Harbour Air's electric aircraft a high-flying example of research investment

U.S. Solar-Plus-Storage Growth 2021-2024 highlights rising battery storage co-location with solar PV, grid flexibility, RTO/ISO market signals, and ITC incentives, enabling peak shaving, firming renewable output, and reliable night-time power.

Key Points

Summary of U.S. plans pairing battery storage with solar PV, guided by RTO/ISO markets, grid needs, and ITC policy.

✅ 9.4 GW (63%) co-located with solar PV by 2024

✅ 97% of standalone capacity sited in RTO/ISO regions

✅ ITC improves project economics and grid services revenue

Of the 14.5 gigawatts (GW) of battery storage power capacity planned to come online amid anticipated growth in solar and storage in the United States from 2021 to 2024, 9.4 GW (63%) will be co-located with a solar photovoltaic (PV) solar-plus-storage power plant, based on data reported to us and published in our Annual Electric Generator Report. Another 1.3 GW of battery storage will be co-located at sites with wind turbines or fossil fuel-fired generators, such as natural gas-fired plants. The remaining 4.0 GW of planned battery storage will be located at standalone sites.

Historically, most U.S. battery systems have been located at standalone sites. Of the 1.5 GW of operating battery storage capacity in the United States at the end of 2020, 71% was standalone, and 29% was located onsite with other power generators.

Most standalone battery energy storage sites have been planned or built in power markets that are governed by regional transmission organizations (RTOs) and independent system operators (ISOs). RTOs and ISOs can enforce standard market rules that lay out clear revenue streams for energy storage projects in their regions, which promotes the deployment of battery storage systems. Of the utility-scale pipeline battery systems announced to come online from 2021 to 2024, 97% of the standalone battery capacity and 60% of the co-located battery capacity are in RTO/ISO regions.

Over 90% of the planned battery storage capacity outside of RTO and ISO regions will be co-located with a solar PV plant. At some solar PV co-located plants, the batteries can charge directly from the onsite solar generator when electricity demand and prices are low. They can then discharge electricity to the grid when peak demand is higher or when solar generation is unavailable, such as at night.

Although factors such as cloud cover can affect solar generation output, solar generators, now the number three renewable source in the U.S., in particular can effectively pair with battery storage because of their relatively regular daily generation patterns. This predictability works well with battery systems because battery systems are limited in how long they can discharge their power capacity before needing to recharge. If paired with a wind turbine, for example, a battery system could go days before having the opportunity to fully recharge.

Another advantage of pairing batteries with renewable generators is the ability to take advantage of tax incentives such as the Investment Tax Credit (ITC), which is available for solar projects, and other favorable government plans supporting deployment.

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EV Charging Infrastructure accelerates with federal funding, NEVI corridors, and Level 2/3 DC fast charging to cut range anxiety, support apartment dwellers, and scale to 500,000 public chargers alongside tax credits and state mandates.

Key Points

The network of public and private hardware, software, and policies enabling reliable Level 2/3 EV charging at scale.

✅ $7,500/$4,000 tax credits spur adoption and charger demand

✅ NEVI funding builds 500,000 public, reliable DC fast chargers

✅ Equity focus: apartment, curbside, bidirectional and inductive tech

Speaking in front of a line of the latest electric vehicles (EVs) at this month’s North American International Auto Show, President Joe Biden declared: “The great American road trip is going to be fully electrified.”

Most vehicles on the road are still gas guzzlers, but Washington is betting big on change, with EV charging networks competing to expand as it hopes that major federal investment will help reach a target set by the White House for 50% of new cars to be electric by 2030. But there are roadblocks – specifically when it comes to charging them all. “Range anxiety,” or how far one can travel before needing to charge, is still cited as a major deterrent for potential EV buyers.

