Duke Energy Renewables acquires three California solar projects from SunPower

CAISO Net Negative Emissions signal moments when greenhouse gas intensity of serving ISO demand drops below zero, driven by high renewable generation, low load, strong solar exports, and imports accounting in the California grid.

Key Points

Moments when CAISO's CO2 to serve demand is below zero, driven by renewables, exports, and import accounting.

✅ Calculated using imports and exports to serve ISO demand

✅ Occur during high solar output, low weekend load

✅ Coincide with curtailment and record renewable penetration

We’re a long way from the land of milk and honey, but on Easter Sunday – for about an hour – we got a taste.

On Sunday, at 1:55 PM Pacific Time the California Independent Systems Operator (CAISO) reported that greenhouse gas emissions necessary to serve its demand (~80% of California’s electricity demand on an annual basis), was measured at a rate -16 metric tons of CO2 per hour. Five minutes later, the value was -2 mTCO2/h, before it crept back up to 40 mTCO2/h at 2:05 PM PST. At 2:10 PST though it fell back to -86 mTCO2/h and stayed negative until 3:05 PM PST, even as global CO2 emissions flatlined in 2019 according to the IEA.

This information was brought to the attention of pv magazine via tweet from eagle eye Jon Pa after CAISO’s site first noted the negative values:

The region was still generating CO2 though, as natural gas, biogas, biomass, geothermal and even coal plants were running and pumping out emissions, even as potent greenhouse gases declined in the US under control efforts. CAISO’s Greenhouse Gas Emission Tracking Methodology, December 28, 2016 (pdf) notes the below calculations to create the value what it terms, “Total GHG emissions to serve ISO demand”:

Of importance to note is that to get to the net negative value, CAISO considered all electricity imports and exports, a reminder that climate policy shapes grid operations across North America. And as can be noted in the image below the CO2 intensity of imports during the day rapidly declined as the sun came up, first going negative around 9:05 AM PST, and mostly staying so until just before 6 PM PST.

During this same weekend, other records were noted (reiterating that we’re in record setting season and as the state pursues its 100% carbon-free mandate now in law) such as a new electricity export record of greater than 2 GW and total renewable electricity as part of total demand at greater than 70%.

At the peak negative moment of 2:15 PM PST, -112 mTCO2/h seen below, the total amount of clean instantaneous generation being used in the power grid region was 17 GW, a far cry from heat-driven reliability strains like rolling blackout warnings that arise during extreme demand, with renewables giving 76% of the total, hydro 14%, nuclear 13% and imports of -12% countering the CO2 coming from just over 1.4 GW of gas generation.

Also of importance are a few layers of nuance in the electricity demand charts. First off we’re in the shoulder seasons  of California – nice cool weather before the warmth of summer drives air conditioning demand. Additional the weekend electricity demand is always lower, as well, Easter Sunday might have had an affect, whereas in colder regions Calgary’s electricity use can soar during frigid snaps.

Lastly to note was the amount of electricity from solar and wind generation being curtailed. And while the Sunday numbers weren’t available yet, the below image noted Saturday with 10 GWh in total being curtailed (pdf) – peaking at over 3.2 GW of instantaneous mostly solar power even as solar is now the cheapest electricity according to the IEA, in the hours of 2 and 3 PM PST. On an annualized basis, less than 2% of total potential solar electricity was curtailed in 2018.

Related News

• Electricity Forum News

• Climate Change News

Canada Electricity Grid Decarbonization advances net-zero goals by expanding renewable energy (wind, solar, hydro), boosting grid reliability with battery storage, and aligning policy, efficiency, and investment to cut emissions and strengthen energy security.

Key Points

Canada's shift to low-carbon power using renewables and storage to cut emissions and improve grid reliability.

✅ Invest in wind, solar, hydro, and transmission upgrades

✅ Deploy battery storage to balance intermittent generation

✅ Support just transition, jobs, and energy efficiency

As Canada moves towards a more sustainable future, decarbonizing its electricity grid has emerged as a pivotal goal. The transition aims to reduce greenhouse gas emissions, promote renewable energy sources, and ultimately support global climate targets, with cleaning up Canada's electricity widely viewed as critical to meeting those pledges. However, the implications of this transition are multifaceted, impacting the economy, energy reliability, and the lives of Canadians.

