Thinking about going solar? This solar calculator uses your electrical consumption data and the location of your residence to estimate how the addition of a solar photovoltaic (PV) system will affect your monthly and annual electricity bils.Once you connect your solar PV system to the grid, you receive credit for electricity you provide to the grid – a system called net energy metering. Your electric rate structure also changes so that you are charged (or credited) differently depending on the time of day. Kilowatt-hours used (or produced) weekdays from 11am-6pm have a higher value than those used (or produced) at other times. This calculator also accounts for these time-of-use (TOU) rates now required for new residential solar installations - and provides a look at how a proposed rate change may affect future bills.
This will allow us to estimate solar production at your exact location.
Before estimating your electricity bills, please answer a few questions. First, enter your climate zone. If you don't know, check here or look at the Electric Service section of your SDG&E bill.
Second, how do you heat your home? If you have a natural gas-burning furnace or you’re not sure, select “natural gas”.
Finally, do you receive any discounts on your bill? Discounts available to SDG&E customers include the California Alternate Rates for Energy (CARE) Program and the Family Electric Rate Assistance (FERA) Program.
In the above calculations, we have chosen a solar PV system size that produces 100% of your annual electricity consumption. We have also assumed optimal tilt and azimuth for your system. If you have more precise information about your site (for example, from a solar contractor’s bid), you can recalculate your estimated bill by entering this information in the boxes below. Otherwise, just skip to the next section.
You may be wondering how your bills would change if the electric rate structure changes. We can’t predict the future, but we can share a possible scenario with you.
To calculate what your bill would be if the peak billing period was shifted from 11a.m.-6p.m. to 2p.m.-8p.m., click "Recalculate!"