Always buy the panels (no PPA), don't buy storage unless your net metering agreement with the utility is terrible (likely kills the ROI, storage isn't cheap enough yet). Ensure your tax liability is enough to capture the full 30% federal tax credit. Check for state, utility, and SREC benefits in your area. Panels are 25 year warranty, stay away from SolarEdge inverters; their mortality rate has skyrocketed over the last 12-18 months. Paying cash is best, otherwise find the cheapest debt you can find to finance whatever remains after incentives.
Google Sunroof: https://www.google.com/get/sunroof
Always buy the panels (no PPA), don't buy storage unless your net metering agreement with the utility is terrible (likely kills the ROI, storage isn't cheap enough yet). Ensure your tax liability is enough to capture the full 30% federal tax credit. Check for state, utility, and SREC benefits in your area. Panels are 25 year warranty, stay away from SolarEdge inverters; their mortality rate has skyrocketed over the last 12-18 months. Paying cash is best, otherwise find the cheapest debt you can find to finance whatever remains after incentives.