Energy and Green Technologies
Photovoltaic Windows in a Bucharest Apartment Cover Around 47% of Hot Water Needs
A home experiment lasting more than two years demonstrated the possibility of using semitransparent photovoltaic glass to heat water directly with direct current, without a battery or solar inverter. The system covered between 43.7% and 46.7% of household hot-water energy, with potential additional benefits in reducing water waste and solar heat gain.
2026-08-25