Every January, BloombergNEF drops its Energy Transition Investment Trends report, and every January, the headline number gets bigger. This year's figure of $1.83 trillion invested in clean energy globally during 2025 is impossible to ignore. That's up 25% from $1.47 trillion the year before, and it's now more than double what went into fossil fuels. For the third straight year.
But you know me. I don't trust headline numbers. So I spent the better part of two weeks cross-referencing BNEF's figures with IEA's World Energy Investment report, IRENA's capacity statistics, and individual country-level disclosures. Here's what I found.
Solar is eating everything
Solar PV pulled in $570 billion in 2025, up 27% year-over-year. Let that number sink in: that's more than global defense spending in some estimates. The reason is boringly simple: module costs fell another 15% last year. You can now build a utility-scale solar farm in most markets for about $20 per megawatt-hour. That's cheaper than running an existing coal plant, never mind building a new one.
Wind came in at $390 billion. The story here is offshore: floating turbine technology finally moved from pilot to commercial scale, driving a 35% jump in offshore wind investment specifically. Onshore wind growth was more modest at 12%.
But the standout, and this is the one I would really pay attention to, is battery storage at $155 billion. That's a 48% jump from last year. Grid-scale deployments in the US, China, and Australia drove most of it. Australia alone installed 4.2 GW of storage in 2025, solving their infamous "duck curve" problem in South Australia.
Follow the money to Asia
China invested $680 billion, or 37% of the global total. That's… a lot. To put it in context, that's more than Europe and the US combined. And it is not slowing down since Beijing's 2026 Five-Year Plan update actually increased their clean energy targets.
The US came in second at $320 billion, with the Inflation Reduction Act's tax credits now fully operational. There's a legit question about what happens to those credits if the political winds shift, but for now, the money is flowing.
India was the surprise story of the year: investment jumped 62% to $68 billion. Prime Minister Modi's commitment to 500 GW of non-fossil capacity by 2030 is driving an aggressive deployment schedule, with Rajasthan and Gujarat emerging as major solar hubs.
"The tipping point isn't coming; it's here. Clean energy is now cheaper, faster to deploy, and more bankable than fossil fuels in virtually every market."
- Fatih Birol, IEA Executive Director, in the 2025 World Energy Outlook
What I'm watching next
Two things. First, nuclear, specifically small modular reactors (SMRs). At $48 billion, nuclear is still relatively small, but NuScale's first commercial deployment in Idaho is scheduled for 2027, and a dozen countries have placed orders. If SMRs deliver on their promise of cheap, modular, always-on power, the investment curve will look very different by 2028.
Second, green hydrogen. At $42 billion in 2025 with electrolyzer capacity tripling, it's either the next revolution or the next over-hyped money pit. The data over the next 18 months will tell us which.