Abstract: A method for providing energy to a building using utility-compatible distributed generation equipment. In accordance with the method, a building owner leases space in a building to an energy provider. The energy provider installs or has installed utility-compatible distributed generation equipment in the leased space at no capital cost to the building owner, wherein the distributed generation equipment is capable of providing electric energy or both electric and thermal energy to the building. The energy provider also installs or has installed a gas delivery system that is capable of delivering natural gas from a gas utility interface to the distributed generation equipment in a manner that meets the gas pressure and volume requirements of the distributed generation equipment. The building owner uses the energy provided by the distributed generation equipment on a first use basis.