Understanding Decarbonization

Decarbonization refers to the process of reducing carbon emissions produced from various sources, primarily fossil fuels. In Canada, the electricity grid is heavily reliant on natural gas, coal, and oil, which contribute significantly to carbon emissions. The Canadian government has committed to achieving net-zero by 2050 through federal and provincial collaboration, with the electricity sector playing a crucial role in this initiative. The strategy includes increasing the use of renewable energy sources such as wind, solar, and hydroelectric power.

Economic Considerations

Transitioning to a decarbonized electricity grid presents both challenges and opportunities for Canada’s economy. On one hand, the initial costs of investing in renewable energy infrastructure can be substantial. This includes not only the construction of renewable energy plants but also the necessary upgrades to the grid to accommodate new technologies. According to the Fraser Institute analysis, these investments could lead to increased electricity prices, impacting consumers and businesses alike.

However, the shift to a decarbonized grid can also stimulate economic growth. The renewable energy sector is a rapidly growing industry that, as Canada’s race to net-zero accelerates, promises job creation in manufacturing, installation, and maintenance of renewable technologies. Moreover, as technological advancements reduce the cost of renewable energy, the long-term savings on fuel costs can benefit both consumers and businesses. The challenge lies in balancing these economic factors to ensure a smooth transition.

Reliability and Energy Security

A significant concern regarding the decarbonization of the electricity grid is maintaining reliability and energy security, especially as an IEA report indicates Canada will need substantially more electricity to achieve net-zero goals, requiring careful system planning.

To address this challenge, the implementation of energy storage solutions and grid enhancements will be essential. Advances in battery technology and energy storage systems can help manage supply and demand effectively, ensuring that energy remains available even during periods of low renewable output. Additionally, integrating a diverse mix of energy sources, including hydroelectric power, can enhance the reliability of the grid.

Social Impacts

The decarbonization process also carries significant social implications. Communities that currently depend on fossil fuel industries may face economic challenges as the transition progresses, and the Canadian Gas Association has warned of potential economy-wide costs for switching to electricity, underscoring the need for a just transition.

Furthermore, there is a need for public engagement and education on the benefits and challenges of decarbonization. Canadians must understand how changes in energy policy will affect their daily lives, from electricity prices to job opportunities. Fostering a sense of community involvement can help build support for renewable energy initiatives and ensure that diverse voices are heard in the planning process.

Policy Recommendations

For Canada to successfully decarbonize its electricity grid, and building on recent electricity progress across provinces nationwide, robust and forward-thinking policies must be implemented. This includes investment in research and development to advance renewable technologies and improve energy storage solutions. Additionally, policies should encourage public-private partnerships to share the financial burden of infrastructure investments.

Governments at all levels should also promote energy efficiency measures to reduce overall demand, making the transition more manageable. Incentives for consumers to adopt renewable energy solutions, such as solar panels, can further accelerate the shift towards a decarbonized grid.

Decarbonizing Canada's electricity grid presents a complex yet necessary challenge. While there are economic, reliability, and social considerations to navigate, the potential benefits of a cleaner, more sustainable energy future are substantial. By implementing thoughtful policies and fostering community engagement, Canada can lead the way in creating an electricity grid that not only meets the needs of its citizens but also contributes to global efforts in combating climate change.

Related News

• Electricity Forum News

• Climate Change News

ComEd Hosting Capacity Map helps Illinois communities assess photovoltaic capacity, distributed energy resources, interconnection limits, and grid planning needs, guiding developers and policymakers on siting solar, net metering feasibility, and RPS-aligned deployment by circuit.

Key Points

An online tool showing circuit-level DER capacity, PV limits, and interconnection readiness across ComEd.

✅ Circuit-level estimates of solar hosting capacity

✅ Guides siting, interconnection, and net metering

✅ Supports RPS goals with grid planning insights

As the Illinois solar market grows from the Future Energy Jobs Act, the largest utility in the state has posted a planning tool to identify potential PV capacity in their service territory. ComEd, a Northern Illinois subsidiary of Exelon, has a hosting capacity website for its communities indicating how much photovoltaic capacity can be sited in given areas, based on the existing electrical infrastructure, as utilities pilot virtual power plant programs that leverage distributed resources.