The auto industry recently passed the 5% mark of EV market share – a watershed moment, arriving ahead of schedule according to analysts, before rapid growth. New policies at the state and local level could very well spur that growth: the Inflation Reduction Act, which passed this summer, offers tax credits of $4,000 to purchase a used EV and up to $7,500 for certain new ones. In August, California, the nation’s largest state and economy, announced rules that would ban all new gas-powered cars by 2035, as part of broader grid stability efforts in the state. New York plans to follow.

So now, the race is on to provide chargers to power all those new EVs.

The administration’s target of 500,000 public charging units by 2030 is a far cry from the current count of nearly 50,000, according to the Department of Energy’s estimate. And those new chargers will have to be fast – what’s known as Level 2 or 3 charging – and functional in order to create a truly reliable system, even as state power grids face added demands across regions. Today, many are not.

Last week, the White House approved plans for all 50 states, along with Washington DC, and Puerto Rico, to set up chargers along highways, unlocking $1.5bn in federal funding to that end, as US automakers’ charger buildout to complement public funds. The money comes from the landmark infrastructure bill passed last year, which invests $7.5bn for EV charging in total.

But how much of that money is spent is largely going to be determined at the local level, amid control over charging debates among stakeholders. “It’s a difference between policy and practice,” said Drew Lipsher, the chief development officer at Volta, an EV charging provider. “Now that the federal government has these policies, the question becomes, OK, how does this actually get implemented?” The practice, he said, is up to states and municipalities.

As EV demand spikes, a growing number of cities are adopting policies for EV charging construction. In July, the city of Columbus passed an “EV readiness” ordinance, which will require new parking structures to host charging stations proportionate to the number of total parking spots, with at least one that is ADA-accessible. Honolulu and Atlanta have passed similar measures.

One major challenge is creating a distribution model that can meet a diversity of needs.

At the moment, most EV owners charge their cars at home with a built-in unit, which governments can help subsidize. But for apartment dwellers or those living in multi-family homes, that’s less feasible. “When we’re thinking about the largest pieces of the population, that’s where we need to really be focusing our attention. This is a major equity issue,” said Alexia Melendez Martineau, the policy manager at Plug-In America, an EV consumer advocacy group.

Bringing power to people is one such solution. In Hoboken, New Jersey, Volta is working with the city to create a streetside charging network. “The network will be within a five-minute walk of every resident,” said Lipsher. “Hopefully this is a way for us to really import it to cities who believe public EV charging infrastructure on the street is important.” Similarly, in parts of Los Angeles – as in Berlin and London – drivers can get a charge from a street lamp.

And there may be new technologies that could help, exciting experts and EV enthusiasts alike. That could include the roads themselves charging EVs through a magnetizable concrete technology being piloted in Indiana and Detroit. And bidirectional charging, where, similar to solar panels, drivers can put their electricity back into the grid – or perhaps even to another EV, through what’s known as electric vehicle supply equipment (EVSE). Nissan approved the technology for their Leaf model this month.

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Vehicle-to-Home (V2H) Power enables EVs to act as backup generators and home batteries, using bidirectional charging, inverters, and rooftop solar to cut energy costs, stabilize the grid, and provide resilient, outage-proof electricity.

Key Points

Vehicle-to-Home (V2H) Power lets EV batteries run household circuits via bidirectional charging and an inverter.

✅ Cuts energy bills using solar, time-of-use rates, and storage

✅ Provides resilient backup during outages, storms, and blackouts

✅ Enables grid services via V2G/V2H with smart chargers

When the power went out at Nate Graham’s New Mexico home last year, his family huddled around a fireplace in the cold and dark. Even the gas furnace was out, with no electricity for the fan. After failing to coax enough heat from the wood-burning fireplace, Graham’s wife and two children decamped for the comfort of a relative’s house until electricity returned two days later.

