Solar and wind power curtailments are rising in California


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CAISO Renewable Curtailments reflect grid balancing under transmission congestion and oversupply, reducing solar and wind output while leveraging WEIM trading, battery storage, and transmission expansion to integrate renewables and stabilize demand-supply.

 

Key Points

CAISO renewable curtailments are reductions in wind and solar output to balance grid amid congestion or oversupply.

✅ Driven mainly by transmission congestion, less by oversupply.

✅ Peaks in spring when demand is low and solar output is high.

✅ Mitigated by WEIM trades, new lines, and battery storage growth.

 

The California Independent System Operator (CAISO), the grid operator for most of the state, is increasingly curtailing solar- and wind-powered electricity generation, as reported in rising curtailments, as it balances supply and demand during the rapid growth of wind and solar power in California.

Grid operators must balance supply and demand to maintain a stable electric system as advances in solar and wind continue to scale. The output of wind and solar generators are reduced either through price signals or rarely, through an order to reduce output, during periods of:

Congestion, when power lines don’t have enough capacity to deliver available energy
Oversupply, when generation exceeds customer electricity demand

In CAISO, curtailment is largely a result of congestion. Congestion-related curtailments have increased significantly since 2019 because California's solar boom has been outpacing upgrades in transmission capacity.

In 2022, CAISO curtailed 2.4 million megawatthours (MWh) of utility-scale wind and solar output, a 63% increase from the amount of electricity curtailed in 2021. As of September, CAISO has curtailed more than 2.3 million MWh of wind and solar output so far this year, even as the US project pipeline is dominated by wind, solar, and batteries.

Solar accounts for almost all of the energy curtailed in CAISO—95% in 2022 and 94% in the first seven months of 2023. CAISO tends to curtail the most solar in the spring when electricity demand is relatively low (because moderate spring temperatures mean less demand for space heating or air conditioning) and solar output is relatively high, although wildfire smoke impacts can reduce available generation during fire season as well.

CAISO has increasingly curtailed renewable generation as renewable capacity has grown in California, and the state has even experienced a near-100% renewables moment on the grid in recent years. In 2014, a combined 9.0 gigawatts (GW) of wind and solar capacity had been built in California. As of July 2023, that number had grown to 17.6 GW. Developers plan to add another 3.0 GW by the end of 2024.

CAISO is exploring and implementing various solutions to its increasing curtailment of renewables, including:

The Western Energy Imbalance Market (WEIM) is a real-time market that allows participants outside of CAISO to buy and sell energy to balance demand and supply. In 2022, more than 10% of total possible curtailments were avoided by trading within the WEIM. A day ahead market is expected to be operational in Spring 2025.

CAISO is expanding transmission capacity to reduce congestion. CAISO’s 2022–23 Transmission Planning Process includes 45 transmission projects to accommodate load growth and a larger share of generation from renewable energy sources.

CAISO is promoting the development of flexible resources that can quickly respond to sudden increases and decreases in demand such as battery storage technologies that are rapidly becoming more affordable. California has 4.9 GW of battery storage, and developers plan to add another 7.6 GW by the end of 2024, according to our survey of recent and planned capacity changes. Renewable generators can charge these batteries with electricity that would otherwise have been curtailed.

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N.W.T. will encourage more residents to drive electric vehicles

Northwest Territories EV Charging Corridor aims to link the Alberta boundary to Yellowknife with Level 3 fast chargers and Level 2 stations, boosting electric vehicle adoption in cold climates, cutting GHG emissions, supporting zero-emission targets.

 

Key Points

A planned corridor of Level 3 and Level 2 chargers linking Alberta and Yellowknife to boost EV uptake and cut GHGs.

✅ Level 3 fast charger funded for Behchoko by spring 2024.

✅ Up to 72 Level 2 chargers funded across N.W.T. communities.

✅ Supports Canada ZEV targets and reduces fuel use and CO2e.

 

Electric vehicles are a rare sight in Canada's North, with challenges such as frigid winter temperatures and limited infrastructure across remote regions.

The Northwest Territories is hoping to change that.

The territorial government plans to develop a vehicle-charging corridor between the Alberta boundary and Yellowknife to encourage more residents to buy electric vehicles to reduce their carbon footprint.

"There will soon be a time in which not having electric charging stations along the highway will be equivalent to not having gas stations," said Robert Sexton, director of energy with the territory’s Department of Infrastructure.

"Even though it does seem right now that there’s limited uptake of electric vehicles and some of the barriers seem sort of insurmountable, we have to plan to start doing this, because in five years' time, it’ll be too late."

The federal government has committed to a mandatory 100 per cent zero-emission vehicle sales target by 2035 for all new light-duty vehicles, though in Manitoba reaching EV targets is not smooth so progress may vary. It has set interim targets for at least 20 per cent of sales by 2026 and 60 per cent by 2030.

A study commissioned by the N.W.T. government forecasts electric vehicles could account for 2.9 to 11.3 per cent of all annual car and small truck sales in the territory in 2030.

