Electricity generated from the system is a saving, as this amount of electricity is not going to be purchased from the utility company (or, if it’s a grid-connected system, electricity can be sold back to the utility company). How do you compute the annual dollar amount of the saving? Do the panels decline in efficiency each year?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Electricity generated from the system is a saving, as this amount of electricity is not going to be purchased from the utility company (or, if it’s a grid-connected system, electricity can be sold back to the utility company). How do you compute the annual dollar amount of the saving? Do the panels decline in efficiency each year?

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