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Got a solar panel? Time for a little energy arbitrage.
The new film Dumb Money gives home traders the Hollywood treatment. The movie, based on the GameStop saga of 2021, recounts how amateur stock enthusiasts and trolls united on online platforms like Reddit drove up the stock price of an over-the-hill video game store and caused huge losses for hedge funds that bet against the stock.
The bizarre episode shone a spotlight on just how many armchair stock jockeys are out there. Now, another type of trader is quietly growing in popularity: the garage energy baron.
Online, you can find solar enthusiasts not only celebrating how much energy their panels created but also how much money they made by selling energy back to the electric utility. As more homes can make and store their own energy, more homeowners are trying to get in on “energy arbitrage.” They are buying low and selling high, though this time the product in question is not a share of company stock, but a kilowatt-hour of energy.
Most people have minimal control of their home energy. It is a resource we consume, and the principal way to affect the monthly bill is by turning up the AC or turning off the lights. The roughly 5 percent of Americans with solar panels, along with those who have wind turbines or other ways to generate electricity, have been changing the equation by becoming energy providers rather than passive recipients.
Home solar lowers the amount of energy a home must buy from the grid. Sometimes, when the sun shines high and unobstructed, homeowners with a large solar setup can make more energy than the home requires. In most places, they can turn around and sell the excess energy back to the grid. Net metering, as it is called, helps to recoup the five-figure sum needed to pay for solar panels in the first place.
The revenue can be eye-popping. In the Tesla Solar subreddit, a hive of people with Elon Musk’s solar panels and integrated home energy systems, users recount the details of their system and their savings. A poster from Texas this week uploaded a screenshot showing they made $600 in a month by selling back energy as part of Tesla Electric, the company’s virtual power plant (VPP).
Tesla Electric works because of a new wrinkle in the energy game. With the advent of products such as Tesla’s Powerwall — basically a big, intelligent battery for the house — homeowners can now make their own energy and store it for later, which opens new possibilities. The first is a no-brainer: Stashing excess energy in the battery creates a backup power supply in case of a blackout. However, the ability to charge and discharge the battery at will gives rise to gamesmanship.
Suppose that instead of selling solar energy to the grid right away (in the afternoon when there’s lots of it), a homeowner stashes it and waits. In the evening, when energy demand rises as people get home from work and the price of energy rises, that’s when their system hits the “sell button.”
This is energy arbitrage. It earns the biggest windfalls when prices are volatile, with big gaps between high and low. That’s exactly what happened in Australia in 2022, where wild markets earned record profits for anyone who could use a big battery to buy and sell energy. In Texas, the Tesla Electric VPP automatically sells the energy stored in customers’ home Powerwalls when the price is the highest (and refills the battery when electricity is cheap), which leads to windfall profits during a major “sell event.” One Redditor claimed to be up more than $800 this summer, mostly by using his Powerwall to perform energy arbitrage.
Indeed, homeowners don’t need solar panels or wind turbines to do this, says Jeff Maguire, a researcher at the National Renewable Energy Lab.
“If you're in that scenario and you have a battery, you can charge the battery when energy is cheap and discharge it when energy is expensive,” he says. “You'll make a little bit of profit, and you can do that every day. It’s called energy arbitrage. It's one way to pay [yourself] back for the batteries. It's usually not enough to cover the cost of the battery itself, but it certainly helps, and then you'll have it for resilience when you need it.”
Of course, all this scheming and strategy is reliant upon one basic idea: that a person can sell electricity back to the grid at fair market price. There is no guarantee this will continue indefinitely.
Over the past couple of years, state lawmakers and electric utility operators around the country have proposed cutting off net metering, slashing the rates residents get paid for extra energy. One (disputed) argument from utilities is “cost-shift,” the idea that people with solar panels are subsidized by everybody else who pays for standard electricity, and who pays for the upkeep of the grid as part of every kWh they purchase. Another is technical: America’s aging infrastructure wasn’t built with this “backfeeding” in mind, and may not be able to deal with a very large number of homes sending juice back onto the grid.
