PV Gap

Shawn Said:

Can solar power be used to power a building with about 4 airconditioners?

We Answered:

You're going to need a REALLY big solar panel. A reasonable rule of thumb for AC loads is 1 kW per ton of cooling capacity. (1-ton is equal to 12,000 BTU/hr).

A typical residential home might have a 3 to 5 ton AC unit. If you've got four 5 ton AC units, that means you need to produce 20 kW of solar power.

Keep in mind that these values are just to keep the AC running. The compressor's starting inrush is roughly 5 times the running load. Fortunately you only have to start one AC unit at a time.

I doubt you'll be able to sever ties with with utility, but perhaps you can make a dent in your AC bill by reducing your load via the solar equipment.