The government focuses on providing and promoting renewable forms of energy to reduce the huge stress there is on the power of fuel-based sources which are not only non-renewable and can get exhausted if not kept in check, also cause pollution.
Windows let in wind, sunlight and other forms of natural energy which help in reducing your electricity bill (less usage of lights, fans, etc) and also open endless opportunities of using eco-friendly green appliances like solar cookers, etc.
The cost of installation and repairing of windows is quite high and many can’t afford it. Here is where and why the government steps in by providing government grants for new windows and free window replacement for low-income families.