The study estimates the planned charging corridor, alongside electric vehicle purchasing incentives, could reduce greenhouse gas emissions by between 260 and 1,016 tonnes of carbon dioxide equivalent in that year.

Sexton said it will likely take a few years before the charging corridor is complete. As a start, the territory recently awarded up to $480,000 to the Northwest Territories Power Corporation to install a Level 3 electric vehicle charger in Behchoko.

The N.W.T. government projects the charging station will reduce gasoline use by 61,000 litres and decrease carbon dioxide equivalent by up to 140 tonnes per year. It is scheduled to be complete by the spring of 2024.

The federal government earlier this month announced $414,000, along with $56,000 in territorial funding, to install up to 72 primarily Level 2 electric vehicle charges in public places, streets, multi-unit residential buildings, workplaces, and facilities with light-duty vehicle fleets in the N.W.T. by March 2024, while in New Brunswick new fast-charging stations are planned on the Trans-Canada.

In Yukon, the territory has pledged to develop electric vehicle infrastructure in all road-accessible communities by 2027. It has already installed 12 electric vehicle chargers with seven more planned, and in N.L. a fast-charging network signals early progress as well.

Just a few people in the N.W.T. currently own electric vehicles, and in Atlantic Canada EV adoption lags as well.

Patricia and Ken Wray in Hay River have owned a Tesla Model 3 for three years. Comparing added electricity costs with savings on gasoline, Patricia estimates they spend 60 per cent less to keep the Tesla running compared to a gas-powered vehicle.

“I don’t mind driving past the gas station,” she said.

Despite some initial hesitation about how the car would perform in the winter, Wray said she hasn’t had any issues with her Tesla when it’s -40 C, although it does take longer to charge. She added it “really hugs the road” in snowy and icy conditions.

“People in the North need to understand these cars are marvellous in the winter,” she said.

Wray said while she and her husband drive their Tesla regularly, it’s not feasible to drive long distances across the territory. As the number of electric vehicle charge stations increases across the N.W.T., however, that could change.

“I’m just very, very happy to hear that charging infrastructure is now starting to be put in place," she said.

Andrew Robinson with the YK Care Share Co-op is more skeptical about the potential success of a long-distance charging corridor. He said while government support for electric vehicles is positive, he believes there's a more immediate need to focus on uptake within N.W.T. communities. He pointed to local taxi services as an example.

"It’s a long stretch," he said of the drive from Alberta, where EVs are a hot topic, to Yellowknife. "It’s 17 hours of hardcore driving and when you throw in having to recharge, anything that makes that longer, people are not going to be really into that.”

The car sharing service, which has a 2016 Chevy Spark dubbed “Sparky,” states on its website that a Level 2 charger can usually recharge a vehicle within six to eight hours while a Level 3 charger takes approximately half an hour, as faster charging options roll out in B.C. and beyond.

 

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Peer-to-peer energy breakthrough could allow solar and wind energy sources to be shared

Microgrid solar outage algorithms optimize renewable energy during blackouts using grid-forming inverters, islanding control, demand forecasting, and energy storage from batteries and EVs, improving reliability by up to 35% for resilient power sharing.

 

Key Points

Algorithms that island homes, forecast demand, and prioritize critical loads using storage and grid-forming inverters.

✅ Disconnects inverters to form resilient neighborhood microgrids

✅ Forecasts solar, wind, and demand; allocates energy fairly

✅ Uses EVs and batteries; boosts reliability by up to 35%

 

Some people who have solar panels on their roof are under the impression that they can use them to power their home in the case of an outage, but that simply is not the case. Homes do remain connected to the grid during outages, as U.S. power outage risks grow, but the devices tasked with managing solar panels are normally turned off due to safety concerns. This permanent grid connection essentially prevents homeowners from drawing on the power that their own renewable energy resources generate.

This could be about to change, however, thanks to the efforts of a team of University of California San Diego engineers who have come up with algorithms that would enable homes to share and use their power in outages by disconnecting solar inverters from the grid. Their algorithms work with the existing technology and would have the added benefit of boosting the system’s reliability by as much as 35 percent.

The genius of their work lies in the ability of the algorithm to prioritize the distribution of power from the renewable resources in outages. Their equation considers forecasts for wind and solar power generation to address clean energy intermittency challenges and the available energy storage, including batteries and electric vehicles. It combines this information with the projected energy usage of residents and the amount of energy the homes are able to produce. It can be programmed to prioritize in several different ways, the most vital of which is by favoring those who need power urgently, such as those using life support equipment. It could also prioritize those who are willing to pay extra or reward those who typically generate an energy surplus during normal operations.

 

Learning lessons from past outages

Lead author Abdulelah H. Habib said the engineers were inspired to find a way to use the renewable power in outages by the events of Hurricane Sandy. This storm affected more than eight million people on the nation’s East Coast, some of whom were left without power for as long as two weeks.

