US power emissions rose 4% last year — in the middle of a clean-energy boom

Climate & Energy 3 min 80 sources

America added more clean power than ever and still put out more carbon, because demand hit a record and coal filled the gap. The number that fell and the number that rose are both true.

Key takeaways

US power-sector carbon rose 4% in 2025 even during a clean-energy boom, because record demand — from air conditioning, data centres, and factories — was met largely by burning more coal.
Demand is set to keep climbing about 4% a year through 2030, and utilities are on track to add far less new capacity than that growth needs.
The gap is a choice, not a law: in Europe, where clean power grew faster than demand, solar became the biggest single electricity source and total emissions fell.

America’s power grid got cleaner per unit last year and dirtier in total at the same time. Carbon dioxide from the US electric power sector rose 4% in 2025 — about 58 million metric tons — even as wind, solar, and batteries kept pouring onto the grid [1]. The reason is not that clean energy failed. It’s that the country used more electricity than ever, and the extra came largely from coal.

The record that got buried

The US Energy Information Administration — the government’s energy statistics office — reported the rise on Tuesday [1]. Net electricity generation grew 3%, or 12 terawatt-hours, passing 2024’s all-time high [1]. A hot summer drove record demand for air conditioning, and data centres and factories pulled more power on top of that [1].

Something had to meet that demand. Coal did. Coal-fired generation jumped 13%, adding 78 million tons of carbon on its own; gas generation actually fell 4% [1]. So even with clean power growing, the grid leaned back on its dirtiest fuel to cover the surge — and the total went up.

Why the pie is growing so fast

The demand story is the one to watch. Bank of America analysts project the US will need more than 230 gigawatts of new generating capacity over the next five years, while regulated utilities are on track to add only about 93 gigawatts — a gap of more than 100 gigawatts [32]. Data centres alone could add roughly 125 gigawatts of load, pushing overall electricity demand growth to about 4% a year through 2030 [32].

There’s a quieter driver too. Cooling — plain air conditioning — is a bigger and faster-growing electricity load than the AI boom in some reads; one Reuters commentary argues AC’s surge is the more consequential of the two [29]. Either way, the load is climbing.

Households feel it in the bill. US retail electricity rates have been rising faster than inflation, and regulators approved 64% of the dollar value of utilities’ rate-increase requests over the past five years, according to a Lawrence Berkeley National Laboratory report [80]. More demand, tighter supply, higher prices.

Clean is still the cheapest new power — and the US is easing off it

Per unit built, renewables remain the cheapest source of new electricity, according to Lazard’s closely watched annual cost benchmark — though even their floor has ticked up, as higher borrowing costs and grid-connection delays add to the price of the money and the wires [22]. (LCOE, the measure Lazard uses, is the lifetime cost of a plant divided by all the power it produces — cost per unit over its whole life.)

US policy is nonetheless tilting the other way. The White House cited national security to move against offshore wind development [7]. Carmakers are pulling back in step: GM is shifting focus back to petrol vehicles with essentially no new Chevrolet or Cadillac electric models planned [5], and Honda is discontinuing the Prologue, its only EV sold in the US [8]. Slower clean build-out, against faster-growing demand, points the total the wrong way.

The rest of the world shows the other outcome

It doesn’t have to go like this — and elsewhere it isn’t. In Europe, solar generated a record 52 terawatt-hours in June and supplied 25% of all EU electricity, the first time it was the bloc’s single largest source for a month, ahead of nuclear, gas, and wind, per the think tank Ember [37]. When clean grows faster than demand, the total falls.

Even the build-out carries caveats worth naming. A report found China’s giant renewable “megabases” — vast solar and wind farms in remote deserts — still lean on long-distance transmission lines that also carry heavy coal power [27]. Making clean electricity and delivering only clean electricity are not the same thing. The transition is real, uneven, and — this year, in the US — running behind the demand it has to outrun.

