Every week, Heatmap News Executive Editor Robinson Meyer and Princeton University Professor and energy systems expert Jesse Jenkins make sense of the biggest shift of our time -- navigating the energy transition away from fossil fuels. Drawing on their years of experience reporting on and researching climate change and decarbonization, Meyer and Jenkins unpack the most important issues of the week and how the impacts of climate change and efforts to address it are transforming our economy, politics, and society at large. Music by Adam Kromelow.
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Shift Key Summer School's inaugural session demystifies essential energy concepts, clarifying the distinction between energy as a quantity and power as a rate. The hosts use relatable analogies and examples to explain units like joules, watts, calories, and various watt-hour scales, from personal electronics to power plants. The episode also critically examines common energy reporting metrics and the real-world breakdown of electricity consumption across different sectors. This foundational discussion provides a crucial understanding of how the power grid works.
Food is a huge climate problem. It’s responsible for somewhere between a quarter and a third of global greenhouse gas emissions, but it concerns a much smaller share of global climate policy. And what policy does exist is often … pretty bad. On this week’s episode of Shift Key, Rob and Jesse talk with Michael Grunwald, the author of the new book We Are Eating the Earth . It’s a book about land as much as it’s a book about food — because no matter how much energy abundance we ultimately achieve, ...
You might not think that often about medium-duty trucks, but they’re all around you: ambulances, UPS and FedEx delivery trucks, school buses. And although they make up a relatively small share of vehicles on the road, they generate an outsized amount of carbon pollution. They’re also a surprisingly ripe target for electrification, because so many medium-duty trucks drive fewer than 150 miles a day. On this week’s episode of Shift Key, Rob and Jesse talk with John Henry Harris, the cofounder and ...
Why has it been so hard for the world to make progress on climate change over the past 30 years? Maybe it’s because we’ve been thinking about the problem wrong. Academics and economists have often framed climate change as a free-rider or collective action problem, one in which countries must agree not to emit greenhouse gases and abuse the public commons. But maybe the better way to understand climate action is as a fight that generates winners and losers, defined primarily by who owns what. On ...
Did the Supreme Court just make it easier to build things in this country — or did it give a once-in-a-lifetime gift to the fossil fuel industry? Last week, the Supreme Court ruled 8-0 against environmentalists who sought to use a key permitting law, the National Environmental Policy Act, to slow down a railroad in a remote but oil-rich part of Utah. Even the court’s liberals ruled against the green groups. But the court’s conservative majority issued a much stronger and more expansive ruling, u...
Shift Key is off this week for Memorial Day, so we’re re-running one of our favorite episodes from the past. With Republicans in the White House and Congress now halfway to effectively repealing the Inflation Reduction Act, the United States’ signature climate law, we thought now might be a good moment to remind ourselves why emissions reductions matter in the first place. To that end, we’re resurfacing our chat from November with Kate Marvel , an associate research scientist at Columbia Univers...
Republicans are preparing to tear up America’s clean energy tax credits as part of their budget reconciliation megabill. Hollowing out those policies will have sweeping implications for the country’s energy system — it could set back solar, nuclear, and geothermal development; bring less electricity supply onto the grid; and devastate the country’s fledgling electric vehicle supply chain. A new report — written by our own Jesse Jenkins — is all about the real-life consequences of killing the tax...
The fight over the Inflation Reduction Act has arrived. After months of discussion, the Republican majority in the House is now beginning to write, review, and argue about its plans to transform the climate law’s energy tax provisions. We wanted to record a show about how to follow that battle. But then — halfway through recording that episode — the Republican-controlled House Ways and Means Committee dropped the first draft of their proposal to gut the IRA, and we had to review it on-air. We we...
Shift Key investigates the recent Iberian blackout that impacted over 50 million people, examining its potential causes and debunking theories blaming renewables. The hosts dive into the intricate engineering of the modern power grid, explaining how operators manage frequency, voltage, and inertia to prevent cascading failures. They discuss the trade-offs between grid resilience and efficiency, offering solutions and lessons for building a more robust, decarbonized energy future.