According to ComEd’s description, “Hosting Capacity is an estimate of the amount of DER [distributed energy resources] that may be accommodated under current configurations at the overall circuit level without significant system upgrades to address adverse impacts to power quality or reliability.” This website will enable developers and local decision makers to estimate how much solar could be installed by township, sections and fractions of sections as small as ½ mile by ½ mile and to gauge EV charging impacts with NREL's projection tool for distribution planning. The map sections indicate potential capacity by AC kilowatts with a link to to ComEd’s recently upgraded Interconnection and Net Metering homepage.

The Hosting Map can provide insight into how much solar can be installed in which locations in order to help solar reach a significant portion of the Illinois Renewable Portfolio Standard (RPS) of 25% electricity from renewable sources by 2025, and to plan for transportation electrification as EV charging infrastructure scales across utility territories. For example, the 18 sections of Oak Park Township capacity range from 612 to 909 kW, and total 13,260 kW of photovoltaic power. That could potentially generate around 20 million kWh, and policy actions such as the CPUC-approved PG&E EV program illustrate how electrification initiatives may influence future demand. Oak Park, according to the PlanItGreen Report Card, a joint project of the Oak Park River Forest Community Foundation and Seven Generations Ahead, uses about 325 million kWh.

Based on ComEd’s Hosting Capacity, Oak Park could generate about 6% of its electricity from solar power located within its borders. Going significantly beyond this amount would likely require a combination of upgrades by ComEd’s infrastructure, potentially higher interconnection costs and deployment of technologies like energy storage solutions. What this does indicate is that a densely populated community like Oak Park would most likely have to get the majority of its solar and renewable electricity from outside its boundaries to reach the statewide RPS goal of 25%. The Hosting Capacity Map shows a considerable disparity among communities in ½ mile by ½ mile sections with some able to host only 100-200 kWs to some with capacities of over 3,000 kW.

Related News

• Electricity Forum News

• Renewable Energy News

Vancouver October 2024 Windstorm brought extreme weather to British Columbia, causing power outages, storm damage, and downed lines as BC Hydro crews led emergency response and restoration, highlighting climate change resilience and community preparedness.

Key Points

A severe storm with 100 km/h gusts that caused outages and damage in Vancouver, prompting wide power restoration.

✅ 100 km/h gusts toppled trees and downed power lines

✅ Over 200,000 BC Hydro customers lost electricity

✅ Crews and communities coordinated emergency response

In October 2024, a powerful windstorm swept through the Vancouver area, resulting in widespread power outages and disruption across the region. The storm, characterized by fierce winds and heavy rainfall, reflected conditions seen when strong winds in the Miami Valley knocked out power earlier this year, and was part of a larger weather pattern that affected much of British Columbia. Residents braced for the impacts, with local authorities and utility companies preparing for the worst.

The Storm's Impact

The windstorm hit Vancouver with wind gusts exceeding 100 km/h, toppling trees, and downing power lines. As the storm progressed, reports of damaged properties and fallen trees began to flood in. Many neighborhoods experienced significant power outages, mirroring widespread outages in Quebec earlier in the season, with thousands of residents left without electricity for extended periods. The areas hardest hit included the West End, Kitsilano, and parts of the North Shore, where the impact of the storm was particularly severe.

Utility companies, including BC Hydro operations, mobilized their crews quickly in response to the storm's aftermath. Emergency response teams worked tirelessly to restore power, often facing challenging conditions. The restoration efforts were complicated by the sheer number of outages reported—over 200,000 customers were affected at the height of the storm. Crews encountered not only downed lines but also hazardous conditions as they navigated through debris-laden streets.

Community Response and Resilience

In the wake of the storm, the community showcased remarkable resilience. Local residents rallied together to assist one another, sharing resources and providing support to those most affected. Many community centers opened their doors as emergency shelters, offering warmth and safety to those without power, a step also taken when a London power outage disrupted mornings for thousands across the city.

Authorities also emphasized the importance of preparedness in such situations. They urged residents to have emergency kits ready, including food, water, and essential supplies, noting that nearby areas like North Seattle can face sudden outages with little warning. Local officials highlighted the value of staying informed through weather updates and alerts, allowing residents to make informed decisions during extreme weather events.

The Role of Climate Change

The October windstorm serves as a stark reminder of the increasing frequency and intensity of extreme weather events, a trend often linked to climate change. Experts have noted that rising global temperatures are contributing to more severe weather patterns, including stronger storms and increased Toronto flooding events. As cities like Vancouver face the reality of climate change, discussions about infrastructure resilience and adaptation strategies have gained urgency.

