Beautifully sleek but invisible from the ground, this highly contemporary Bethesda home now has solar. Totaling 20.8 kW, this flat roof installation will cover 95% of these homeowners’ energy needs, bringing them a net savings of over $318,000 during the system’s first 30 years of operation. Wow! Assuming typical usage as before, their average utility bill is now projected to be $8. QCELLS 400 Watt solar panels, enphase IQ8+ microinverters. Omgroofing attachments and Aerocompact racking.