In my city, we have very strict protocols for any new building that is added to the current grid. This is because our city has very firm laws that work to help our entire county be green and better to the environment. Every building that is constructed or even a renovation if it involves gutting more than 80% of the building has to be built to LEED certification standards. LEED is no easy feat to achieve; this requires the building to have a number of energy efficiency projects included in the overall design. The building should work to use as many recycled materials or otherwise conflict free materials as much as possible, with the required number according to the energy efficiency projects team at a minimum of 50%. In addition to this, the building must have its utility systems set according to LEED standards, which requires efforts to be made that work with the environment rather than against. One such standard aspect of commercial building energy conservation is a water recycling system. This system works to harvest rainwater every day, which is then used to flush toilets. By bringing in grey water to complete these tasks, the building uses far less fresh water as a result. A water recycling system can also be used to harvest grey water and turn it into potable water, which means water that is safe to drink. These energy efficiency projects add a large price tag to a commercial building, but they are absolutely worth the cost as they both save money and save the environment.