According to the researchers, most customers prefer sharing community-scale storage systems over having systems in each home because of the lower costs. One of the paper’s senior authors, Raymond de Callafon, said that homes that are connected together are not only more resilient in power outages but they also happen to be more resilient to price fluctuations.

Each home needs to be equipped with special circuit breakers that can be remotely controlled, while utilities would need to install some communications methods so the power systems within a particular residential cluster can communicate amongst themselves. They also need a “grid forming inverter” to help them connect to one another and manage excess solar on networks safely.

One stumbling block that will have to be overcome is the current regulations. Most states do not allow individual homeowners to sell power to other homeowners, so there would have to be some adjustments to make this a reality.

 

Solar power growing in popularity

Solar power’s popularity is currently on the rise, and reductions in cost as the technology improves are only expected to drive this growth even further. REC CEO Steve O’Neil told CNBC that the installation rates of solar double every two years, a trend that informs residential solar economics for homeowners even though just two percent of the planet’s electricity comes from converting sunlight to energy. This means there is plenty of room for expansion. The world’s current solar capacity is 305 gigawatts, compared to just 50 gigawatts in 2010.

In addition, he pointed out that the price of solar energy has dropped by 70 percent since the year 2010 and continues to fall; it costs around eight cents per kilowatt hour at the moment. Another factor that could boost adoption is storage improvements, driven by affordable solar batteries that expand capacity, which will allow solar energy to be used even on overcast days.

 

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Solar produced 4.7% of U.S. electricity in 2022, generation up 25%

US Solar Electricity Generation 2022 rose to a 4.7% share, with 202,256 GWh, per EIA Electric Power Monthly; driven by PV capacity additions despite import constraints, alongside renewables trends in wind, nuclear, and hydroelectric output.

 

Key Points

The share and output of US solar PV in 2022: 4.7% of electricity and 202,256 GWh, as reported by the EIA.

✅ Solar PV reached 4.7% of US power; 202,256 GWh generated in 2022.

✅ Monthly share varied from about 3% in Jan to just over 6% in Apr.

✅ Wind was 10.1%; wind+solar hit slightly over 20% in April.

 

In 2022, solar photovoltaics made up 4.7% of U.S. electricity generation, an increase of almost 21% over the 2021 total when solar produced 3.9% of US electricity and about 3% in 2020 according to long-term outlooks. Total solar generation was up 25%, breaking through 200,000 GWh for the year.

The record deployment volumes of 2020 when renewables became the second-most U.S. electricity source and 2021 are the main factors behind this increase. If it were not for ongoing solar panel import difficulties and general inflation, solar’s contribution to electricity generation might have reached 5% in 2022. The data was released by the Department of Energy’s Energy Information Administration (EIA) in their Electric Power Monthly. This release includes data from December 2022, as well as the rest of the data from 2022.

Solar as a percentage of monthly electricity generation ranged from a low of almost 3% in January, to just over 6% in April. April’s production marked a new monthly record for solar generation in the US and coincided with a renewables share record that month.

Total generation of solar electricity peaked in July, at 21,708 GWh. Over the course of the year, solar production reached  202,256 GWh, and total U.S. electricity generation reached 4,303,980 GWh, a year in which renewables surpassed coal in the power mix overall. Total US electricity generation increased by 3.5% over the 4,157,467 GWh produced in 2021.

In 2022, wind energy contributed 10.1% of the total electricity generated in the United States. Wind and solar together produced 14.8% of U.S. electricity in 2022, growing from the 13% recorded in 2021. In April, when solar power peaked at just over 6%, wind and solar power together reached a peak of slightly over 20%, as a wind-and-solar milestone versus nuclear was noted that month, a new monthly record for the two energy sources.

In total, emissions free energy sources such as wind, solar photovoltaic and thermal, nuclear, hydroelectric, and geothermal, accounted for 37.9% of the total electricity generated in the U.S., while renewables provided about 25.5% share of the mix during the year. This value is barely higher than 2020’s 37.7% – but represents a return to growth after 2021 saw a decrease in emission free electricity to 37%.

Nuclear power was the most significant contributor to emission free electricity, making up a bit more than 45% of the total emissions free electricity. Wind energy ranked second at 26%, followed by hydroelectricity at 15%, and solar photovoltaic at 12%, confirming solar as the #3 renewable in the U.S. mix.

Emissions free electricity is a different summation than the EIA’s ‘Renewable Energy’ category. The Renewable Energy category also includes:

  • Wood and Wood-Derived Fuels
  • Landfill Gas
  • Biogenic Municipal Solid Waste
  • Other Waste Biomass

Nuclear produced 17.9% of the total U.S. electricity, a value that has generally stayed flat over the years. However, since nuclear facilities are being retired faster than new facilities are coming online, nuclear production has fallen in the past two years. After multiple long delays, we will probably see reactor three of the Vogtle nuclear facility come online in 2023. Reactor four is officially scheduled to come online later this year.

Hydroelectric production also declined in 2022, due to drought conditions in the southwestern United States. With rain and snow storms in California and the southwest, hydroelectricity generation may rebound in 2023.