The gambit is also about the big utilities’ bottom line. They don’t want to have to “curtail” some of their solar because there’s too much on the grid, thanks to net-metering residents. And they, too, are engaged in the energy arbitrage game.
Many electric utilities are installing their own large energy storage facilities, which is crucial as the country uses more and more renewable energy: If people can’t move their electricity consumption to the times of peak energy supply — say, by charging their EV in the middle of the day when the sun shines — then we need to save lots of our renewable energy for later. When the utility stashes solar energy made from the noontime sun and sells it at 7 p.m. when residential electricity is costlier, it makes a little profit in the process to help pay for the cost of those storage systems.
What all this means for the home energy trader could vary wildly state by state. New Hampshire, in a surprise, just decided against slashing net metering rates. Sunny California, the country’s biggest residential solar market, cut energy payments for new PV installations by 75 percent – in theory because there’s already too much solar – while grandfathering in all the people who already have panels.
It may turn out that if you want to be a solar trader, you should have started yesterday.
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Current conditions: A rare wildfire alert has been issued for London this week due to strong winds and unseasonably high temperatures • Schools are closed on the Greek islands of Mykonos and Paros after a storm caused intense flooding • Nearly 50 million people in the central U.S. are at risk of tornadoes, hail, and historic levels of rain today as a severe weather system barrels across the country.
President Trump today will outline sweeping new tariffs on foreign imports during a “Liberation Day” speech in the White House Rose Garden scheduled for 4 p.m. EST. Details on the levies remain scarce. Trump has floated the idea that they will be “reciprocal” against countries that impose fees on U.S. goods, though the predominant rumor is that he could impose an across-the-board 20% tariff. The tariffs will be in addition to those already announced on Chinese goods, steel and aluminum, energy imports from Canada, and a 25% fee on imported vehicles, the latter of which comes into effect Thursday. “The tariffs are expected to disrupt the global trade in clean technologies, from electric cars to the materials used to build wind turbines,” explained Josh Gabbatiss at Carbon Brief. “And as clean technology becomes more expensive to manufacture in the U.S., other nations – particularly China – are likely to step up to fill in any gaps.” The trade turbulence will also disrupt the U.S. natural gas market, with domestic supply expected to tighten, and utility prices to rise. This could “accelerate the uptake of coal instead of gas, and result in a swell in U.S. power emissions that could accelerate climate change,” Reutersreported.
Republican candidates won in two House races in Florida on Tuesday, one of which was looking surprisingly tight going into the special elections. The victories by Jimmy Patronis in Florida’s First District and Randy Fine in the Sixth District bolster the party’s slim House majority and could spell trouble for the Inflation Reduction Act as the House Ways and Means Committee mulls which programs to cut to pay for tax cuts. But the result in Wisconsin’s Supreme Court election was less rosy for Republicans. Liberal Judge Susan Crawford defeated conservative Brad Schimel despite Schimel’s huge financial backing from Tesla CEO and Trump adviser Elon Musk, who poured some $15 million into the competition. The outcome “could tarnish the billionaire’s political clout and trigger worry for some Republicans about how voters are processing the opening months of Trump’s new administration,” as The Wall Street Journalexplained.
The Trump administration announced mass layoffs across the Department of Health and Human Services on Wednesday, part of a larger effort to reduce the agency’s workforce by 25%. The cuts included key staffers with the Low Income Home Energy Assistance Program, which has existed since 1981 and helps some 6.7 million low-income households pay their energy bills. A 2022 white paper calls LIHEAP “one of the most critical components of the social safety net.” The move comes at a time when many U.S. utilities are preparing to raise their energy prices to account for higher costs for materials, labor, and grid upgrades. In a scathing letter to HHS Secretary Robert F. Kennedy. Jr., Senate Energy and Commerce Democrats call the workforce cuts “reckless” and demand detailed explanations for why roles have been eliminated.
