Removing reliance on non-renewable energy sources through solar water heaters is a promising and cost-effective approach to mitigate the impact of over-reliance on non-renewable resources. The growing concern about environmental degradation and depleting energy sources has directed the world towards energy-efficient solutions.

Solar water heaters, a type of solar thermal energy, use natural heat to heat water for various purposes including industrial applications. This energy-efficient solution is considered an attractive solution for global energy challenges as it requires increased efficiency, can provide steam during on-site generation, and can be easily scaled up or down in terms of power and capacity.

A well-designed thermal energy system consists of a heat exchanger a storage tank a circulating pump and a heat exchanger. The solar collector is the key component of the system, absorbing and converting solar radiation into heat energy. The solar water heater works in two phases: the absorption cycle and the rejection phase. During the heating phase, the key component heats the water in the circulating pump, and in the rejection phase, the hot water is pumped into the household for actual use. Conventional absorption heat pump water heaters also improve performance by using a second hotter water to heat the system whenever possible.

Implementing massive solar water heater projects can significantly reduce the global electric power demand. Data suggests that, for every 1.2 MW of solar water heater capacity installed, the demand for grid energy from utility companies is decreased by at least 1.2-1.5 MW.

In emerging markets, such energy-efficient technologies can save households a significant amount of money on their utility bills.

It is estimated that widespread deployment of solar water heaters could reduce energy usage by 12-18% by 2030, saving over $1.1 trillion in utility bill savings.

With such impactful advantages associated with solar water heaters, regulators worldwide should prioritize and invest substantially in developing solar water heater technologies, providing incentives for deployment and massive deployments.

However, current industries are lacking the growth rate on renewable energy sources, driven primarily by the development and advertising of solar photovoltaic (PV) technology. Governments must therefore provide immediate attention and incentives to energy-efficient technologies, besides focusing on streamlining administrative burdens for industry leaders to step into the industrial energy markets.

Increasing the demand for solar water heaters will also increase career advancement worldwide, and push down salaries in renewable energy industries while raising profit margin expectations among the companies in this area. So the deployment of solar water heater technologies will undoubtedly prove crucial for saving electricity consumption and making a significant impact in solving one of our most enduring energy challenges.