Solar Optimum

Solar Optimum installs residential and commercial solar panels, battery storage and roofs across California. The company has been in business since 2008 and says it has installed more than 550 MW of solar and battery systems for homeowners and businesses. Its home battery lines include Enphase and Tesla Powerwall units, and it offers a battery backup option meant to keep power on during an outage.

Free estimates are offered by phone or through the website's quote form, and a technician will gather details for a quote on solar and roofing projects. Installation is handled in-house from assessment and design through install, and the company offers 25-year warranties on panels, inverters, racking, roofing and workmanship. Its office is at 1833 S. Victory Blvd in Glendale, and phone lines run during weekday business hours.