DR Solar

This San Francisco Bay Area-based consulting firm specializes in passive solar design, photovoltaic systems, battery energy storage, and modular building solutions for off-grid and net-zero structures. Drawing on decades of experience in sustainable technologies and owner-builder practices, the firm offers comprehensive services spanning residential ADUs to village-scale infrastructure and water systems. Their approach combines early computer modeling techniques with pragmatic design solutions for homeowners, developers, and municipalities seeking sustainable living solutions.

Passive solar design and construction