Texas is one of the country’s biggest producers of zero-emissions energy. Last year, the Lone Star State surpassed California to become the country’s No. 1 market for utility-scale solar. More solar and batteries were added to the Texas grid in 2024 than any other energy source, and the state has long dominated in onshore wind. But that buildout is now threatened. A new tranche of bills in the Texas House and Senate could impose punitive engineering requirements on wind, solar, and storage plant...
In just the past few years, Chinese EV-maker BYD has become the most important car company most Americans have still never heard of. It is China’s biggest private employer, the world’s third most valuable automaker (after Tesla and Toyota), and it’s capable of producing more than 5 million cars a year. It’s also just one of dozens of innovative new Chinese auto companies that are set to transform the global mobility market — regardless of what happens with Trump’s tariffs. On this week’s episode...
Donald Trump has implemented what is easily the most chaotic set of American economic policies in recent memory. First, the U.S. declared a trade war on the entire world, imposing breathtaking tariffs on many of the country’s biggest trading partners. He’s paused that effort — but scaled up punitive tariffs on China, launching what would be the 21st century’s biggest global economic realignment without any apparent plan. Now Trump says that more levies are coming on semiconductors and pharmaceut...
China’s industrial policy for clean energy has turned the country into a powerhouse of solar, wind, battery, and electric vehicle manufacturing. But long before the country’s factories moved global markets — and invited Trump’s self-destructive tariffs — the country implemented energy and technology policy to level up its domestic industry. How did those policies work? Which tools worked best? And if the United States needs to rebuild in the wake of Trump’s tariffs, what should this country lear...
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...
If you care about decarbonizing the power grid anytime soon, you have to care about data centers. The AI boom and the ongoing growth of the internet have driven a big new cycle of data center construction in the United States, with tech companies trying to buy amounts of electricity comparable to those used by large cities. Peter Freed has seen this up close. As Meta’s former director of energy strategy, he worked on clean energy procurement and data center development from 2014 to 2024. He is n...
Republicans in Washington are pushing for at least two big changes to the country’s car-related policies. In Congress, some lawmakers want to repeal the $7,500 tax credit that helps consumers buy or lease a new electric vehicle — as well as a matching tax credit that lets companies buy heavy-duty zero-carbon trucks. And at the Environmental Protection Agency, officials are trying to roll back Biden-era rules encouraging dealerships to sell more EVs through 2032. What will that mean for the clima...
Donald Trump’s second term has now entered its second month. His administration is doing much to slow down renewables, and everything it can to slow down offshore wind. Jael Holzman is a senior reporter at Heatmap and the author of our newsletter, “The Fight,” about local battles over renewable permitting around the country. On this week’s episode of Shift Key, Rob and Jesse talk to Jael about the bleak outlook for offshore wind, the use of presidential authority to impede energy development, an...
Longtime listeners of Shift Key will recognize the name Intersolar and Energy Storage North America, one of the country’s premier solar industry conferences. Shift Key was live at this year’s event, hosting a panel on the present and future of the solar industry featuring a pair of marquee panelists: Tom Starrs, currently the vice president for government and public affairs at EDP Renewables, North America, who has more than 30 years of experience in the renewables industry; and Maria Robinson, ...
Congress is still debating the fate of the Inflation Reduction Act, but the Trump administration has already torn up energy and climate policies across the federal government. It’s time to step back and try to take stock. How much damage has the Trump administration already done to decarbonization? What’s most worrying? What was going to happen anyway? And what might still be saved? On this week’s episode of Shift Key, Rob and Jesse go agency by agency to understand the most important changes an...
The most important energy regulators in the United States aren’t all in the federal government. Each state has its own public utility commission, a set of elected or appointed officials who regulate local power companies. This set of 200 individuals wield an enormous amount of power — they oversee 1% of U.S. GDP — but they’re often outmatched by local utility lobbyists and overlooked in discussions from climate advocates. Charles Hua wants to change that. He is the founder and executive director...