The next time the power failed, Graham was prepared. He had a power strip and a $150 inverter, a device that converts direct current from batteries into the alternating current needed to run appliances, hooked up to his new Chevy Bolt, an electric vehicle. The Bolt’s battery powered his refrigerator, lights and other crucial devices with ease. As the rest of his neighborhood outside Albuquerque languished in darkness, Graham’s family life continued virtually unchanged. “It was a complete game changer making power outages a nonissue,” says Graham, 35, a manager at a software company. “It lasted a day-and-a-half, but it could have gone much longer.”

Today, Graham primarily powers his home appliances with rooftop solar panels and, when the power goes out, his Chevy Bolt. He has cut his monthly energy bill from about $220 to $8 per month. “I’m not a rich person, but it was relatively easy,” says Graham “You wind up in a magical position with no [natural] gas, no oil and no gasoline bill.”

Graham is a preview of what some automakers are now promising anyone with an EV: An enormous home battery on wheels that can reverse the flow of electricity to power the entire home through the main electric panel.

Beyond serving as an emissions-free backup generator, the EV has the potential of revolutionizing the car’s role in American society, with California grid programs piloting vehicle-to-grid uses, transforming it from an enabler of a carbon-intensive existence into a key step in the nation’s transition into renewable energy.

Home solar panels had already been chipping away at the United States’ centralized power system, forcing utilities to make electricity transfer a two-way street. More recently, home batteries have allowed households with solar arrays to become energy traders, recharging when electricity prices are low, replacing grid power when prices are high, and then sell electricity back to the grid for a profit during peak hours.

But batteries are expensive. Using EVs makes this kind of home setup cheaper and a real possibility for more Americans as the American EV boom accelerates nationwide.

So there may be a time, perhaps soon, when your car not only gets you from point A to point B, but also serves as the hub of your personal power plant.

I looked into new vehicles and hardware to answer the most common questions about how to power your home (and the grid) with your car.

Why power your home with an EV battery

America’s grid is not in good shape. Prices are up and reliability is down, and many state power grids face new challenges from rising EV adoption. Since 2000, the number of major outages has risen from less than two dozen to more than 180 per year, based on federal data, the Wall Street Journal reports. The average utility customer in 2020 endured about eight hours of power interruptions, double the previous decade.

Utilities’ relationship with their customers is set to get even rockier. Residential electricity prices, which have risen 21 percent since 2008, are predicted to keep climbing as utilities spend more than $1 trillion upgrading infrastructure, erecting transmission lines for renewable energy and protecting against extreme weather, even though grids can handle EV loads with proper management and planning.

U.S. homeowners, increasingly, are opting out. About 8 percent of them have installed solar panels. An increasing number are adding home batteries from companies such as LG, Tesla and Panasonic. These are essentially banks of battery cells, similar to those in your laptop, capable of storing energy and discharging electricity.

EnergySage, a renewable energy marketplace, says two-thirds of its customers now request battery quotes when soliciting bids for home solar panels, and about 15 percent install them. This setup allows homeowners to declare (at least partial) independence from the grid by storing and consuming solar power overnight, as well as supplying electricity during outages.

But it doesn’t come cheap. The average home consumes about 20 kilowatt-hours per day, a measure of energy over time. That works out to about $15,000 for enough batteries on your wall to ensure a full day of backup power (although the net cost is lower after incentives and other potential savings).

How an EV battery can power your home

Ford changed how customers saw their trucks when it rolled out a hybrid version of the F-150, says Ryan O’Gorman of Ford’s energy services program. The truck doubles as a generator sporting as many as 11 outlets spread around the vehicle, including a 240-volt outlet typically used for appliances like clothes dryers. During disasters like the 2021 ice storm that left millions of Texans without electricity, Ford dealers lent out their hybrid F-150s as home generators, showing how mobile energy storage can bring new flexibility during outages.

The Lightning, the fully electric version of the F-150, takes the next step by offering home backup power. Under each Lightning sits a massive 98 kWh to 131 kWh battery pack. That’s enough energy, Ford estimates, to power a home for three days (10 days if rationing). “The vehicle has an immense amount of power to move that much metal down the road at 80 mph,” says O’Gorman.

