How to get 3x more power without new wind farms?
Why & how this startup is buying tired wind farms and giving them a second life.
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Hey there! 👋
Skander here.
Every month, billions flow into climate companies. Headlines tell you the funding number but not the story. Who are these companies? What problem are they solving? Are they actually cutting emissions? And should you work with them, join them, or compete against them?
That’s where our breakdowns come in. We take one fresh funding deal and unpack it Climate Drift Style: fast, high-signal, and skimmable.
We cover:
🌊 The Climate Drift Take
🚀 1-Sentence Pitch
⚡ Company Description
💸 Funding Raised
❓ Problem
🌍 Market
🌱 Climate Impact & Potential
🧭 Strategy & Differentiation
📈 Progress
⚔️ Competition
🫂 Team
🎙️ Interviews
🧑💼 Roles & Hiring
🤝 Key Investors & Partners
This week we are diving into 3 companies: NeXtWind in Germany, Chestnut Carbon in the US and Sun King in Kenya.
Free readers get the basics. Community members get the full picture: strategy & differentiation, competition, curated interviews, hiring intel, plus our take on what’s working & what’s not.
🌊 Let’s dive in
PS: This Thursday we’ll walk through the latest $5B+ in climate funding in our community session on Follow the Money. Join us Thursday at 9am PST | 18:00 CEST.
This breakdown grew out of a session with the drifties in our newest accelerator cohort. Join our next cohort and work with us:
Company Breakdown: NeXtWind
Why & how this startup is buying tired wind farms and giving them a second life.
🌊 The Climate Drift Take
We desperately need more onshore wind: it’s the cheap clean power, but new builds have become politically toxic, slow to built (#supplychain), and stuck in permitting hell.
The best sites are already occupied, which makes repowering the real unlock: Swap old turbines for new and you get 3× the output. Perhaps it isn’t glamorous but it is a high-leverage.
NeXtWind’s bet is simple: fix what’s broken, scale what works.
Bottlenecks are on the execution side: Capital, operations, project management. Which is why NeXtWind’s $1.6 billion debt deal is interesting.
🚀 1 Sentence Pitch
NeXtWind is Germany's leading wind energy repowering company that acquires aging wind farms and replaces outdated turbines with modern, more efficient models to significantly increase energy output while reducing CO2 emissions.
⚡ Company Description
Founded in 2020, Nextwind focuses on “repowering” older wind farms nearing end-of-life subsidy, replacing outdated turbines with efficient new models. This approach triples the energy yield without using additional land and leverages local acceptance of existing wind sites. Nextwind has offices in Berlin and London and has quickly become a leading independent player in Germany’s wind sector. It currently operates 37 onshore wind farms (~450 MW) and plans to reach 3 GW capacity by 2028.
💸 Funding Raised
Total Funding: Over $750 million equity raised and €1.4 billion debt secured to date, enabling rapid expansion.
Recent Round (2023): Backed by Sandbrook Capital (U.S.) and Canadian pension funds PSP Investments and IMCO, Nextwind raised up to $750 million in August 2023. This was one of Germany’s largest climate-tech financings, far exceeding typical startup rounds, reflecting the capital-intensive nature of buying and upgrading wind farms.
Latest Financing (2025): In July 2025, Nextwind secured €1.4 billion in debt financing (with potential for €1.3 billion more) led by Deutsche Bank, ING, and LBBW
❓ Problem
Nextwind addresses the urgent need to upgrade Germany’s aging wind infrastructure. Germany is Europe’s largest onshore wind market (~58 GW installed), but roughly 30% of turbines (13,000 units) are over 15 years old and due for replacement with more efficient models. New wind farm build-out has been slower than needed to meet climate targets, so repowering existing sites is critical to quickly increase renewable generation.
🌍 Market
Germany is Europe's largest wind energy market with 73 GW installed capacity, targeting 115 GW onshore by 2030. Wind energy accounts for 25% of Germany's electricity consumption. Given that many prime wind locations are already in use and land is scarce, repowering is one of the fastest ways to add green capacity. The repowering market represents approximately 15 GW potential, with 37% of new wind capacity in 2024 coming from repowering projects.
🌱 Climate Impact & Potential
NeXtWind's current 1.4 GW repowering capacity can supply approximately 1 million households annually with green electricity, equivalent to replacing 1.5 nuclear reactor units. Each repowered wind farm produces 4x more energy than before, with modern turbines achieving significantly higher CO2 displacement rates of 0.4-0.8 tCO2/MWh.