The first few weeks of the new Trump administration have seen an onslaught of anti-climate actions: an order punishing the wind industry, an attempted reversal of the Environmental Protection Administration’s climate authority, and a brazen — and possibly unconstitutional — attempt to freeze all spending under Biden’s climate laws. Democrats’ climate legacy seems to be under assault. How will they respond? Senator Brian Schatz has represented Hawaii in the U.S. Senate since 2010. He is the chief...
Over the past 30 years, the U.S. automaking industry has transformed how it builds cars and trucks, constructing a continent-sized network of factories, machine shops, and warehouses that some call “Factory North America.” President Trump’s threatened tariffs on Canadian and Mexican imports will disrupt and transform those supply chains. What will that mean for the automaking industry and the transition to EVs? Ellen Hughes-Cromwick is the former chief economist at Ford Motor Company, where she ...
On February 1 — that is, three days from now — President Donald Trump has promised to apply a tariff of 25% to all U.S. imports from Canada and Mexico, crude oil very much not excepted. Canada has been the largest source of American crude imports for more than 20 years. More than that, the U.S. oil industry has come to depend on Canada’s thick, sulfurous oil to blend with America’s light, sweet domestic product to suit its highly specialized refineries. If that heavy, gunky stuff suddenly become...
The Los Angeles wildfires have killed at least 27 people, destroyed more than 17,000 structures, and displaced tens of thousands. In the next few months, the billions of costs in damage to homes and property will ripple through the state’s insurance market — and likely cause its insurer of last resort to run out of money. Benjamin Keys has studied how natural disasters, rising sea levels, and increasing exposure to risk have driven up insurance costs nationwide. He is a professor of real estate ...
Hydrogen. What are you even supposed to think about it? If you’ve spent serious time focusing on climate policy, you’ve heard the hype about hydrogen — about the miraculous things that it might do to eliminate carbon pollution from cars, power plants, steel mills, or more. You’ve also seen that hype fizzle out — even as governments have poured billions of dollars into making it work. On this week’s episode of Shift Key, Rob and Jesse give you a rough guide for how to think about clean hydrogen, ...
China’s greenhouse gas emissions were essentially flat this year — or they recorded a tiny increase, according to a recent report from the Centre for Research on Energy and Clean Air, or CREA. A third of experts surveyed by the report believe that its coal emissions have peaked. Has the world’s No. 1 emitter of carbon pollution now turned a corner on climate change? Lauri Myllyvirta is the co-founder and lead analyst at CREA, an independent research organization focused on air pollution and head...
Happy new year! On this week’s episode of Shift Key, Rob and Jesse answer some of the questions they’ve received from readers throughout the year. Hot topics include: What happened to the Green New Deal, and is the Inflation Reduction Act part of its legacy? Should U.S. policy prioritize solar manufacturing or solar deployment? And how can normal people keep AI-driven data centers from blowing up the grid? Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse...
The rise of artificial intelligence and the associated expansion of data centers is driving surging demand for new power supply. Earlier this fall at the annual meeting of Princeton University’s Andlinger Center for Energy and the Environment, Jesse sat down with a panel of experts to discuss how society can meet the growing energy demands of AI while staying on track broader decarbonization efforts. How will we power the growing demand from AI and data centers? What role can nuclear power reall...
Jennifer Granholm has long been one of the most interesting figures in the Democratic Party. A former federal prosecutor, she was the governor of Michigan from 2003 to 2011, leading the state during the Great Recession and subsequent auto bailout. Since 2021, she has been the 16th U.S. Secretary of Energy. While there, she has overseen the department’s transformation from an R&D-focused agency to an aspiring engine of industrial strategy. On this week’s episode of Shift Key, Rob sits down wi...
The Chinese electric automaker BYD is entering a new stage in its history. Last month, it sold more than half a million electric vehicles and plug-in hybrids. BYD has already shipped more cars this year than Ford and Honda, and it is fast coming for Volkswagen, GM, and Toyota’s crowns as the world’s three largest automakers. Earlier this year, Rob and Jesse spoke with Ilaria Mazzocco , a senior fellow with the Trustee Chair in Chinese Business and Economics at the Center for Strategic and Intern...