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Electric Vehicle Adoption Benefits include reduced air pollution, lower greenhouse gas emissions, and improved respiratory health, as regional studies show, with equity considerations for low-income communities and policy mandates accelerating zero-emission vehicles.

Key Points

The environmental and health gains from wider EV uptake, including cleaner air, lower emissions, and fewer asthma cases.

✅ Regional EV growth linked to lower NO2 and PM2.5 levels

✅ Fewer asthma ER visits in higher EV-adoption areas

✅ Address adoption gap to ensure equity in low-income communities

In an effort to mitigate the effects of climate change, countries across the globe are involving electric vehicles in their plans to reduce greenhouse gas emissions, citing the EV climate and cost benefits highlighted by recent analyses.

A federal mandate in Canada, for instance, aims to ensure that one-fifth of all passenger cars, SUVs and trucks sold in Canada are electrically-powered by 2026, with Ottawa set to release EV sales regulations to guide industry. By 2035, if this mandate is carried out, every passenger vehicle sold in Canada will need to be electric, though some critics deem the 2035 target unrealistic based on current conditions.

But what will this shift to electric vehicles actually do for the environment, especially given that 18% of Canada's 2019 electricity came from fossil fuels which affects lifecycle emissions?

One team of researchers with the Keck School of Medicine of USC aimed to find out, conducting what it describes as one of the first studies to analyze the environmental and health impacts of electric vehicles on a regional scale. Their research linked the wider integration of zero-emission vehicles with lower levels of local air pollution and some respiratory problems, a pattern consistent with analyses showing EVs are greener across all 50 states in the U.S.

“When we think about the actions related to climate change, often it’s on a global level,” Erika Garcia, an assistant professor of population and public health at the Keck School of Medicine, said in a press release.

“But the idea that changes being made at the local level can improve the health of your own community could be a powerful message to the public and to policy makers.”

Using data that spanned from 2013 to 2019, Garcia and the team of researchers compared the registration of zero-emissions vehicles with air pollution levels and asthma-related emergency room visits in California. They found that in regions where more electric vehicles were adopted, emergency room visits dropped, along with with pollution levels.

Sandrah Eckel, an associate professor of population and public health sciences and the study’s senior author, said their findings offer hope among a reality of climate anxieties.

“We’re excited about shifting the conversation towards climate change mitigation and adaptation, and these results suggest that transitioning to [electric vehicles] is a key piece of that.”

Garcia added that the study also evaluated disadvantages faced by those living in lower-income communities, which often see higher pollution levels and related respiratory problems, underscoring that EVs are not a silver bullet in broader climate and health policy.

Researchers discovered that adoption of zero-emissions vehicles in low-resource neighbourhoods was slower compared to more affluent areas, amid ongoing debate over whether EV purchase subsidies are an effective tool for Canada.

The study attributes this disparity to what the researchers call an “adoption gap” – referring to groups of people that cannot afford newer vehicles that are electrically-powered.

According to the study, which was published in the journal Science of the Total Environment, the adoption gap “threatens the equitable distribution of possible co-benefits.”

“Should continuing research support our findings, we want to make sure that those communities that are overburdened with traffic-related air pollution are truly benefiting from this climate mitigation effort,” Garcia said in the release.

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Ontario Renewable Energy Procurement 2024 will see the IESO secure wind, solar, and hydro power to meet rising electricity demand, support transit electrification, bolster grid reliability, and serve manufacturing growth across the province.

Key Points

A provincial IESO initiative to add 2,000 MW of clean power and plan 3,000 MW more to meet rising demand.

✅ IESO to procure 2,000 MW from wind, solar, hydro

✅ Exploring 3,000 MW via upgrades and expansions

✅ Demand growth ~2% yearly; electrification and industry

After the Ford government terminated renewable energy contracts five years ago, despite warnings about wind project cancellation costs that year, Ontario's electricity operator, the Independent Electricity System Operator (IESO), is now planning to once again incorporate wind and solar initiatives to address the province's increasing power demands.

