www.find-solar.org offers free solar estimators and solar energy calculators for use by solar contractors, installers, and other solar professionals. These solar energy estimators-calculators size and estimate the cost of a solar energy system. Financial analysis is provided to determine the expected financial return of a solar electric, solar thermal (pool or water heating). Utility energy rates together with state, local and federal financial rebates and tax incentives for solar energy systems are included. » Solar Estimator Overview

Please go to www.find-solar.org for a solar energy estimate.