 

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Germany to Exempt Electric Cars from Vehicle Tax Until 2035

Germany is extending its vehicle tax exemption for electric cars until 2035, a federal move aimed at boosting EV sales, supporting the auto industry, and advancing the country’s transition to cleaner, more sustainable transportation.

 

Why is Germany Exempting EVs from Vehicle Tax Until 2035?

Germany is exempting electric vehicles from vehicle tax until 2035 to boost EV adoption, support its auto industry, and meet national climate targets.

✅ Encourages consumers to buy zero-emission cars

✅ Protects jobs in the automotive sector

✅ Advances Germany’s clean energy transition

Germany’s federal government has confirmed plans to extend the country’s vehicle tax exemption for electric cars until 2035, as part of a renewed push to accelerate the nation’s e-mobility transition and support its struggling automotive industry. The move, announced by Finance Minister Lars Klingbeil, comes just weeks before the existing exemption was set to expire.

“In order to get many more electric cars on the road in the coming years, we need to provide the right incentives now,” Klingbeil told the German Press Agency (DPA). “That is why we will continue to exempt electric cars from vehicle tax.”

Under the proposed law, the exemption will apply to new fully electric vehicles registered until December 31, 2030, with benefits lasting until the end of 2035. According to the Finance Ministry, the measure aims to “provide an incentive for the early purchase of a purely electric vehicle.” While popular among consumers and automakers, the plan is expected to cost the federal budget several hundred million euros in lost revenue.

Without the extension, the tax relief for new battery-electric vehicles (BEVs) would have ended on January 1, 2026, creating uncertainty for automakers and potential buyers. The urgency to pass the new legislation reflects the government’s goal to maintain Germany’s momentum toward electrification, even as the age of electric cars accelerates amid economic headwinds and fierce international competition.

The exemption’s renewal was originally included in the coalition agreement between the Christian Democratic Union (CDU), the Christian Social Union (CSU), and the Social Democratic Party (SPD). It follows two other measures from the government’s “investment booster” package—raising the maximum gross price for EV tax incentives to €100,000 and allowing special depreciation for electric vehicles. However, the vehicle tax measure was previously in jeopardy due to Germany’s tight fiscal situation. The Finance Ministry had cautioned that every proposal in the coalition deal was “subject to financing,” and a plan to end EV subsidies led to speculation that the EV tax break could be dropped altogether.

Klingbeil’s announcement coincides with an upcoming “automotive dialogue” summit at the Chancellery, hosted by Chancellor Friedrich Merz. The meeting will bring together representatives from federal ministries, regional governments, automakers advancing initiatives such as Daimler’s electrification plan across their portfolios, and trade unions to address both domestic and international challenges facing Germany’s car industry. Topics will include slowing EV sales growth in China, the ongoing tariff dispute with the United States, where EPA emissions rules are expected to boost EV sales, and strategies for strengthening Germany’s global competitiveness.

“We must now put together a strong package to lead the German automotive industry into the future and secure jobs,” Klingbeil said. “We want the best cars to continue to be built in Germany. Everyone knows that the future is electric.”

The government is also expected to revisit a proposed program to help low- and middle-income households access electric cars, addressing affordability concerns that persist across markets, modelled on France’s “social leasing” initiative. Though included in the coalition agreement, progress on that program has stalled, and few details have emerged since its announcement.

Germany’s latest tax policy move signals renewed confidence in its electric vehicle transition, despite budget constraints and a turbulent global market, as the 10-year EV outlook points to most cars being electric worldwide. Extending the exemption until 2035 sends a clear message to consumers and manufacturers alike: the country remains committed to building its clean transport future—one electric car at a time.

 

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Renewable Electricity Is Coming on Strong

Cascadia electrification accelerates renewable energy with wind and solar, EVs, heat pumps, and grid upgrades across British Columbia, Washington, and Oregon to decarbonize power, buildings, and transport at lower cost while creating jobs.

 

Key Points

Cascadia electrification is the shift to renewable grids, EVs, and heat pumps replacing fossil fuels.

✅ Wind and solar scale fast; gas and coal phase down

✅ EVs and heat pumps cut fuel costs and emissions

✅ Requires grid upgrades, policy, and social acceptance

 

Fifty years ago, a gasoline company’s TV ads showed an aging wooden windmill. As the wind died, it slowed to stillness. The ad asked: “But what do you do when the wind stops?” For the next several decades, fossil fuel providers and big utilities continued to denigrate renewable energy. Even the U.S. Energy Department deemed renewables “too rare, too diffuse, too distant, too uncertain and too ill-timed” to meaningfully contribute, as a top agency analyst put it in 2005.

Today we know that’s not true, especially in British Columbia, Washington and Oregon.

New research shows we could be collectively poised to pioneer a climate-friendly energy future for the globe — that renewable electricity can not only move Cascadia off of fossil fuels, but do so at an affordable price while creating some jobs along the way.