City planners and environmental advocates are pushing for initiatives that enhance the city's ability to withstand extreme weather. This includes improving stormwater management systems, increasing green spaces to absorb rainfall, and investing in renewable energy sources. By addressing these challenges proactively, Vancouver aims to mitigate the impacts of future storms and protect its residents.

Moving Forward

As recovery efforts continue, the focus now shifts to restoring normalcy and preparing for future weather events. Residents are encouraged to report any ongoing outages or hazards to local authorities and to stay updated through reliable news sources. BC Hydro and other utility companies are committed to transparency, providing regular updates on power restoration efforts, even as outages can persist for days as seen in Toronto after a spring storm.

The October 2024 windstorm will be remembered not only for its immediate impacts but also as a catalyst for discussions on resilience and community preparedness. As Vancouver looks ahead, the lessons learned from this storm will shape strategies for better handling extreme weather, ensuring that the city is equipped to face the challenges posed by a changing climate.

In conclusion, while the windstorm caused significant disruption and hardship for many, it also highlighted the strength of community spirit and the importance of proactive planning in the face of climate challenges. Vancouver's response and recovery will be crucial in building a more resilient future for all its residents.

Related News

• Electricity Forum News

• Utility Operations News

Ontario-Quebec Electricity Deal explores hydro imports, terawatt hours, electricity costs, greenhouse gas cuts, and baseload impacts, amid debates on Pickering nuclear operations and competitive procurement in Ontario's long-term energy planning.

Key Points

A proposed hydro import deal from Quebec, balancing costs, emissions, and reliability for Ontario electricity customers.

✅ Draft 20-year, 8 TWh offer reported by La Presse disputed

✅ Ontario seeks lower costs and GHG cuts versus alternatives

✅ Not a baseload replacement; Pickering closure not planned

Ontario is negotiating a possible energy swap agreement to buy electricity from Quebec, but the government is disputing a published report that it is preparing to sign a deal for enough electricity to power a city the size of Ottawa.

La Presse reported Tuesday that it obtained a copy of a draft, 20-year deal that says Ontario would buy eight terawatt hours a year from Quebec – about 6 per cent of Ontario’s consumption – whether the electricity is consumed or not.

Ontario Energy Minister Glenn Thibeault’s office said the province is in discussions to build on an agreement signed last year for Ontario to import up to two terawatt hours of electricity a year from Quebec.

But his office released a letter dated late last month to his Quebec counterpart, in which Mr. Thibeault said the offer extended in June was unacceptable because it would increase the average residential electricity bill by $30 a year.

“I am hopeful that your continued support and efforts will help to further discussions between our jurisdictions that could lead to an agreement that is in the best interest of both Ontario and Quebec,” Mr. Thibeault wrote July 27 to Pierre Arcand.

Ontario would prepare a “term sheet” for the next stage of discussions ahead of the two ministers meeting at the Energy and Mines Ministers Conference later this month in New Brunswick, Mr. Thibeault wrote.

Any future agreements with Quebec will have to provide a reduction in Ontario electricity rates compared with other alternatives and demonstrate measurable reductions in greenhouse gas emissions, he wrote.

Progressive Conservative Leader Patrick Brown said Ontario doesn’t need eight terawatt hours of additional power and suggested it means the Liberal government is considering closing power facilities such as the Pickering nuclear plant early.

A senior Energy Ministry official said that is not on the table. The government has said it intends to keep operating two units at Pickering until 2022, and the other four units until 2024.

Even if the Quebec offer had been accepted, the energy official said, that power wouldn’t have replaced any of Ontario’s baseload power because it couldn’t have been counted on 24 hours a day, 365 days a year.

The Society of Energy Professionals said Mr. Thibeault was right to reject the deal, but called on him to release the Long-Term Energy Plan – which was supposed to be out this spring – before continuing negotiations.

Some commentators have argued for broader reforms to address Ontario's hydro system challenges, urging policymakers to review all options as negotiations proceed.

The Ontario Energy Association said the reported deal would run counter to the government’s stated energy objectives amid concerns over electricity prices in the province.

