Drogue raises $20M for ocean-powered floating data centers
Original: This young startup wants to power floating data centers with the ocean’s heat, and investors are already on board
Why This Matters
Offshore OTEC could sidestep the grid bottleneck throttling AI infrastructure buildout.
Six-month-old startup Drogue raised $20M from XYZ Venture Capital, Toyota Ventures, and others to build floating data centers powered by ocean thermal energy conversion, with a prototype planned for early 2028.
Drogue, a Washington, D.C.-based startup founded just six months ago, has raised $20 million to build floating data centers powered by the ocean's thermal energy. The round includes backing from XYZ Venture Capital, Toyota Ventures, Tamarack Global, Boost VC, and Slow Ventures, among others.
The company's pitch is timing: traditional data center development runs on 8-to-10-year cycles tied to utility negotiations and grid interconnection, while AI compute demand has grown 10x in three years. CEO Sam Sipe, a former U.S. Navy E-2D Hawkeye pilot, wants to cut that timeline dramatically by taking the whole operation offshore.
Drogue's technology relies on ocean thermal energy conversion (OTEC), a concept dating to the 1950s. Warm surface seawater cools the servers, then passes through a heat exchanger to vaporize ammonia—which boils at -28°F—driving a turbine to generate electricity. Cold deep-ocean water (around 39°F) condenses the ammonia back into liquid, completing the cycle.
The first multi-megawatt prototype will be installed on a conventional ship and deployed at sea in early 2028. Longer-term, Drogue plans purpose-built floating platforms resembling offshore oil rigs. The oceans currently absorb an estimated 5.8 million terawatt-hours of additional energy per year due to global warming—roughly 32 times total human energy consumption—giving Drogue plenty of thermal headroom to work with.