After decades of disinformation, this may sound like a wishful vision. But building a cleaner and more equitable economy — and doing so in just a few decades to head off the worst effects of climate change — is backed by a growing body of regional and international research.

Getting off fossil fuels is “feasible, necessary… and not very expensive” when compared to the earnings of the overall economy, said Jeffrey Sachs, an economist and global development expert at Columbia University.

Much of the confidence about the price tag comes down to this: Innovation and mass production have made wind and solar power installations cheaper than most fossil-fuelled power plants and today’s fastest-growing source of energy worldwide. The key to moving Cascadia’s economies away from fossil fuels, according to the latest research, is building more, prompting power companies to invest in carbon-free electricity as our go-to “fuel.”

However, doing that in time to help head off a cascading climatic crisis by mid-century means the region must take major steps in the next decade to speed the transition, researchers say. And that will require social buy-in.

The new research highlights three mutually supporting strategies that squeeze out fossil fuels:

Chefs and foodies are well-known fans of natural gas. Why, “Cooking with gas” is an expression for a reason. But one trendy Seattle restaurant-bar is getting by just fine with a climate-friendly alternative: electric induction cooktops.

Induction “burners” are just as controllable as gas burners and even faster to heat and cool, but produce less excess heat and zero air pollution. That made a huge difference to chef Stuart Lane’s predecessors when they launched Seattle cocktail bar Artusi 10 years ago.

Using induction meant they could squeeze more tables into the tight space available next door to Cascina Spinasse — their popular Italian restaurant in Seattle’s vibrant Capitol Hill neighborhood — and lowered the cost of expanding.

Rather than igniting a fossil fuel to roast the surface of pots and pans, induction burners generate a magnetic field that heats metal cookware from inside. For people at home, forgoing gas eliminates combustion by-products, which means fewer asthma attacks and other health impacts.

For Artusi, it eliminated the need for a pricey hood and fans to continuously pump fumes and heat out and pull fresh air in. That made induction the cheaper way to go, even though induction cooktops cost more than conventional gas ranges.

Over the years, they’ve expanded the menu because even guests who come for the signature Amari cocktails often stay for the handmade pasta, meatballs and seasonal sauces. So the initial pair of induction burners has multiplied to nine. Yet Artusi retains a cleaner, quieter and more intimate atmosphere. Yet thanks largely to the smaller fans, “it’s not as chaotic,” said Lane.

And Lane adds, it feels good to be cooking on electricity — which in Seattle proper is about 90 per cent renewable — rather than on a fossil fuel that produces climate-warming greenhouse gases. “You feel like you’re doing something right,” he said.

Lane says he wouldn’t be surprised if induction is the new normal for chefs entering the trade 10 years from now. “They probably would cook with gas and say, ‘Damn it’s hot in here!’” — Peter Fairley

This story is supported in part by a grant from the Fund for Investigative Journalism.

increasing energy efficiency to trim the amount of power we need,

boosting renewable energy to make it possible to turn off climate-wrecking fossil-fuel plants, and

plugging as much stuff as possible into the electrical grid.
Recent studies in B.C. and Washington state, and underway for Oregon, point to efficiency and electrification as the most cost-effective route to slashing emissions while maintaining lifestyles and maximizing jobs. A recent National Academies of Science study reached the same conclusion, calling electrification the core strategy for an equitable and economically advantageous energy transition, while abroad New Zealand's electrification push is asking whether electricity can replace fossil fuels in time.

However, technologies don’t emerge in a vacuum. The social and economic adjustments required by the wholesale shift from fossil fuels that belch climate-warming carbon emissions to renewable power can still make or break decarbonization, according to Jim Williams, a University of San Francisco energy expert whose simulation software tools have guided many national and regional energy plans, including two new U.S.-wide studies, a December 2020 analysis for Washington state and another in process for Oregon.

Williams points to vital actions that are liable to rile up those who lose money in the deal. Steps like letting trees grow many decades older before they are cut down, so they can suck up more carbon dioxide — which means forgoing quicker profits from selling timber. Or convincing rural communities and conservationists that they should accept power-transmission lines crossing farms and forests.

“It’s those kinds of policy questions and social acceptance questions that are the big challenges,” said Williams.

Washington, Oregon and B.C. already mandate growing supplies of renewable power and help cover the added cost of some electric equipment, and across the border efforts at cleaning up Canada's electricity are critical to meeting climate pledges. These include battery-powered cars, SUVs and pickups on the road. Heat pumps — air conditioners that run in reverse to push heat into a building — can replace furnaces. And, at industrial sites, electric machines can take the place of older mechanical systems, cutting costs and boosting reliability.

As these options drop in price they are weakening reliance on fossil fuels — even among professional chefs who’ve long sworn by cooking with gas (see sidebar: Cooking quick, clean and carbon-free).

“For each of the things that we enjoy and we need, there’s a pathway to do that without producing any greenhouse gas emissions,” said Jotham Peters, managing partner for Vancouver-based energy analysis firm Navius Research, whose clients include the B.C. government.


