a. Fueled by flowing water, sun, wind, or biogas.
b. Fueled in part or whole by manure or woody (EAB) biomass, optimized for minimal air and other environmental impacts and for energy efficiency and water conservation.
c. Distributing heating/cooling services in a district energy system.
d. Producing combined heat and power; using a microgrid.
e. Energy storage integrated into a renewable energy installation.