Optimistic Outlook · 2026-05-26 · 5 min
Picture this: a factory that makes its own power, stores it, and has enough left over to sell back to the grid. It may sound like a thought experiment, but Siemens is running one right now in Wendell, North Carolina, at one of its industrial factories. Here's the gist. Solar panels on top of a carport feed a battery roughly the size of a small building, which lets the whole facility run on renewables, keep operations carbon-neutral, and yes, push excess power back into the grid for other people to use. The setup is a 1.25-megawatt microgrid paired with 3.9 megawatt-hours of battery storage, and it's one of the largest industrial solar plus storage systems on Duke Energy's distribution network in the Carolinas. When the grid goes down, the factory keeps humming. When the sun is shining and production is light, the surplus goes out the door and into the neighborhood. The carport doubles as covered parking with EV chargers tied into the same system, so EVs get charged on the factory's own solar.
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