The IESO, responsible for managing the provincial power supply, is set to secure 2,000 megawatts of electricity from clean sources, which include wind, solar, and hydro power, as wind power competitiveness increases across Canada. Additionally, the IESO is exploring the possibilities of reacquiring, upgrading, or expanding existing facilities to generate an additional 3,000 MW of electricity in the future.

These new power procurement efforts in Ontario aim to meet the rising energy demand driven by transit electrification and large-scale manufacturing projects, even as national renewable growth projections were scaled back after Ontario scrapped its clean energy program, which are expected to exert greater pressure on the provincial grid.

The IESO projects a consistent growth in demand of approximately two percent per year over the next two decades. This growth has prompted the Ford government, amid debate over Ontario's electricity future in the province, to take proactive measures to prevent potential blackouts or disruptions for both residential and commercial consumers.

This renewed commitment to renewable energy represents a significant policy shift for Premier Doug Ford, reflecting his new stance on wind power over time, who had previously voiced strong opposition to wind turbines and pledged to dismantle all windmills in the province. In 2018, shortly after taking office, the government terminated 750 renewable energy contracts that had been signed by the previous Liberal government, incurring fees of $230 million for taxpayers.

At the time, the government cited reasons such as surplus electricity supply and increased costs for ratepayers as grounds for contract cancellations. Premier Ford expressed pride in the decision, echoing a proud of cancelling contracts stance, claiming that it saved taxpayers $790 million and eliminated what he viewed as detrimental wind turbines that had negatively impacted the province's energy landscape for 15 years.

The Ontario government's new wind and solar energy procurement initiatives are scheduled to commence in 2024, following a court ruling on a Cornwall wind farm that spotlighted cancellation decisions.

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U.S. Clean Hydrogen Hubs aim to scale production, storage, transport, and use as DOE and the Biden administration fund regional projects under the infrastructure law, blending green and blue hydrogen, carbon capture, renewables, and pipelines.

Key Points

Federally funded regional projects to make, move, and use low-carbon hydrogen via green, blue, and pink routes.

✅ $7B DOE funding via infrastructure law

✅ Mix of green, blue, pink hydrogen pathways

✅ Targets 10M metric tons annually by 2030

New details are emerging about the Biden administration’s landmark plans to build out a U.S. clean hydrogen industry.

On Friday, the Department of Energy named the seven winners of $7 billion in federal funds to establish regional hydrogen hubs. The hubs — funded through the infrastructure law — are part of the administration’s efforts to jump-start an industry it sees as key to achieving climate goals like the goal of 100 percent clean electricity by 2035 set by the administration. The aim is to demonstrate everything from the production and storage of hydrogen to its transport and consumption.

“All across the country, from coast to coast, in the heartland, we’re building a clean energy future here in America, not somewhere else,” President Joe Biden said while announcing the hubs in Philadelphia.

From 79 initial proposals, DOE chose the following: the Mid-Atlantic Hydrogen Hub, Appalachian Hydrogen Hub, California Hydrogen Hub, Gulf Coast Hydrogen Hub, Heartland Hydrogen Hub, Midwest Hydrogen Hub and Pacific Northwest Hydrogen Hub.

Many of the winning proposals are backed by state government leaders and industry partners, and by Southeast cities that have ramped up clean energy purchases in recent years as well. The Midwest hub, for example, is a coalition of Illinois, Indiana and Michigan — supported by politicians like Illinois Gov. J.B. Pritzker (D), as well as such companies as Air Liquide, Ameren Illinois and Atlas Agro. The mid-Atlantic hub is supported by Democratic members of Congress representing the region, including Delaware Sens. Chris Coons and Tom Carper and Rep. Lisa Blunt Rochester.

The administration hopes the hubs will produce 10 million metric tons of “clean” hydrogen annually by 2030. But much about the projects remains unknown — including how trends like cheap batteries for solar could affect clean power supply — and dependent on negotiations with DOE.

