Views Why green buildings matter. Hint: There are many benefits for a homebuyer Updated : March 07, 2019 01:35 PM IST Green buildings result in savings of 15-25 percent on power bills through maximization of natural light, and use of solar heating systems and energy-efficient walls and roofs. Low-flow water fixtures and STP treated water can reduce water bills by 10-20% Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.