National brands vs. local installers: the tradeoffs
National companies like Sunrun, Tesla Energy Solar, and SunPower offer broad dealer networks, standardized processes, and often centralized customer portals. That can mean predictable timelines and software-driven monitoring. Local installers tend to be smaller, which can translate to more hands-on design, faster responses for service calls, and deeper experience with San Jose permitting and HOA rules. Expect tradeoffs: national firms may bundle services and provide uniform processes, while local shops may be more flexible on custom layouts and choosing specific equipment. Which side makes sense depends on how much you value consistency, local knowledge, and post-install service in your neighborhood.
What tech-minded homeowners should compare
If you care about a premium system, look past sticker brands and focus on components and features: panel efficiency and degradation rates, inverter type (string vs. microinverters), battery compatibility and the battery’s usable capacity, and monitoring or smart-home integration. Ask whether the installer supports third-party equipment or only their own products. Find out how the monitoring platform displays production and how granular the data is. Also check the company’s approach to firmware and software updates for inverters and batteries — and who handles ongoing support if something goes wrong. Remember: the right hardware depends on your roof, shade, and how you plan to use stored energy.
How to compare quotes and installers
When you get multiple proposals, compare the same things across every quote. Standardize on system size (kW), expected annual production, equipment make and model, inverter and battery details, and an itemized scope of work. Ask about lead times, permitting and inspection handling, and who is responsible for utility interconnection. Check installer credentials: local licensing, insurance, and any manufacturer training or certifications. Read recent local reviews and ask for references from nearby installs. Finally, look for clear terms on post-install service calls and replacement procedures — service quality often makes more difference than small price differences. Always remember that final pricing and performance depend on your location, roof, utility usage, financing, and installer quality.
What to prepare before requesting quotes
Gather a year of electricity bills, photos of your roof from the street and yard, and notes about shade, attic access, and any HOA restrictions. Decide upfront what matters more: maximum production, a sleeker roof-mounted look, or a system sized to pair with a battery. If you have a smart home or existing battery, note the brand and model so installers can confirm compatibility. Finally, set a realistic timeline and a budget range to help installers tailor proposals. Clear information up front speeds site visits and yields more accurate bids.