No more hot showers:ERC in move to regulate water heating Commercial properties and domestic users who consume large amounts of hot water in their daily operations will now have to adopt solar water heating systems within the next five years.The Energy Regulatory Commission’s Director General Engineer Kaburu Mwirichia says this is necessary to conform with new regulations instituted by the Commission and now backed by Law.The uptake of solar power in the country continues to increase as technology improves pushing down the cost of implementing solar based energy solutions.