Solar Geoengineering Funding Soars: Tech Billionaires Drive 10x Spike

By: Abudu Olalekan

Money pouring into solar geoengineering jumped tenfold since 2018. Behind the surge: a mix of private donors, tech billionaires, and government grants fueling experiments that could alter sunlight itself. Some scientists warn we’re rushing into uncharted territory without clear rules. Protesters argue it distracts from cutting emissions – treating symptoms instead of causes. While research expands, debate heats up over whether tampering with skies is salvation or hubris.

Here’s a twist. Back then, almost nobody backed solar geoengineering. Think tiny amounts – under $6 million in play during 2020. Yet by September of 2025, it had climbed tenfold. Money started flowing where none went before. Sure thing – tenfold returns within five years flat.

A fresh report came out Tuesday, March 10, 2026 – titled Who Funds and Who Pays: the funding of solar geoengineering. Sounds clever, sure. Yet what really grabs attention is the data within.

Picture Earth with a giant sunshade. That idea? It’s called solar geoengineering. Some folks are testing ways to reflect sunlight away using fancy tools. Not fantasy anymore – scientists are already running tests. Costs keep climbing fast now that research is ramping up.

Who ends up paying? Right – tech billionaires, big charities, and the UK government. Over eighty percent flows from just these three. Before 2024, most cash came from private pockets. Then ARIA showed up last year, dropped serious funds, shifted everything.

Money flows into three spots. First, studies get a share – no surprise there. Then projects meant to earn money, since turning things into income streams tends to happen. Public outreach shows up too, oddly bankrolled nearly all by private pockets. Shaping how people see it matters, after all.

Fair to say, the map lights up everywhere. Across the planet, 166 outfits received backing. From the United States, 53 made the list, while Britain brought in 24; others popped up through Europe, down into Africa, across parts of Asia, and through Latin American corners. Yet here’s what sticks – one out of every ten isn’t tied to a university or public lab. That kind of support shapes who gets heard.

Linda Schneider of the Heinrich Böll Stiftung speaks plainly. Her concern? The flood of cash going into solar geoengineering R&D shocks her. A jump in funding by ten times over just two years – hard to ignore. Tech companies are behind most of this surge, so who gains becomes unclear. When big nations act alone on such tools, risks follow for everyone else

Coraina de la Plaza shows up next, speaking for Hands Off Mother Earth Alliance. More blunt than most. To her, the entire effort reeks of deception. While real solutions stall, money floods into solar geoengineering – something she finds deeply troubling. When crisis demands bold moves, this feels like sleight of hand. In her view, these tactics do not fix heat; they hide it, piling fresh dangers atop old ones. A loophole dressed as progress, letting inertia pass for innovation.

Odd how it lines up. Just as news breaks that money poured into solar geoengineering jumped threefold in 2025, more than six hundred scholars and two thousand grassroots organizations have stepped forward. Their demand? A halt to any real-world testing outdoors. Because fairness on a world scale feels out of reach, they argue. Danger outweighs promise, they insist.

Last year’s AMCEN gathering saw African environment chiefs speak up – firm, unshaken. Not interested, they said, in spraying particles high above us to dim sunlight. Instead, such ideas were dismissed completely on the spot. No room for sky-dimming tricks when tackling warming.

Here’s that odd pull again. While cash floods into unproven tech answers, those facing the fallout keep refusing them outright. Still, the funding climbs without pause.