To make AI data centers sustainable with solar and batteries costs about 10% of the price of the base hardware. The AI hype is still insane but we can have a little AI.
Man I want your supplier for batteries and panels tbh.
A single DGX B300 that could run Kimi for a few concurrent users, uses 14 kW. Costs about 500k. Assuming you live far enough from the equator to have seasons, you’ll have about 8 hours of daytime at the worst points of the year (less at my latitude for an example, we get ~6 hour days in the dead of winter, with sun angles below 10 degrees and sunshine available… not every week)
Even in a slightly less extreme location, You’d be looking at roughly a 100 kW array to fill the battery and power that one server reliably like when there’s clouds, about 300 kWh battery capacity to get through long nights. Easily 6 figures total cost, maybe 20-40% of the server itself. This assumes no electricity used for cooling, so it’s very much back of the envelope math, reality could be much worse or a tiny bit better depending on your latitude.
Uh you’re right, you need about 4x so 270 kWh over the day, which requires about 270 / 6 * 24 = ~1000kW. With about 175€/kWp panels that is another 175 thousand plus installation. And something like 4000m². But that is all the energy costs for 30 years up front. The bigger constraint is the land use then.
To make AI data centers sustainable with solar and batteries costs about 10% of the price of the base hardware. The AI hype is still insane but we can have a little AI.
Man I want your supplier for batteries and panels tbh.
A single DGX B300 that could run Kimi for a few concurrent users, uses 14 kW. Costs about 500k. Assuming you live far enough from the equator to have seasons, you’ll have about 8 hours of daytime at the worst points of the year (less at my latitude for an example, we get ~6 hour days in the dead of winter, with sun angles below 10 degrees and sunshine available… not every week)
Even in a slightly less extreme location, You’d be looking at roughly a 100 kW array to fill the battery and power that one server reliably like when there’s clouds, about 300 kWh battery capacity to get through long nights. Easily 6 figures total cost, maybe 20-40% of the server itself. This assumes no electricity used for cooling, so it’s very much back of the envelope math, reality could be much worse or a tiny bit better depending on your latitude.
Huh? 1400 TDP = 1.4 kW. This is official I believe.
And maybe my sources are off but: “As of July 2026, a single B300 GPU purchased outright runs about $53,000 (Spheron Network, July 5, 2026)” https://tech-insider.org/nvidia-blackwell-gpu-pricing/
Uh you’re right, you need about 4x so 270 kWh over the day, which requires about 270 / 6 * 24 = ~1000kW. With about 175€/kWp panels that is another 175 thousand plus installation. And something like 4000m². But that is all the energy costs for 30 years up front. The bigger constraint is the land use then.