What the modelling tells us

Key to decarbonization planning for Cascadia are computer simulations of future conditions known as models. These projections take electrification and other options and run with them. Researchers run dozens of simulated potential future energy scenarios for a given region, tinkering with different variables: How much will energy demand grow? What happens if we can get 80 per cent of people into electric cars? What if it’s only 50 per cent? And so on.

Accelerating the transition requires large investments, this modelling shows. Plugging in millions of vehicles and heat pumps demands both brawnier and more flexible power systems, including more power lines and other infrastructure such as bridging the Alberta-B.C. electricity gap that communities often oppose. That demands both stronger policies and public acceptance. It means training and apprenticeships for the trades that must retrofit homes, and ensuring that all communities benefit — especially those disproportionately suffering from energy-related pollution in the fossil fuel era.

Consensus is imperative, but the new studies are bound to spark controversy. Because, while affordable, decarbonization is not free.

The Meikle Wind Project in BC’s Peace River region, the province’s largest, with 61 turbines producing 184.6 MW of electricity, went online in 2017. Photo: Pattern Development.
Projections for British Columbia and Washington suggest that decarbonizing Cascadia will spur extra job-stimulating growth. But the benefits and relatively low net cost mask a large swing in spending that will create winners and losers, and without policies to protect disadvantaged communities from potential energy cost increases, could leave some behind.

By 2030, the path to decarbonization shows Washingtonians buying about $5 billion less worth of natural gas, coal and petroleum products, while putting even more dollars toward cleaner vehicles and homes. No surprise then that oil and gas interests are attacking the new research.

And the research shows a likely economic speed bump around 2030. Economic growth would slow due to increased energy costs as economies race to make a sharp turn toward pollution reductions after nearly a decade of rising greenhouse gas emissions.

“Meeting that 2030 target is tough and I think it took everybody a little bit by surprise,” said Nancy Hirsh, executive director of the Seattle-based NW Energy Coalition, and co-chair of a state panel that shaped Washington’s recent energy supply planning.

But that’s not cause to ease up. Wait longer, says Hirsh, and the price will only rise.


Charging up

What most drives Cascadia’s energy models toward electrification is the dropping cost of renewable electricity.

Take solar energy. In 2010, no large power system in the world got more than three per cent of its electricity from solar. But over the past decade, solar energy’s cost fell more than 80 per cent, and by last year it was delivering over nine per cent of Germany’s electricity and over 19 per cent of California’s.

Government mandates and incentives helped get the trend started, and Canada's electricity progress underscores how costs continue to fall. Once prohibitively expensive, solar’s price now beats nuclear, coal and gas-fired power, and it’s expected to keep getting cheaper. The same goes for wind power, whose jumbo jet-sized composite blades bear no resemblance to the rickety machines once mocked by Big Oil.

In contrast, cleaning up gas- or coal-fired power plants by equipping them to capture their carbon pollution remains expensive even after decades of research and development and government incentives. Cost overruns and mechanical failures recently shuttered the world’s largest “low-carbon” coal-fired power plant in Texas after less than four years of operation.

Retrofits enabled this coal-fired plant in Texas to capture some of its carbon dioxide pollution, which was then injected into aging oil wells to revive production. But problems made the plant’s coal-fired power — which is being priced out by renewable energy — even less competitive and it was shut down after three years in 2020. Photo by NRG Energy.
Innovation and incentives are also making equipment that plugs into the grid cheaper. Electric options are good and getting better with a push from governments and a self-reinforcing cycle of performance improvement, mass production and increased demand.

Battery advances and cost cuts over the past decade have made owning an electric car cheaper, fuel included, than conventional cars. Electric heat pumps may be the next electric wave. They’re three to four times more efficient than electric baseboard heaters, save money over natural gas in most new homes, and work in Cascadia’s coldest zones.

Merran Smith, executive director of the Vancouver-based non-profit Clean Energy Canada, says that — as with electric cars five years ago — people don’t realize how much heat pumps have improved. “Heat pumps used to be big huge noisy things,” said Smith. “Now they’re a fraction of the size, they’re quiet and efficient.”

Electrifying certain industrial processes can also cut greenhouse gases at low cost. Surprisingly, even oil and gas drilling rigs and pipeline compressors can be converted to electric. Provincial utility BC Hydro is building new transmission lines to meet anticipated power demand from electrification of the fracking fields in northeastern British Columbia that supply much of Cascadia’s natural gas.


Simulating low-carbon living

The computer simulation tools guiding energy and climate strategies, unlike previous models that looked at individual sectors, take an economy-wide view. Planners can repeatedly run scenarios through sophisticated software, tinkering with their assumptions each time to answer cross-cutting questions such as: Should the limited supply of waste wood from forestry that can be sustainably removed from forests be burned in power plants? Or is it more valuable converted to biofuel for airplanes that can’t plug into the grid?

