1. Try to merge same work in one building, it will help government to internal communication and will help to save money.
2. Use low voltage electic bulb (light) the high voltage electric light should be replaced with low voltage bulb. Reduce number of electric light. Redisign the light it will save trillions of money. Redesign the street (road) lights, which help govt to save money. It also reduce to global warming.
3. Give and control of colling system or heating system in to individual room (office). so we will save bunch of money.