Once a turbine is going, it can take hours to slow back down, and that could explain why they are turning without wind. They could also be drawing power from the grid to rotate the blades during cold periods of the year to prevent the blades and gears freezing up.
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It's measured in watts (W) and reflects the panel's “nameplate” peak output (often listed as Pmax on the spec sheet). For example, a 400 W panel is rated to produce up to 400 watts under Standard Test Conditions (STC), not necessarily on your roof year-round.
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Well, here's the shocker: substation cabinets physically cannot store energy. These metal enclosures primarily house circuit breakers, transformers, and monitoring equipment - components designed for power distribution, not storage.
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Solar energy made for an alternative but early solar generators were not designed for the ruggedness and portability one needed in extreme environmental conditions.
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