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California / Local permit guide

Hercules Solar Permit Guide

Your local requirements. The official sources. A clearer next step.

Electric utility
Pacific Gas & Electric (PG&E)Source linked
Review time
Same-day review for eligible expedited-permit projectsNo verified standard-path permit timeline is available.See source scope and conditions below.
See your permit path

Contra Costa County · Explore related utility guides

Hercules Solar Permit Checklist
Printed from mygridpermit.com/california/hercules/solar-permit-guide/ · Last verified 2026-08-08 · Contra Costa County Department of Conservation and Development, Building Inspection Division / PG&E · Verify current requirements before relying on this checklist. Programs and fees change.
Source healthLast verified 2026-08-083 official sources6 of 6 core facts verified
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Informational only. This page is not legal, engineering, or permit advice. Every fact below links to the official source it came from and shows how confident we are in it. Verify current requirements with Contra Costa County Department of Conservation and Development, Building Inspection Division and PG&E before making a decision.

Research coverage

Your permit path,
at a glance.

This shows what GridPermit has verified for Hercules. It does not show the status of a specific project.

  1. 01Permit authorityContra Costa County Department of Conservation and Development, Building Inspection DivisionAuthority sourced
  2. 02DocumentsChecklist includes conditional itemsConditions apply
  3. 03InspectionInspection guidance for HerculesSteps sourced
  4. 04Utility & PTOPacific Gas & Electric (PG&E)Utility path sourced

01 / Know your path

Two approvals.
One project.

Local authority

Permit & inspection

Contra Costa County Department of Conservation and Development, Building Inspection Division

Local requirements
Electric utility

Interconnection & PTO

Pacific Gas & Electric (PG&E)

Utility requirements

A local permit and utility permission to operate are different approvals. Check the local sequence and requirements below.

How to read this guide

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.

Permits are auto-issued and emailed within a few minutes of successful SolarAPP+ submission to the County.

Sources & confidence

Confidence: High (0.85)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Battery/solar incentive program on record

No battery/storage incentive program is on record for this locality.

02 / Prepare your application

What you need.

0 of 3 markedSaved only on this device; not confirmation of permit readiness.

Sources & confidence

Confidence: High (0.9)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Permit fees

  • Solar system review fee: $35 (flat)
  • Energy storage add-on fee: $25 (flat)
  • Re-inspection penalty (missing/incorrect documents): $150 (flat)
Sources & confidence

Confidence: High (0.85)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Rebates on record

Rebates on record

Not yet verified.

Utility and generation supplier

Utility

Pacific Gas & Electric (PG&E)

Hercules is a well-documented Contra Costa County city within PG&E's core Northern California service territory.

Sources & confidence

Confidence: High (0.9)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Generation supplier

MCE (Marin Clean Energy) (Community Choice Aggregator)

MCE's own service-area page confirms Hercules as one of 16 Contra Costa County communities it serves (alongside Concord, Danville, El Cerrito, Lafayette, Martinez, Moraga, Oakley, Pinole, Pittsburg, Pleasant Hill, Richmond, San Pablo, San Ramon, Walnut Creek, and unincorporated Contra Costa County). PG&E continues to deliver the power and provide billing/customer service.

Sources & confidence

Confidence: High (0.85)

Source(s): Service Area

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.

Confidence: Medium (0.55)

Permit authority

Contra Costa County Department of Conservation and Development, Building Inspection Division

Contra Costa County's own SolarAPP+ page directly confirms Hercules is one of the cities (alongside Clayton, Lafayette, Orinda, and the Town of Moraga) that contracts residential building permitting to the County rather than maintaining its own building department for this function.

Sources & confidence

Confidence: High (0.85)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Permit page: https://www.contracosta.ca.gov/9880/Solar-Permits-through-SolarAPP-For-Solar

Inspection steps

  • Schedule inspection by phone (925-646-4108, same-day requests accepted until 5:30 AM Monday-Friday) or online via the ePermits Center
  • Schedule type: '120 Building-Final'
Sources & confidence

Confidence: High (0.85)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Eligibility constraints

  • Property types: residential
  • Max system size (AC): Not yet verified.
  • Max system size (DC): Not yet verified.
  • Max thermal capacity: Not yet verified.
  • Program/pathway: Contra Costa County SolarAPP+ (covers Hercules, Clayton, Lafayette, Orinda, Town of Moraga, and unincorporated County)
  • Other conditions:
    • Main dwelling rooftop residential structures only; no ballasted systems or mobile home parks
    • Not in FEMA Special Flood Hazard Areas or airport safety zones; not historic properties
    • Applicant contractor must be licensed and previously registered with SolarAPP+
Sources & confidence

Confidence: High (0.9)

Source(s): Solar Permits through SolarAPP+ For Solar Installers

Official contacts

Official contacts
  • Contra Costa County Building Inspection Division, phone: 925-655-2700, official website
  • Contra Costa County Inspection Scheduling, phone: 925-646-4108, official website

Confidence: High (0.85)

Need a solar installer who handles permits in Hercules?

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 links to EnergySage as an independent third-party resource. This link is not currently tracked for compensation.

Official sources

Official sources

Frequently Asked Questions

What utility serves solar customers in Hercules, California?

Pacific Gas & Electric (PG&E) is the interconnection and distribution utility for Hercules. 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 Hercules?

Permits are auto-issued and emailed within a few minutes of successful SolarAPP+ submission to the County. No verified standard-path permit timeline is available.

What documents are required for a solar permit in Hercules?

Commonly required documents include: AS BUILT plan set with manufacturer specifications (11x17, color, minimum); SolarAPP+ Approval document; Permit card (2 pages).

Who do I contact about solar permits in Hercules?

Contra Costa County Building Inspection Division, phone 925-655-2700.

Disclaimers: This page is for informational purposes only and is not legal, engineering, financial, tax, or permit advice. GridPermit is not a solar installer, contractor, engineering firm, public utility, or government agency. Requirements, fees, and program terms change. Verify current requirements with Contra Costa County Department of Conservation and Development, Building Inspection Division and PG&E before starting a project. Last verified 2026-08-08.

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