Evolved Energy Research, a San Francisco-based firm, analyzed the situation in Washington. Its algorithms are tuned using data about energy production and use today — down to the number and types of furnaces, stovetops or vehicles. It has expert assessments of future costs for equipment and fuels. And it knows the state’s mandated emissions targets.

Researchers run the model myriad times, simulating decisions about equipment and fuel purchases — such as whether restaurants stick with gas or switch to electric induction “burners” as their gas stoves wear out. The model finds the most cost-effective choices by homes and businesses that meet the state’s climate goals.

For Seattle wine bar Artusi, going with electric induction cooktops meant they could squeeze more tables into a tight, comfortable space. Standard burners cost less but would have required noisy, pricey fume hoods and fans to suck out the pollutants. For more, see sidebar. Photo: InvestigateWest.
Rather than accepting that optimal scenario and calling it a day, modellers account for uncertainty in their estimates of future costs by throwing in various additional constraints and rerunning the model.

That probing shows that longer reliance on climate-warming natural gas and petroleum fuels increases costs. In fact, all of the climate-protecting scenarios achieve Washington’s goals at relatively low cost, compared to the state’s historic spending on energy.

The end result of these scenarios are net-zero carbon emissions in 2050, echoing Canada's race to net-zero and the growing role of renewable energy, in which a small amount of emissions remaining are offset by rebounding forests or equipment that scrubs CO2 from the air.

But the seeds of that transformation must be sown by 2030. The scenarios identify common strategies that the state can pursue with low risk of future regrets.

One no brainer is to rapidly add wind and solar power to wring out CO2 emissions from Washington’s power sector. The projections end coal-fired power by 2025, as required by law, but also show that, with grid upgrades, gas-fired power plants that produce greenhouse gas emissions can stay turned off most of the time. That delivers about 16.2 million of the 44.8 million metric tons of CO2 emissions cut required by 2030 under state law.

All of the Washington scenarios also jack up electricity consumption to power cars and heating. By 2050, Washington homes and businesses would draw more than twice as much power from the grid as they did last year, meaning climate-friendly electricity is displacing climate-unfriendly gasoline, diesel fuel and natural gas. In the optimal case, electricity meets 98 per cent of transport energy in 2050, and over 80 per cent of building energy use.

By 2050, the high-electrification scenarios would create over 60,000 extra jobs across the state, as replacing old and inefficient equipment and construction of renewable power plants stimulates economic growth, according to projections from Washington, D.C.-based FTI Consulting. Scenarios with less electrification require more low-carbon fuels that cut emissions at higher cost, and thus create 15,000 to 35,000 fewer jobs.

Much of the new employment comes in middle-class positions — including about half of the total in construction — leading to big boosts in employment income. Washingtonians earn over $7 billion more in 2050 under the high-electrification scenarios, compared to a little over $5 billion if buildings stick with gas heating through 2050 and less than $2 billion with extra transportation fuels.


Rocketing to 2030

Evolved Energy’s electrification-heavy decarbonization pathways for Washington dovetail with a growing body of international research, such as that National Academy of Sciences report and a major U.S. decarbonization study led by Princeton University, and in Canada debates like Elizabeth May's 2030 renewable grid goal are testing feasibility. (See Grist’s 100 per cent Clean Energy video for a popularized view of similar pathways to slash U.S. carbon emissions, informed by Princeton modeller Jesse Jenkins.)

 

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3 ways to tap billions in new money to go green - starting this month

Inflation Reduction Act Energy Credits help households electrify with tax credits and rebates for heat pumps, EVs, rooftop solar, battery storage, and efficiency upgrades, cutting utility bills, reducing carbon emissions, and accelerating home electrification nationwide.

 

Key Points

Federal incentives offering tax credits and rebates for heat pumps, EVs, solar, and efficiency to cut emissions.

✅ 30% rooftop solar and storage credit; $2,000 annual cap for heat pumps

✅ Up to $7,500 EV tax credit; price, income, and assembly rules apply

✅ Low-income rebates and discounts available via states starting mid-2023

 

Earlier this year, Congress passed the biggest climate bill in history — cloaked under the name the “Inflation Reduction Act,” a historic climate deal by any measure.

Starting in the new year, the bill will offer households thousands of dollars to transition over from fossil-fuel burning heaters, stoves and cars to cleaner versions as renewable electricity accelerates. On Jan. 1, middle-income households will be able to access over a half-dozen tax credits for electric stoves, cars, rooftop solar and more. And starting sometime in mid-2023, lower-income households will be able to get upfront discounts on some of those same appliances — without having to wait to file their taxes to get the cash back. This handy online tool shows what you might be eligible for, depending on your Zip code and income.

But which credits should Americans focus on — and which are best for the climate? Here’s a guide to the top climate-friendly benefits of the Inflation Reduction Act, and how to access them.


