Companies like Cala can help homeowners get started on these upgrades. Ready for a new water heater? You can get $1,500 in ...

Expect lower energy bills and a smaller carbon footprint from a solar water heater. The cost model mirrors that of residential solar panel systems-- these are a true investment that will save you ...

Energy-efficiency and clean energy projects like insulation, solar, and heat pumps can bring you thousands in federal and ...

Nexol Photovolthermic AG has developed a new hybrid solar water heater for residential use, offering 1.5 kW of heating output ...