Many people consider installing solar panels to live more sustainably, save money, or both. Homeowners consider a number of factors, including which type of solar panel might work best for them, when deciding whether the investment is worth it.

Now, an online software tool from the National Institute of Standards and Technology (NIST) can help answer homeowners’ questions. [PV]2 analyses the economic and environmental impacts of rooftop solar technology. The tool helps homeowners and installers evaluate rooftop PV systems.