“Ontarians will not get the benefit of competition to ensure it is the best of all possible options for the province, and companies who have invested in Ontario and have employees here will not get the opportunity to provide alternatives,” president and chief executive Vince Brescia said in a statement. “Competitive processes should be used for any new significant system capacity in Ontario.”

The Association of Power Producers of Ontario said it is concerned the government is even considering deals that would “threaten to undercut a competitive marketplace and long-term planning.”

“Ontario already has a surplus of energy, so it’s very difficult to see how this deal or any other sole-source deal with Quebec could benefit the province and its ratepayers,” association president and CEO David Butters said in a statement.

The Ontario Waterpower Association also said such a deal with Quebec would “present a significant challenge to continued investment in waterpower in Ontario.”

Related News

• Electricity Forum News

• Energy Policy News

Canada Clean Energy Transition accelerates via carbon pricing, renewables, EV incentives, energy efficiency upgrades, smart grids, interprovincial transmission, and innovation in hydro, wind, solar, and storage to cut emissions and power sustainable growth.

Key Points

Canada Clean Energy Transition is a shift to renewables, EVs and efficiency powered by smart policy and innovation.

✅ Carbon pricing and EV incentives accelerate adoption

✅ Grid upgrades, storage, and transmission expand renewables

✅ Industry efficiency and smart tech cut energy waste

So, how do we get there?

We're already on our way.

The final weeks of 2016 delivered some progress, as Prime Minister Justin Trudeau and premiers of 11 of the 13 provinces and territories negotiated a new national climate plan. The deal is a game changer. It marks the moment that Canada stopped arguing about whether to tackle climate change and started figuring out how we're going to get there.

We can each be part of the solution by reducing the amount of energy we use, making sure our homes and workplaces are well insulated and choosing energy efficient appliances. When the time comes to upgrade our cars, washing machines and refrigerators, we can take advantage of rebates that cut the cost of electric models. In our homes, we can install smart technology — like automated thermostats — to cut down on energy waste and reduce power bills.

Even industries that use a lot of energy, like mining and manufacturing, could become leaders in sustainability. It would mean investing in energy saving technology, making their operations more efficient and running conveyor belts, robots and other equipment off locally produced renewable electricity.

Meanwhile, laboratories and factories in Ontario, Quebec and British Columbia are making breakthroughs in areas like energy storage, while renewable energy growth in the Prairie Provinces gathers momentum, which will make it possible to access clean power even when the sun isn't shining and the wind isn't blowing.

Liberal leader Justin Trudeau holds a copy of his environmental platform after announcing details of it at Jericho Beach Park in Vancouver, B.C., on Monday June 29, 2015. (Darryl Dyck/Canadian Press)

The scale and speed of Canada's transition to clean energy depends on provincial and federal policies that do things like tax carbon pollution, build interprovincial electricity transmission lines, invest in renewable energy and grid modernization projects that strengthen the system, and increase incentives for electric vehicles. 

Of course, even the best policies won't produce lasting results unless Canadians fight for them and take ownership for our role in the energy transition. Global momentum toward clean energy may be "irreversible," as former U.S. President Barack Obama recently wrote in the journal Science — but it's up to us whether Canada catches that wave or misses out.

Fortunately, clean energy has always been part of Canada's DNA.

We can learn from the past

In remote corners of the newly minted Dominion of Canada, rushing rivers turned the waterwheels that powered the lumber mills that built the places we inhabit today. The first electric lights were switched on in Winnipeg shortly after Confederation. By the turn of the 20th century, hydro power was lighting up towns and cities from coast to coast.  

Our country is home to some of the world's best clean energy resources, and experts note that zero-emissions electricity by 2035 is possible given our strengths, and fully two-thirds of our power is generated from renewable sources like hydro, wind and solar.

Looking to our heritage, we can make clean growth the next chapter in Canada's history

Recent commitments to phase out coal and invest in clean energy infrastructure mean the share of renewable power in Canada's energy mix is poised to grow. The global shift from fossil fuels to clean energy is opening up huge opportunities and Canada's opportunity in the global electricity market is growing as the country has the expertise to deliver solutions around the world.

Looking to our heritage, we can make clean growth the next chapter in Canada's history — building a nation that's electric, connected and on a practical, profitable path to 2035 zero-emission power for households and industry, stronger than ever.

Related News

• Electricity Forum News

• Renewable Energy News