Independent Educational Guide: California residential solar permit facts, sourced, dated, and confidence-scored. Not legal, engineering, or permit advice.

Millbrae Solar Permit Guide

Pacific Gas and Electric Company (PG&E) territory · San Mateo County

Millbrae Solar Permit Checklist
Printed from mygridpermit.com/california/millbrae/solar-permit-guide/ · Last verified 2026-08-13 · City of Millbrae Building Division / PG&E · Verify current requirements before relying on this checklist. Programs and fees change.
✓ Last verified 2026-08-137 official sources
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 City of Millbrae Building Division and PG&E before making a decision.

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

Not yet verified.

The city's Building Division page states 'Permit applicants should allow 15 days for all plan check activities to be performed' as the standard timeline; solar PV systems are separately described as qualifying for a streamlined, in-house expedited review, which the source suggests may be faster than the standard 15-day timeline but does not itself quantify.

Confidence: Medium (0.6)

Source(s): Building Division

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.

Confidence: High (0.9)

Source(s): SGIP - Statewide Announcements / About, 2026 Self-Generation Incentive Program Handbook, SGIP Program Metrics and Incentive Step Tracker

Permit fees

Not yet verified.

Rebates

Not yet verified.

Utility and generation supplier

Utility

Pacific Gas and Electric Company (PG&E)

Confidence: High (0.9)

Source(s): PG&E's Electric Service Territory

Generation supplier

WestLight Energy (formerly Peninsula Clean Energy) - ECOplus (default) (Community Choice Aggregator)

Confirmed directly via WestLight Energy's own site, which states it serves San Mateo County (including Millbrae) and the City of Los Banos, with ECOplus remaining the default product (50% renewable, rates effective July 1, 2026, lower than PG&E). PG&E continues to handle billing, metering, and outage response. The City of Millbrae's own civic-alert page previously cited for this rebrand (CivicAlerts.aspx?AID=164) returned a confirmed 404 on re-check; searching the City's current site found no live replacement page documenting this specific rebrand (the City's own 'Energy Conservation' page, ci.millbrae.ca.us/337/Energy-Conservation, is itself stale and still links to the pre-rebrand peninsulacleanenergy.com domain rather than westlightenergy.org). Rather than cite a dead or non-corroborating page, this fact is now supported solely by WestLight Energy's own official site, which independently and currently confirms Millbrae/San Mateo County coverage.

Confidence: High (0.85)

Source(s): WestLight Energy (Homepage) - 'Peninsula Clean Energy is now WestLight Energy'

Interconnection

https://www.pge.com/en/about/doing-business-with-pge/interconnections/net-energy-metering-program.html

PG&E's own Net Energy Metering (NEM) program page — a utility-wide fact already established for other PG&E-territory records in this dataset.

Confidence: Medium (0.6)

Permit authority

City of Millbrae Building Division

Confidence: High (0.9)

Source(s): Building Division

Permit page: https://ci.millbrae.ca.us/176/Building-Division

Required documents

Not yet verified.

Inspection steps

  • Call the Building Division at 650-259-2330 to schedule an inspection
  • Inspections are conducted Monday through Friday, 9:00 a.m. to noon and 1:00 p.m. to 4:30 p.m.

This is the City's general Building Division inspection scheduling process (the same page covers all building permit types, including solar); the City's page does not describe a separate, solar-specific inspection sequence.

Confidence: Medium (0.55)

Source(s): Building Division

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: Streamlined in-house review for SolarPV systems
  • Other conditions:
    • The city's own page states: 'Certain types of permits may be subject to a streamlined permitting process and will be reviewed in-house as time allows, these permits/plans are typically for SolarPV systems, kitchen, and bath remodels'

Confidence: Medium (0.7)

Source(s): Building Division

Official contacts

Confidence: High (0.85)

Need a solar installer who handles permits in Millbrae?

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

Frequently Asked Questions

What utility serves solar customers in Millbrae, California?

Pacific Gas and Electric Company (PG&E) is the interconnection and distribution utility for Millbrae. The default electricity generation supplier is WestLight Energy (formerly Peninsula Clean Energy) - ECOplus (default), a Community Choice Aggregator (CCA), separate from Pacific Gas and Electric Company (PG&E).

How long does a residential solar permit take in Millbrae?

The city's Building Division page states 'Permit applicants should allow 15 days for all plan check activities to be performed' as the standard timeline; solar PV systems are separately described as qualifying for a streamlined, in-house expedited review, which the source suggests may be faster than the standard 15-day timeline but does not itself quantify.

Who do I contact about solar permits in Millbrae?

City of Millbrae Building Division, phone 650-259-2330, email PTech@ci.millbrae.ca.us.

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 City of Millbrae Building Division and PG&E before starting a project. Last verified 2026-08-13.

All California Guides · Methodology · How It Works · Back to GridPermit