An economic and environmental assessment of Second Life Batteries for Residential Rooftop Photovoltaics in the US
Dipti Kamath, Siddharth Shukla, Annick Anctil
Michigan State University, East Lansing, MI, United States

The economic and environmental performance of residential rooftop photovoltaics (PVs) with Second Life Batteries (SLBs) was evaluated in five US cities. The annualized system cost and global warming potential (GWP) of SLB with PV were compared with those of grid-connected PV. If excess electricity generated by the PV is not sold back to the grid, adding SLBs provided more cost reduction; otherwise, adding SLBs increased the cost relative to having only the grid-connected PV. Adding SLBs to PV always had the lowest GWP in all cases. Additional work on the impact of time-of-use pricing will also be presented.

Area: Sub-Area 12.2: Sustainability