St. Helena Solar Permit Guide
Pacific Gas & Electric (PG&E) territory · Napa County
Overview
GridPermit collects California residential solar and permitting facts directly from official sources (city, county, and state government sites, utilities, and public utilities commissions) and shows only what we can verify, with a confidence score and a link to where it came from. Nothing here is estimated or inferred beyond what's stated below. See our methodology for the rules this page follows.
Permit timeline
Same-day review for eligible expedited-permit projects
No verified standard-path permit timeline is available.
The City's own page states residential roof-mount solar PV under 15kW DC that complies with the provided checklist requires no plans and 'will be issued as an Over-the-Counter permit' — i.e. same-day issuance. Larger/ground-mounted/commercial systems requiring full plan review are not covered by this same-day path.
Battery/solar incentive program on record
California SGIP - current category and budget check required
New applications and waitlist applications for ratepayer-funded SGIP budgets closed on December 30, 2025. New AB 209 applications have a June 30, 2028 deadline. The 2026 SGIP rate table publishes $3.10/W for solar and $1.10/Wh for storage in applicable Residential Solar and Storage Equity categories. Household eligibility and live budget availability vary by category and program administrator; check the official Program Metrics tracker before relying on an incentive.
Status on file: unknown. Verify current status before relying on this.
Permit fees
Not yet verified.
Rebates
Not yet verified.
Utility and generation supplier
Utility
Pacific Gas & Electric (PG&E)
Generation supplier
MCE (Marin Clean Energy) (Community Choice Aggregator)
MCE's own service-area page confirms St. Helena as one of 6 Napa County communities it serves (alongside American Canyon, Calistoga, Napa, Yountville, and unincorporated Napa County). PG&E continues to deliver the power and provide billing/customer service.
Interconnection
https://www.pge.com/en/save-energy-and-money/rebates-and-incentives/nem.html
PG&E's own utility-wide Net Energy Metering (NEM) program page.
Required documents
- Solar PV and ESS Permit Worksheet (completion checklist) (required when: always)
- Licensed Contractor's Declarations (required when: always)
Inspection steps
Not yet verified.
Eligibility constraints
- Property types: residential
- Max system size (AC): Not yet verified.
- Max system size (DC): 15 kW
- Max thermal capacity: Not yet verified.
- Program/pathway: Over-the-counter permit (roof-mounted, no plans required if checklist is met)
- Other conditions:
- Solar PV systems under 15kW DC qualify for streamlined over-the-counter processing
- Energy Storage Systems (ESS) up to 80kWh installed in detached structures or on building exteriors also qualify
- No review of plans commences until fees are paid
- All permitting is digital and paperless via the city's eTRAKIT portal
Official contacts
- City of St. Helena Building Division, official website
Need a solar installer who handles permits in St. Helena?
EnergySage is an independent solar marketplace where you can request property-specific pricing from installers familiar with local permitting.
Compare quotes from solar installers →You'll continue on EnergySage's website. GridPermit has a partner relationship with EnergySage; this link is not currently tracked, and whether the partnership results in compensation to GridPermit has not yet been confirmed.
Sources
- Solar PV & ESS, City of St. Helena (government). Accessed 2026-08-08.
- Net Energy Metering (NEM), Pacific Gas & Electric (utility). Accessed 2026-08-08.
- Service Area, MCE (Marin Clean Energy) (other_official). Accessed 2026-08-08.
- About, Self-Generation Incentive Program (SGIP) (cpuc). Accessed 2026-08-09.
- 2026 Self-Generation Incentive Program Handbook, Self-Generation Incentive Program Program Administrators (program_administrator). Accessed 2026-08-26.
- SGIP Program Metrics and Incentive Step Tracker, Self-Generation Incentive Program Program Administrators (program_administrator). Accessed 2026-08-26.
Frequently Asked Questions
What utility serves solar customers in St. Helena, California?
Pacific Gas & Electric (PG&E) is the interconnection and distribution utility for St. Helena. The default electricity generation supplier is MCE (Marin Clean Energy), a Community Choice Aggregator (CCA), separate from Pacific Gas & Electric (PG&E).
How long does an expedited-eligible residential solar permit take in St. Helena?
The City's own page states residential roof-mount solar PV under 15kW DC that complies with the provided checklist requires no plans and 'will be issued as an Over-the-Counter permit' — i.e. same-day issuance. Larger/ground-mounted/commercial systems requiring full plan review are not covered by this same-day path. No verified standard-path permit timeline is available.
What documents are required for a solar permit in St. Helena?
Commonly required documents include: Solar PV and ESS Permit Worksheet (completion checklist); Licensed Contractor's Declarations.
Who do I contact about solar permits in St. Helena?
City of St. Helena Building Division.
Related California cities
Other verified cities related to St. Helena. See all cities on the California solar permit guide index.
- American Canyon, Pacific Gas & Electric (PG&E)
- Napa, Pacific Gas & Electric (PG&E)
- Yountville, Pacific Gas & Electric (PG&E)
- Albany, Pacific Gas & Electric (PG&E)
- Antioch, Pacific Gas & Electric (PG&E)
- Arroyo Grande, Pacific Gas & Electric (PG&E)