Originally published February 17, 2016. Updated September 28, 2026.
Clean energy investment hit $2.2 trillion worldwide in 2025, almost twice the $1.1 trillion spent on fossil fuels that same year, according to the International Energy Agency. BloombergNEF counts a different set of technologies and arrives at $2.3 trillion for what it calls energy transition investment. Both totals are accurate. They measure different things, and mixing them into one bigger number would be wrong.
That split already shapes which power plants get built near you, and what ends up on your utility bill for the next decade.
The world put $2.2 trillion into clean energy in 2025
Total global energy investment reached $3.3 trillion in 2025, and clean energy made up two-thirds of it, per the IEA. Electricity investment, the power plants and grids that generate and move electricity, pulled in $1.5 trillion in 2025, 50% higher than combined fossil fuel investment. That’s the spending that keeps your lights on through a heat wave and your EV charging overnight.
BloombergNEF’s $2.3 trillion figure grew 8% from 2024. Part of the gap between the two trackers is electric vehicles. BNEF’s total folds in $893 billion in electrified transport investment, up 21% year over year, a category the IEA’s energy framework doesn’t size the same way. Neither total is a substitute for the other.
Solar takes the biggest share, but grids and batteries are catching up
Solar is the single largest line item in the IEA’s entire $3.3 trillion tally, $450 billion in 2025, more than any other technology or fuel. If you’ve followed how fast solar capacity has grown or what’s happening with wind power, that won’t surprise you. What’s less obvious is how much of the rest of the money bypasses power plants entirely.
Grids and nuclear show the clearest split between the two trackers.
| Category | IEA (2025) | BNEF (2025) |
|---|---|---|
| Power grids | $400 billion | $483 billion |
| Nuclear | $70 billion | $36 billion |
Source: IEA, World Energy Investment 2025 and BNEF, Energy Transition Investment Trends 2026. The two columns measure the same categories with different boundaries, so read them as separate estimates.
The scope differences show up close to home too. US distributed solar and battery storage spending hit $12 billion in the second quarter of 2026, up 128% from the prior quarter and a record. Residential battery installations topped residential solar installations for a second straight quarter, per the same tracker. A lot of that spending starts as an ordinary quote from a local installer, the same kind you’d get pricing out a battery for your own house.
China spends the most, and its renewables total fell for the first time since 2013
China drew almost a third of the world’s clean energy investment in 2025, up from a quarter ten years earlier, per the IEA. In dollar terms, BNEF put China’s total energy-transition spending at $800 billion in 2025.
A share of that spending is probably sitting inside your retirement account too, if it holds a broad emerging-markets fund.
The scale comes with a wrinkle. BNEF recorded China’s first decline in renewable-specific investment since 2013 in 2025, even as its overall energy-transition total kept climbing. Renewable-energy investment fell worldwide too, $690 billion, down 9.5% year over year. A rising total and a falling renewables slice can both be true at once when enough of the growth comes from elsewhere, in this case electric vehicles and grids.
The US pulled back on clean energy funding after the 2025 tax law
The One Big Beautiful Bill Act, the 2025 US tax law, rolled back most federal clean-energy tax credits and manufacturing incentives. The 30% federal tax credit for home solar ended on December 31, 2025. Price out a home solar or battery system, and you’re paying full freight where a year ago you’d have gotten close to a third off.
The effects are already in the data. US clean-energy manufacturing investment fell 24% from a year earlier, to $8 billion, in the second quarter of 2026, though that broke a six-quarter streak of quarterly declines with a 4% rise from the first quarter. Total US clean-energy and transportation investment hit $75 billion that quarter, up 22% from the prior quarter and the second-highest quarter on record, driven by consumer and retail demand, not new factory construction.
Rhodium Group has also modeled how much future investment the law puts at risk, $522 billion in announced clean-energy investment, cumulative from mid-2022 through the first quarter of 2025. That’s a projection of what could still unravel, separate from the year-over-year manufacturing pullback already visible above. Meanwhile, the Department of Energy’s Loan Programs Office now operates as the Office of Energy Dominance Financing.
Cleantech venture capital keeps shrinking, but public markets are picking up the slack
If you’re trying to figure out whether venture capital for climate startups is growing or shrinking, both answers are true depending on which door you count. Climate-tech equity, combining early-stage and growth funding with public-market listings and secondary offerings, hit $77.3 billion in 2025. Pure early-stage venture funding, on its own, fell for a third straight year. Public listings and secondary share sales did more of the lifting than new venture rounds.
Crowdfunding platforms for clean-energy startups aren’t part of that total. BNEF splits it into two buckets instead, private funding through venture and growth investors, and public markets through listings and secondary offerings. Hold shares in a clean-energy fund inside a retirement account, and more of that money is probably moving through the public-market bucket than the venture one.
Green bonds passed $8 trillion, with one question still unanswered
Cumulative global green and sustainability-linked bond issuance passed $8.1 trillion by the end of 2025, including $6.8 trillion that met the Climate Bonds Initiative’s own alignment criteria for how the money gets used. It’s the kind of debt that can end up inside a city’s infrastructure fund or your own retirement account.
That market barely existed a decade ago. A 2016 analysis by Cian O’Donovan, then a researcher with the University of Sussex’s Sussex Energy Group, was still describing clean-energy finance as mostly venture capital and bank lending, since state financiers such as the China Development Bank were too hard to track.
If you came here wondering whether institutions like the World Bank are still funding fossil fuel projects alongside clean ones, and in what proportion, that’s a fair question with no clean 2026 answer yet. A breakdown specific enough to cite hasn’t turned up. The green bond total above is the clearest public-finance number available on that side of clean-energy money.
The battery record landed after the solar credit expired
Residential battery spending set its quarterly record in the second quarter of 2026, the same quarter the federal solar credit disappeared. The spending didn’t pause to wait and see.