Energy storage startup Energy Vault on Wednesday announced it had closed $28 million in project financing for a hybrid green hydrogen microgrid energy storage facility in California. The firm says its Calistoga Resiliency Center, deployed in partnership with utility company Pacific Gas & Electric, is “specifically designed to address power resiliency given the growing challenges of wildfire risk in California.” The zero-emission system will feature advanced hydrogen fuel cells that are integrated with lithium-ion batteries, which can provide about 48 hours of back-up power via a microgrid to the city of Calistoga during wildfire-related power shutoffs. The site is expected to be commercially operational in the second quarter of 2025.
“The CRC serves as a model for Energy Vault’s future utility-scale hybrid microgrid storage system deployments as the only existing zero-emission solution to address [power shutoff] events that is scalable and ready to be deployed across California and other regions prone to wildfires,” the company said in a press release. As Heatmap’s Katie Brigham wrote last fall, PG&E has become an important partner for climate and energy tech companies with the potential to reduce risk and improve service on the grid.
China will finalize its first-ever sale of a green sovereign bond Wednesday. The country is expected to issue the bond on the London Stock Exchange and has reportedly received more than $5 billion in bids. “It’s no coincidence that China has chosen to list its debut green bond in London, given European investors’ continued strong demand for environmental products,” Bloombergnoted. Green bonds are investment vehicles that raise money exclusively for projects that benefit the climate or environment. China’s finance ministry wants the bond to “attract international funds to support domestic green and low-carbon development,” and specifically climate change mitigation and adaptation, nature conservation and biodiversity, and pollution prevention and control. Some of the money raised might also go toward China’s EV charging infrastructure, according toReuters.
GE Vernova has now produced more than half of the turbines needed for the SunZia Wind project in New Mexico. When completed in 2026, the 2.4 gigawatt project will be the largest onshore wind farm in the Western Hemisphere.
Rob and Jesse catch up on the Greenhouse Gas Reduction Fund with former White House official Kristina Costa.
The Inflation Reduction Act dedicated $27 billion to build a new kind of climate institution in America — a network of national green banks that could lend money to companies, states, schools, churches, and housing developers to build more clean energy and deploy more next-generation energy technology around the country.
It was an innovative and untested program. And the Trump administration is desperately trying to block it. Since February, Trump’s criminal justice appointees — led by Ed Martin, the interim U.S. attorney for the District of Columbia — have tried to use criminal law to undo the program. After failing to get the FBI and Justice Department to block the flow of funds, Trump officials have successfully gotten the program’s bank partner to freeze relevant money. The new green banks have sued to gain access to the money.
On this week’s episode of Shift Key, Rob and Jesse talk with Kristina Costa, who has been tracking the effort to bankrupt the green banks. Costa helped lead the Inflation Reduction Act’s implementation in the White House from 2022 to 2025 — and is a previous Shift Key guest. She joins us to discuss how Trump is weaponing criminal law to block a climate program, whether there’s any precedent for his actions, and what could come next in the legal battle. Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Robinson Meyer: There's kind of two lines you hear from the Trump administration about this, two claims made by the Trump administration about the reason for these seizures, and I just wanna talk about them briefly because this is an unprecedented action. We should look at why the government has claimed that it needs to take this unprecedented action.
The first has to do with this video made by Project Veritas, a kind of conservative media organization …
Kristina Costa: A hit squad.
Meyer: A hit squad that recorded, unwittingly, an EPA official who described the EPA’s actions during December 2024, between the loss of the election and the inauguration, as “throwing gold bars off the Titanic.” That the agency was so eager and desperate to spend as much of the IRA down as it could before the Trump administration took office that it was like they were throwing gold bars off the Titanic — you know, a sinking ship.
The EPA administrator has fixated on this line and described it as waste and self-dealing, suggesting reckless financial mismanagement, blatant conflicts of interest, astonishing sums of tax dollars awarded to unqualified recipients and severe deficiencies of regulatory oversight.
