The startup emerged from stealth in June to build power plants for data centers at a cost of $100 per megawatt hour. Longmier and his co-founder, Sara Spangelo, had settled on solar plus batteries as the cheapest option that's the fastest to deploy. Solar panels power the load during the day and charge the batteries, which discharge at night and on cloudy days to keep the data center operating round the clock. Ambrosia is also beginning work on its first commercial power plant in West Texas later this year, Longmier said. The facility will pair 300 megawatts of solar panels with 660 megawatt-hours of batteries to deliver 30 megawatts of continuous power, with a goal of 99.3% uptime. Even with 'overbuilding' solar and batteries to deliver continuous uptime, Longmier said the company can be profitable at $100 per megawatt-hour, making it competitive with natural gas turbines that many hyperscalers are planning to use to power their data centers. To hit its cost targets, Ambrosia has...
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