But replacing or supplementing your current water heater with a solar-powered water heater can, too. Solar water heaters harness the sun's energy to provide a sustainable solution for heating ...

German startup Nexol Photovolthermic has released a new hybrid solar water heater for residential applications ... It can also be connected to a power output of up to 2.5 kW at 300 V (DC).

They’re powered by gas or electricity ... powerful options and give you precise control over the water temperature compared to solar heaters. Electricity is also usually more expensive than ...