You were involved in setting up the IRA. I wonder, first of all, just how do you reflect on this episode? And second of all, was the Biden administration doing the proverbial version of throwing gold bars off the Titanic during the post-election period?
Costa: Yeah, so I mean, it falls apart as any sort of quote-unquote evidence in what's happening with the Greenhouse Gas Reduction Fund if you just believe in the linear nature of time. So, as I said, we announced EPA made the selections in April of 2024. The funds were fully obligated in August of 2024. Grantees were starting to make announcements about investments in October of 2024 — all dates which precede election day by weeks to months. And so it is just a complete fabrication on the part of Lee Zeldin that there was any sort of inappropriate action on the part of the Biden EPA or any of the other agencies in doing what Congress directed us to do, which was to award and obligate funds to recipients consistent with the provisions of the Inflation Reduction Act that authorized and appropriated funds for the programs.
We had also — and I think I might have said this when I was with you guys in December — one of the first things that we did, from the White House implementation team, was to meet with all of our grant agencies and, in September and October of 2022, set targets for them for how much funding we wanted them to try to award and obligate by the end of the administration. And we set a goal, basically, that we would be aiming to have at least 80% of the available funds obligated by the end of 2024. And we hit that. And so the idea that there was some massive acceleration post-election — like, were there some contracts that the agencies obligated in December and January that, in the event of a Kamala Harris administration, they would've maybe obligated in February and March instead? Sure. I'm not going to say otherwise, but those grants had been made already. There wasn't this rush of actual decision-making.
Music for Shift Key is by Adam Kromelow.
That trust was hard won — and it won’t be easily regained.
Spring — as even children know — is the season for planting. But across the country, tens of thousands of farmers who bought seeds with the help of Department of Agriculture grants are hesitating over whether or not to put them in the ground. Their contractually owed payments, processed through programs created under the Biden administration, have been put on pause by the Trump administration, leaving the farmers anxious about how to proceed.
Also anxious are staff at the sustainability and conservation-focused nonprofits that provided technical support and enrollment assistance for these grants, many of whom worry that the USDA grant pause could undermine the trust they’ve carefully built with farmers over years of outreach. Though enrollment in the programs was voluntary, the grants were formulated to serve the Biden administration’s Justice40 priority of investing in underserved and minority communities. Those same communities tend to be wary of collaborating with the USDA due to its history of overlooking small and family farms, which make up 90% of the farms in the U.S. and are more likely to be women- or minority-owned, in favor of large operations, as well as its pattern of disproportionately denying loans to Black farmers. The Biden administration had counted on nonprofits to leverage their relationships with farmers in order to bring them onto the projects.
“This was an opportunity to repair some of that trust, through this project,” Emily Moose, the executive director of the sustainable agriculture organization A Greener World, told me in an email. Moore and her teammates spent years recruiting farmers from the group’s Oregon community, and eventually got 77 of them to sign up to create certified regenerative farm management plans. A Greener World was notified in January that its reimbursements were being suspended, and now risks losing $10,000 in incentive payments, meaning the farmers in the program “are now having to weigh paying for certification out of pocket or dropping the certification process entirely and losing market opportunities.”
Nicole Delcogliano, director of programs at the Organic Growers School, a farmer training organization in North Carolina, and a small farmer herself had similar hopes for a grant the group received to help mentor and educate early-stage farmers. The department had “finally started to build back a little bit of trust,” she told me. With the funding pause, she said, “I think that is going to be lost.”
Affected grants include billions set aside for the USDA through the Inflation Reduction Act for soil and water conservation projects, as well as more than $820 million earmarked for the Rural Energy for America Program, or REAP, which incentivized agricultural producers to make energy-efficiency improvements on their land. Grants issued through the Partnerships for Climate-Smart Commodities program for farm innovations that have greenhouse gas and carbon sequestration benefits — funded through the USDA’s Commodity Credit Corporation, a Dust Bowl-era entity more typically leveraged to protect farm income and prices during disasters — are also on pause. Original plans for the program under Biden would have seen it eventually scaled to 60,000 farms, reducing an estimated 50,000 million metric tons of CO2 equivalent.
