Nexol Photovolthermic AG has developed a new hybrid solar water heater for residential use, offering 1.5 kW of heating output and sizes ranging from 80 to 300 liters.

Essentially, it allows the water heater to get much hotter during times when solar energy is available, and lets it drop to lower values before running the heater on utility electricity during ...

A greener option is a solar water heater that’s powered by roof panels ... portable freezer that hooks up to a 12-volt DC current car battery or your solar, wind or hydroelectric system ...

The DC Sustainable Energy Utility (DCSEU), in partnership with the District Department of Energy and Environment (DOEE), has ...

“The AC/DC dual heating element utilizes solar energy ... pump for pressurization,” the manufacturer added. ”The solar water tank can be easily installed inside the house and is not affected ...

To use this small greenhouse heater as part of a solar heating system, you’ll need a PV panel array and an inverter to convert direct current (DC ... and low-pressure water jets.