Installer profile

Sunternal

San Jose, CA

At a glance

Service area likelihood

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Based on your city and this installer's office location.

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Home battery backup

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Ask whether battery backup is part of their current residential work.

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Whole-home backup

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Ask whether the quote covers whole-home backup or a critical-loads panel.

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Financing

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Ask whether financing is available for the battery system and installation.

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Residential service

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Ask whether they work on homes like yours.

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Battery brands

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Ask which battery brands they install, service, and recommend for your backup goal.

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Coverage areas

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Ask whether they serve homes in or near San Jose.

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Battery-only retrofit

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Ask whether they can add storage to an existing solar system.

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Solar plus storage

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Ask whether they design solar and storage together for backup power.

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Request a quote from Sunternal

Share your location and backup goal so the request can stay focused around this installer.

City or ZIPBackup goal

Existing solar?Name

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Notes (optional)I agree that Liberty Power Home may contact me about this request and may share my request and contact information with the installer profile you selected so they can follow up about my home battery backup project.

Privacy note: We use your information to review and route this request. Installers may contact you by email or phone about this project, and we may receive compensation from participating installers for matched leads. Submitting this form does not require you to hire an installer.

After you submit, we will review your location, backup goal, and page context so any follow-up can stay focused.

Check service area likelihood

Enter your ZIP code, city, or county to estimate how likely this installer is to serve your area. This is a likelihood signal, not a promise of service.

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Contact

Installer website+1 800-274-0901info@baysunsolar.com

Questions to ask this installer

?Will this design back up my whole home or only selected critical loads?
?Which battery brands do you install and service, and why do you recommend them for my home?
?Can you add storage to my existing solar system, or does the inverter need to change?
?How will you size battery capacity, inverter output, and backup circuits for outage needs?
?Who handles permits, utility interconnection, and inspection scheduling?
?What warranty covers the battery, inverter, workmanship, and post-install support?
?Will any work be subcontracted, and who is responsible for service after installation?
?What license number should I check with CSLB before signing a contract?

How to compare this quote

Compare quotes using the same backup scope, not just the battery brand or headline price.
Ask each installer to explain site assessment assumptions, protected loads, capacity, and estimated runtime.
Confirm whether solar can recharge the battery during an outage and what equipment is required.
Review financing, incentives, warranties, maintenance, and utility interconnection responsibilities.
Check contractor licensing and make sure the written proposal names the equipment and work covered.