Solar Resource Website Solar Calculator has developed an online tool that helps easily calculate for users that want to evaluate the cost, savings and solar output from any new solar panel or battery installation. 

Based on selections made by the user, the calculator displays results for the generation of solar power, electricity powered directly from solar panels and batteries, excess power exported to the grid, system cost, annual savings, payback period, ROI, lifetime savings and the reduction in greenhouse gas emissions as a result of the system’s clean energy output. Users are able to add a battery to their desired solar panel system, opt to finance their system and factor in panel performance elements like shading.