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Firas Saegh
12-29-2013 07:51 AM

PV system consumed energy vs. needed power

Hello PV Experts!We all know the calculation for PV system sizing. We always talk about ENERGY (kWh). Maybe this is due to the idea of net metering. Even when we talk about Off Grid systems... we start with the Needed Energy.

I wonder why don't we just look to the needed POWER. Why should we focus on the consumed energy during a time interval if the instantaneous power cannot be generated to take of or keep the devices running.

Thanks for all your feedback!