Though the Trump administration eventually released about 1% of the IRA-related USDA grant money in late February, much remains out of reach, with no timeline for payout. The National Sustainable Agriculture Coalition assumes that the “majority” of the $2.3 billion allocated to farmers on IRA-funded contracts is “likely still in USDA’s coffers.” Additionally, more than half of the $3.1 billion allocated to the Partnerships for Climate-Smart Commodities program had not yet been paid out by the end of February, according to The Hagstrom Report, an agricultural news service. (The Trump administration has said it would reconsider REAP grants if applicants rewrite them to “remove harmful [diversity, equity, inclusion, and accessibility] and far-left climate features.”)
All of the affected grant programs work on a reimbursement basis, with the farmers incurring costs upfront protected, in theory, by a contractual guarantee that the government will pay them back. Individual farmers aren’t usually the direct beneficiaries of USDA grants, however. The USDA more commonly awards a grant to nonprofit organizations that, in turn, provide financial and technical support to farmers making sustainable transitions. Many of the nonprofits are now having to furlough or lay off staff. Meanwhile, farmers are still seeking their reimbursements, but there’s no funding there to pay them.
Hannah Smith-Brubaker, the executive director of Pasa Sustainable Agriculture, a Pennsylvania-based nonprofit that was awarded a Climate Smart Commodities grant and a Farm and Food Workers Relief from the USDA, is planning to furlough 60 people — most of her team — due to the pause. Another project director at a Mid-Atlantic sustainability nonprofit told me his organization has “been lending cash” from their own books since January 27, when the pause was announced, and that he anticipated being laid off shortly after our call.
But while the nonprofits are certainly hurting, the farmers are the ones stuck with the final bill. In addition to the USDA’s history of discriminating against Black farmers, many who manage smaller acreages report feeling overlooked by the federal government in favor of powerful agro-business conglomerates. More than 70% of farmers under age 40 reported being unfamiliar with USDA programs that could help them, and nearly half said they’d never received support from the agency, according to polling by the National Young Farmers Coalition published in 2022.
“In the last administration, there was recognition that they didn’t have the trust of a lot of farmers who historically haven't been served, or been underserved, by USDA,” Smith-Brubaker said. With programs like the Climate-Smart Commodities grant, the Biden administration “asked us to leverage the trust that we already have with farmers — to ask them to trust us to enter into this program.”
It worked: Many of the more than 30,000 contracted farms are already a year or two into multi-year projects with nonprofits designed to improve soil health, plant cover crops, or improve farm efficiency. That means they’ve already hired the extra staff for the projects, placed orders for new equipment, and set aside precious land for soil-enrichment projects.
But with no word on the future of their funding, some are now hesitating over whether to spend more money out of pocket on those projects if the government might not uphold its end of the deal. The pause has led many of the farmers I spoke with to reevaluate their trust in future USDA funding. “It’s unsettling because you’re like, ‘Well, if I implement the practices I’m supposed to, but then I don’t get that reimbursement sometime in 2025, what does that look like?’” said Delcogliano, who received one Conservation Stewardship Plan payment in October for her farm, Green Toe Ground, but hasn’t yet heard yet whether future payments will be affected.
Delcogliano also emphasized that despite the commodities grant containing the “buzz word” of “climate,” what it actually encourages are long-established practices that help conserve water and soil. “It’s just smart farming,” she told me. Ed Winebarger, a chef and farmer in North Carolina, told me he participated in the Climate-Smart Commodities program for a year and saw an immediate 20% increase in production. “My crops did better, the system works — period,” he said.
Small farmers who pursued the government grants likely would have been interested in the practices regardless of the financial incentives in many cases; Erin Foster West, the Policy Campaigns Director for the National Young Farmers Coalition, told me the group’s research found nearly 85% of its membership was “motivated by environmental stewardship to farm.” Caroline Anderson Novak, the head of the Professional Dairy Managers of Pennsylvania — which is collaborating with Penn State on its greenhouse-gas-reducing Climate-Smart Commodities program, and which hasn’t received a notification of a pause from the USDA as other organizations have — told me that things like experimental feeds and sharper data assessments represent “operational improvements” that just happen to have attractive climate upsides. “They are things that the farm already wants to do,” she said.
