About Us

Massachusetts-based 621 Energy, LLC builds, owns, operates and services commercial-scale solar photovoltaic systems. We provide a complete range of solar PV solutions.

Peak Performance

Not all PV systems are the same! Many installed PV systems are underperforming their potential production through sub-optimal design, installation or maintenance practices.


Massachusetts is one of the leaders in US Solar energy adoption, currently ranking 6th among all states in total installed solar capacity. Household Goods Recycling of Massachusetts (HGRM) is excited to be part of that adoption trend.