A win for ‘blue’ hydrogen?
Nearly all hydrogen created in the U.S. today is extracted from natural gas through steam methane reformation. The emissions-intensive process produces what is known as “grey” hydrogen — or “blue” hydrogen when combined with carbon capture and storage.

Four recipients — the Appalachian, Gulf Coast, Heartland and Midwest hydrogen hubs — include blue hydrogen in their plans, though the infrastructure law only mandated one.

That has drawn the ire of environmentalists, who argue blue hydrogen is not emissions-free, partly because of the potential for methane leaks during the production process.

“This is worse than expected,” Clean Energy Group President Seth Mullendore said after the recipients were announced Friday. “The fact that more than half the hubs will be using fossil gas is outrageous.”

Critics have also pointed out that many of the industry partners backing the hub projects include oil and gas companies. The coalitions are a mix of private-sector groups — often including renewable energy developers — and government stakeholders. Proposals have also looped in universities, utilities, environmental groups, community organizations, labor unions and tribal nations, among others.

“The massive build out of hydrogen infrastructure is little more than an industry ploy to rebrand fracked gas,” said Food & Water Watch Policy Director Jim Walsh in a statement Friday. “In a moment when every political decision that we make must reject fossil expansion, the Biden administration is going in the opposite direction.”

The White House has emphasized that roughly two-thirds of the $7 billion pot is “associated” with the production of “green” hydrogen, which uses electricity from renewable sources. Two of the chosen proposals — in California and the Pacific Northwest — are making green hydrogen their focus, reflecting advances such as offshore green hydrogen being pursued by industry leaders, while three other hubs plan to include green hydrogen alongside hydrogen made with natural gas (blue) or nuclear energy (pink).

Many hubs plan to use several methods for hydrogen production, and globally, projects like Brazil's green hydrogen plant highlight the scale of investment, but the exact mix may change depending on which projects make it through the DOE negotiations process. The Midwest hub, for example, told E&E News it’s pursuing an “all-of-the-above” strategy and has projects for green, blue and “pink” hydrogen. The mid-Atlantic hub in southeastern Pennsylvania, Delaware and New Jersey will also generate hydrogen with nuclear reactors.

Energy Secretary Jennifer Granholm has described clean hydrogen as a fresh business opportunity, especially for the natural gas industry, which has supported the concept of sending hydrogen to market through its pipeline network. Lawmakers like Sen. Joe Manchin (D-W.Va.) — who said the Appalachian hub will make West Virginia the “new epicenter of hydrogen” — have pushed for continuing to use natural gas to make hydrogen in his state.

“Natural gas utilities are committed to exploring all options for emissions reduction as demonstrated by the 39 hydrogen pilot projects already underway and are eager to participate in a number of the hubs,” said American Gas Association President and CEO Karen Harbert in a statement Friday.

Green hydrogen also has faced criticism. Some groups argue that the renewable resources needed to produce green hydrogen are limited, even with sources such as wind, solar and hydropower technology, so funding should be reserved for applications that cannot be easily electrified, mostly industrial processes. There also is uncertainty about how the Treasury Department will handle hydrogen made from grid electricity — which can include power from fossil fuel plants — in its upcoming guidance on the first-ever tax credit for clean hydrogen production.

“Even the cleanest forms of hydrogen present serious problems,” Walsh said. “As groundwater sources are drying up across the country, there is no reason to waste precious drinking water resources on hydrogen when there are cheaper, cleaner energy sources that can facilitate a real transition off fossil fuels.”

But Angelina Galiteva, CEO of the hub in drought-prone California, said hydrogen will enable the state “to increase renewable penetration to reach all corners of the economy,” noting parallel initiatives such as Dubai's solar hydrogen plans that illustrate the potential.

“Transitioning to renewable clean hydrogen will pose significantly less stress on water resources than remaining on the current fossil path,” she said.

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