Solar Calculators

My Solar Estimator – Solar-Estimate.org

My Solar Estimator will estimate the size and
calculate the cost to install an energy system –
solar electric (PV), solar hot water or solar pool
heating – for your home or building.

The results are based upon many assumptions and the limited data you will enter. An actual site assessment will be needed to determine the actual costs and benefits of installing a solar energy system.
Go to My Solar Estimator

PV Solar Calculator – PVWatts

Researchers at the National Renewable Energy Laboratory developed PVWatts to permit non-experts to quickly obtain performance estimates for grid-connected PV systems within the United States and its territories.

For a generic estimate of energy and cost calculations in North Carolina visit the PVWatts NC state webpage: PVWatts Solar Calculator