Calculators
The links below provide calculators to figure out your current energy usage. By knowing your current electrical needs you can size your solar energy system.
Energy Use Calculator For Appliances
Clean Power Estimator™ California
The program provides California residential and commercial electric customers a personalized estimate of the costs and benefits of investing in a photovoltaic (PV) solar or small wind electric generation system.
PVWATTS - calculates electrical energy produced by a grid-connected photovoltaic (PV) system.
My Solar Estimator (for all states) This Solar Estimator is meant only to give you an idea of price, savings and system size.The results are based upon many assumptions and the limited data you will enter.
CSI (California Solar Initiative) - EPBB Calculator (Expected Performance Based Buy down)
Solar Water Heating Calculator Use this calculator to explore the energy usage of your water heater, and to estimate whether a solar water heater could save you money.
