Service area likelihood
LikelyBased on your city and this installer's office location.
Financing options2 coverage areas
Installer profile
Off Grid Solar Consulting
San Marcos, CA
At a glance
Service area likelihood
Likely
Based on your city and this installer's office location.
Home battery backup
Ask installer
Ask whether battery backup is part of their current residential work.
Whole-home backup
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Ask whether the quote covers whole-home backup or a critical-loads panel.
Financing
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Ask whether financing is available for the battery system and installation.
Residential service
Confirmed
Confirmed from saved installer sources.
Battery brands
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Ask which battery brands they install, service, and recommend for your backup goal.
Coverage areas
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Ask whether they serve homes in or near San Marcos.
Battery-only retrofit
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Ask whether they can add storage to an existing solar system.
Solar plus storage
Ask installer
Ask whether they design solar and storage together for backup power.
Good fit if...
- Your project is for a residential property.
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.
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