I don’t know how to flair this, so I’m tagging it as “Other”
In: Other
2 possibilities – they have a 100% offset system. In this case, they overgenerate electricity during the day, and feed that power into the grid, and at night they buy power from the grid like a normal energy customer. If everyone did their math right during design, the total amount of power they generated will match the total amount of power they used in a year. Of course this requires a connection to the power grid at all times.
Alternatively, they could have a battery bank that gets charged up all day, and drains out overnight. Tesla Power Walls (Li-ion battery bank) are the most likely candidate for smaller operations, but there are other battery systems out there that you can buy. These setups can be totally self sufficient, if there’s enough power generation and storage in the system.
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