# Vinod Khosla advocates for linear generators to power AI data centers > Source: > Published: 2026-06-30 13:06:24+00:00 # Vinod Khosla advocates for linear generators to power AI data centers The veteran VC is betting that AI's massive energy appetite can't wait for a grid that was never built to handle it A single large AI data center now consumes as much electricity as a city of 80,000 people. Vinod Khosla, the billionaire venture capitalist behind Sun Microsystems, thinks the answer isn’t fixing the grid. It’s bypassing it entirely. Khosla has been backing Mainspring Energy for over a decade, pouring money into the company’s linear generator technology, which produces power on-site using a flameless chemical reaction. The pitch is simple: if the grid can’t get power to your data center fast enough, generate it yourself. ## The grid bottleneck is staggering More than 2,600 gigawatts of proposed energy projects are currently waiting in interconnection queues to plug into the grid. The grid’s total installed capacity is less than half that number. In English: there’s more than twice as much demand waiting in line as the entire system can currently handle. Mainspring’s solution sidesteps the queue altogether. Its linear generators can be deployed on-site at data centers, running on a flexible fuel mix that includes natural gas, hydrogen, ammonia, and biogas. No waiting for utility approvals. No multi-year construction timelines for transmission lines. The technology works through a flameless reaction of air and fuel, which Mainspring says makes it cleaner and more efficient than traditional combustion-based generators. The fuel flexibility is particularly notable because it creates a pathway to cleaner power over time, as hydrogen and biogas availability scales up. ## The money trail tells the story Mainspring Energy closed a $258 million Series F funding round in April 2025. General Catalyst led the round, with participation from the Amazon Climate Pledge Fund and Khosla Ventures. Khosla Ventures has been involved since 2010, making this a 15-year bet on distributed energy generation. Mainspring has raised approximately $850 million in total funding to date. Amazon’s involvement through its Climate Pledge Fund is worth noting separately. The company is one of the world’s largest cloud computing providers through AWS, and its data center footprint is expanding rapidly. Investing in Mainspring while simultaneously needing the exact type of power solution Mainspring offers is a classic case of strategic venture capital, part financial bet, part supply chain insurance. ## Why crypto investors should pay attention Bitcoin mining and AI training are functionally competing for the same scarce resource: cheap, abundant, reliable electricity. As AI data centers vacuum up available grid capacity and drive energy prices higher in key markets, crypto miners face a squeeze. Some are already pivoting to AI hosting for exactly this reason. The risk, of course, is that on-site generation running primarily on natural gas doesn’t exactly scream sustainability, regardless of how flameless the reaction is. Hydrogen readiness is the hedge, but commercially viable green hydrogen at scale remains more aspiration than reality. **Disclosure:** This article was edited by Editorial Team. For more information on how we create and review content, see our [Editorial Policy](https://cryptobriefing.com/editorial-policy/).