The primary intent of this engineering design is to provide risk reduction to the AFRC’s operational capability by incorporating resiliency, redundancy, and assured access to alternate energy sources at the building. This BTMMG with a main controller will utilize the following energy sources: solar arrays (ground mount and canopy), battery storage, existing 750kW diesel generator, and a second natural gas 750kW generator. This system will not connect to the commercial grid (not to be net metered), must be able to provide the critical energy needs for a minimum of 14 days off the commercial electric grid (islanded mode). The secondary intent is to use the solar/battery sources to peak load shave and achieve a level of net zero capability during non-emergency operations resulting in lowered electrical cost savings. The Ohio Army National Guard has hired the Ohio State University to provide a Concept Audit Report (CAR) to refine the scope of this project with actual data supported systems. The CAR utilized modeling software, historical electrical load data, critical mission requirements, solar photo voltaic, battery storage, generator power sources, islanding requirements, and multiple scenarios to develop courses of action to provide a basis of design. This CAR also provided capital costs, O&M costs, Lifetime Costs while providing life cycle cost analysis identifying return on investment, simple payback, SIR and energy savings.