02 · Lesson · why it matters

The grid can get cleaner and dirtier at the same time

Pollution is a rate multiplied by a total. Clean energy lowers the rate — but if the total grows faster, the pollution still climbs.

Two true numbers, pointing opposite ways

Here is the fact that trips people up. Last year the US built more clean power than ever, and carbon from its power plants still went up 4%.

Both halves are real. Each unit of electricity got a little cleaner. And the country put out more carbon in total. Neither number is a lie. They just answer different questions — and this year they pointed opposite ways.

Most arguments about energy are really arguments about which of those two numbers counts. It’s worth learning to hold both.

What the total is actually made of

Think of the carbon from a power grid as a simple multiplication. How dirty is each unit of electricity? Times how many units do we use? That product is the total.

Clean energy works on the first number. Every wind turbine and solar panel lowers how dirty the average unit is. That number — call it the rate — has been falling for years, and it fell again last year.

But nothing on that side touches the second number. How much electricity a country uses is set by air conditioners, factories, and data centres — not by how it’s generated. And last year that number jumped. A hot summer, a data-centre building spree, more manufacturing. The pie grew about 3%.

When the pie grows faster than the clean slice, the leftover has to come from somewhere. It came from coal. Coal generation rose 13%. So each unit got cleaner, and the total got dirtier, in the same twelve months.

A rate and a level are not the same victory

This is the pattern worth carrying, and it runs far past power grids.

A rate is a per-unit number: emissions per unit, calories per serving, crime per thousand people, cost per mile. A level is the whole sum: total tons, total spending, total anything.

You can improve the rate and lose the level. Cars got far more fuel-efficient over decades — and total fuel burned still rose, because people drove more and bought heavier vehicles. A factory can cut waste per item and throw away more, because it makes far more items. The ratio got better; the pile got bigger.

It cuts the other way too. A number can look like failure as a rate and be fine as a level, or the reverse. The trick is always to ask: is this a per-unit number or a total? Because the person showing it to you has usually picked the one that tells the story they want.

The demand nobody counts as their own

Here’s the part that’s easy to miss, because it doesn’t wear a villain’s face.

That growing total is not some distant industry’s doing. It’s the second number, and we’re all inside it. The chatbot query that runs in a data centre. The house kept a few degrees cooler through a record-hot summer. The new factory job. Each is a small piece of the demand that outran the clean build-out. No single one is wrong. Added up, they are the reason the total rose.

That’s not a scolding — it’s just the arithmetic being honest about who it includes. The reader isn’t watching this from outside it. The load is partly ours.

The gap is a choice, not a law

The comforting thing about a multiplication is that either number can move. Europe shows the other result. There, solar just became the single biggest source of electricity for a month — clean power grew faster than demand did, and the total came down.

Nothing forces the American outcome. It happened because demand climbed about 4% a year while the new clean supply came in slower — partly by policy, as offshore wind stalled and carmakers backed away from electric models. Change the pace of either number and the product changes. The physics doesn’t pick a side; the speed does.

What a single number hides

So when someone tells you the grid got cleaner, they’re right. When someone tells you it got dirtier, they’re also right. One is talking about the rate, the other about the level, and both are reading the same year honestly.

That’s the humbling part. Almost every headline about progress — on energy, on health, on crime, on cost — is quietly a choice between a per-unit number and a total, and the two can drift apart for years. Knowing which one you’re being shown, and which one the other is, is most of the work. The single number that settles the argument usually isn’t hiding the truth. It’s showing you one true half and trusting you not to ask about the other.

03 · Lab · your turn

Run the Grid

Rehearse how total pollution is a rate times a total — cleaner per unit can still mean dirtier overall when demand outgrows the clean build.

04 · Hope · carry this

Nothing in the arithmetic forces this year's result: in the same twelve months America's total rose, Europe's fell — because there, clean power simply grew faster than demand. The gap between cleaner and cleaner-overall isn't a wall; it's a question of pace, and pace is something people can change.