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With little more than your electric bill, you can estimate the pv system size that's right for you (note: you need to have Microsoft Excel to open this file).
Under current SDG&E rates, installing too many solar panels could mean that you will give away free electricity to SDG&E. With this calculator, you determine how much photo-voltaic capacity you need to hit the "sweet spot" in SDG&E's complicated rates. All you need is your electric bills for the last 12 months (they're online if you don't have them) to determine what size system is right for you. |