Sol Solutions is a full-service home performance professional energy auditing firm serving the entire San Francisco Bay Area with headquarters in Napa, California. Our energy audits use diagnostic tools to pinpoint and analyze your home’s energy efficiency and indoor air quality. We evaluate your home’s insulation, air leakage, heating and cooling equipment, appliances, and lighting and provide a Home Energy Performance Report outlining the most cost-effective energy improvements for your home, your most valuable financial asset.