Heat pumps — the best choice for decarbonizing at home

Tax credit available on Jan. 1: 30 percent of the cost, up to $2,000

Income limit: None

Ah, heat pumps — one of the most popular technologies of the transition to clean energy and to net-zero electricity systems. “Heat pump” is a bit of a misnomer for these machines, which are more like super-efficient combo air conditioning and heating systems. These appliances run on electricity and move heat, instead of creating it, and so can be three to five times more efficient than traditional gas or electrical resistance heaters.

“For a lot of people, a heat pump is going to be their biggest personal impact,” said Sage Briscoe, the federal senior policy manager at Rewiring America, a clean-energy think tank. (Heat pumps have become so iconic that Rewiring America even has a heat pump mascot.)

Heat pumps can have enormous cost and carbon savings. According to one analysis using data from the National Renewable Energy Laboratory, switching to a heat pump can save homeowners anywhere from $100 to $1,200 per year on heating bills and prevent anywhere from 1 to 8 metric tons of carbon dioxide emissions per year. For comparison, going vegan for an entire year saves about 1 metric ton of CO2 emissions.

But many consumers encounter obstacles when switching over to heat pumps. In some areas, it can be difficult to find a contractor trained and willing to install them; some homeowners report that contractors share misinformation about heat pumps, including that they don’t work in cold climates. (Modern heat pumps do work in cold climates, and can heat a home even when outdoor temperatures are down to minus-31 degrees Fahrenheit.) Briscoe recommends that homeowners look for skilled contractors who know about heat pumps and do advance research to figure out which models might work best for their home.


Electric vehicles — top choice for cutting car emissions

Tax credit available on Jan. 1: Up to $7,500 depending on the make and model of the car

Income limit: <$150,000 for single filers; <$300,000 for joint filers

If you are like the millions of Americans who don’t live in a community with ample public transit, the best way to decarbonize your transport, as New Zealand's electricity transition shows, is switching to an electric car. But electric cars can be prohibitively expensive for many Americans.

Starting Jan. 1, a new EV tax credit will offer consumers up to $7,500 off the purchase of an electric vehicle. For the first few months, Americans will get somewhere between $3,751 and $7,500 off their purchase of an EV, depending on the size of the battery in the car.

There are limitations, per the new law. The vehicles will also have to be assembled in North America, where Canada's electricity progress is notable, and cars that cost more than $55,000 aren’t eligible, nor are vans or trucks that cost more than $80,000. This week, the Internal Revenue Service provided a list of vehicles that are expected to meet the criteria starting Jan. 1.

Beginning about March, however, that $7,500 credit will be split into two parts: Consumers can get a $3,750 credit if the vehicle has a battery containing at least 40 percent critical minerals from the United States (or a country that the United States has a free-trade agreement with) and another $3,750 credit if at least 50 percent of the battery’s components were assembled and manufactured in North America. Those rules haven’t been finalized yet, so the tax credit starting on Jan. 1 is a stopgap measure until the White House has ironed out the final version.

Joe Britton, the executive director of the EV industry group Zeta, said that means there will likely be a wider group of vehicles eligible for the full tax credit in January and February than there will be later in 2023. Because of this, he recommended that potential EV owners act fast in 2023.

“I would be buying a car in the first quarter,” he said.


Rooftop solar — the best choice for generating clean energy

Tax credit available now: 30 percent of the cost of installation, no cap

Income limit: None

For those who want to generate their own clean energy, there is always rooftop solar panels. This tax credit has actually been available since the Inflation Reduction Act was signed into law in August 2022. It offers a tax credit equal to 30 percent of the cost of installing rooftop solar, with no cap. According to Rewiring America, the average 6 kilowatt solar installation costs about $19,000, making the average solar tax credit about $5,700. (The Inflation Reduction Act also includes a 30 percent tax credit for homeowners that need to upgrade their electricity panel for rooftop solar, and a 30 percent tax credit for installing battery storage to support the shift toward carbon-free electricity solutions.)

Solar panels can save homeowners tens of thousands of dollars in utility bills as extreme heat boosts electricity bills and, when combined with battery storage, can also provide a power backup in the case of a blackout or other disaster. For someone trying to move their entire home away from fossil fuels, solar panels become even more enticing: Switch everything over to electricity, and then make the electricity super cheap with the help from the sun.

For people who don’t own their own homes, there are other options as well. Renters can subscribe to a community solar project to lower their electricity bills and get indirect benefits from the tax credits.


Tips, tricks and words of caution
There are many other credits also coming out in 2023: for EV chargers (up to $1,000), a boon for expanding carbon-free electricity across the grid, heat pump water heaters (up to $2,000), and even cash for sealing up the doors and windows of your home (up to $1,200).

The most important thing to know, Briscoe said, is whether you qualify for the upfront discounts for low- and moderate-income Americans — which won’t be available until later in 2023 — or the tax credits, which will be available Jan. 1. (Try this tool.) If going the tax credit route, it’s better to spread the upgrades out across multiple years, since there is an annual limit on how many of the credits you can claim in a given year. And, she warned, it is not always going to be easy: It can be hard to find the right installers and the right information for how to make use of all the available government resources.

 

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