What the grants do is provide the capital necessary for farmers to put these efficiency upgrades into practice. Margins, particularly at small farms, can be razor thin, and the risks of operational experiments can be steep. “A lot of the time, you would need to pursue a loan just to get started with the project,” Emma Jagoz, the owner of Moon Valley Farm in Maryland, who has hundreds of thousands in USDA grants tied up by the pause, told me.
As a result, farmers waiting for clarity on their grants generally have clear eyes about the root of the problem. “The organization that we work with, they can’t help the cuts. It’s not their fault,” Patrick Brown, who enrolled 90% of his North Carolina farm’s acreage in a climate-smart project, told me. “This administration has blatantly stated their approach.”
Kristin Reilly, the executive director of the Choose Clean Water Coalition, a collective of small nonprofits in the Chesapeake Bay watershed that is helping its farming partners navigate the funding freeze, agreed that “the practitioners on the ground are definitely seeing that it’s not the nonprofits who are not paying them; they’re struggling along with them.”
Almost everyone I spoke with was pessimistic that the USDA would honor the grants, even as Earthjustice and other groups have launched lawsuits against the federal government over the freeze. (Pasa has joined a lawsuit with the Southern Environmental Law Center.) “I don’t think [the pause is] going to lift as long as this guy is in power because he’s so disconnected from reality,” Winebarger, the North Carolina chef and farmer, said of President Trump. “He’s never put his hands in dirt in his entire life. He doesn’t understand me. He doesn’t understand my farming neighbors.”
Delcogliano shared a similar sentiment: “The government is incompetent,” she told me. “They’re not in touch with the people that are actually doing the work.”
Perhaps most crucially, while the federal money is paused, the climate continues changing. Any given season could bring a new drought or deluge that wipes out a farm entirely. Though separate from the troubles with the grant pauses, both Delcogliano and Winebarger are also recovering from extensive damage to their farms from Hurricane Helene, a process they told me has been made even more painful due to the lack of emergency funding available from the Federal Emergency Management Agency. Farmers will also be particularly vulnerable to the impacts of some of the tariffs the Trump administration plans to enact this week.
“It just feels like I’m driving behind a truck full of hammers that are dumping on me,” Winebarger said of the compounding problems. “And I can’t dodge them — they’re going to hit me. I don’t know how we’re going to get out from underneath this.”
Wolfe’s Neck Center for Agriculture & the Environment, a Maine-based nonprofit that stands to lose a $35 million Climate-Smart Commodities grant, has begun to reformulate how its programs could continue with the support of buyer funds, state funding sources, or philanthropic dollars instead. It had once envisioned working with more than 400 partners over the grant’s lifespan, but that idea has given way to smaller-scale projects it can still afford.
“This is about so much more than climate change,” Ellen Griswold, the director of Wolfe’s Neck, stressed to me about the importance of finding a way forward with or without the government. “It’s about making farmers as resilient and profitable as possible. Without this assistance, there will be impacts to the farming community” — including farmers themselves and their suppliers. That could include a fencing company, nursery, or refrigerated truck dealer farmers can no longer afford to pay, or regional schools or food banks that are now forced to pay more for local, organic produce.
The reverberations of the grant pause will be felt far into the future, too. Even if the contracts are ultimately honored by the Trump administration, some farmers will undoubtedly feel justified in their suspicions of partnering with the federal government. Nonprofits will have more difficulty convincing community partners to take on voluntary climate projects down the line, and common-sense efficiency projects with climate co-benefits will stay dormant.
“If another opportunity comes along like this, I completely understand if farmers say, ‘No, I’m not doing that,’” Smith-Brubaker of Pasa said.