Electrical Panel Upgrade in Corte Madera, CA

There is a third path many homeowners are never offered. Rather than raising the service size, you can sometimes keep it and manage the load. A smart panel meters every circuit individually and can shed, stagger or throttle large loads so the car charger, the heat pump and the water heater never peak in the same instant, converting a capacity problem into a scheduling problem. It is not universal: if your service conductors, meter socket or equipment condition is the constraint, load management repairs none of it. We are a SPAN Certified Installer, so when a SPAN smart panel is the right call for a Corte Madera home we install, configure and commission it in-house.

Symptoms: what a failing panel looks like

Most panels here do not announce themselves. On the streets where we do the most panel work the enclosure on the wall is frequently the original one, and decades of thermal cycling leave marks worth learning to recognize. Watch for these:

• Breakers that trip repeatedly on one circuit with no change in what is plugged in
• A main breaker you have reset by hand more than once in a season
• Rust streaks, scorch marks, or a hot-plastic smell at the panel door
• Two rows of breakers with no single main disconnect, which is a split-bus design
• Screw-in or cartridge fuses instead of circuit breakers
• Two conductors landed under one breaker lug because the panel ran out of spaces
• Aluminum branch-circuit wiring terminated on devices not listed to accept it
• Lights that visibly dim when the dryer, a compressor, or a shop tool starts
• Warmth you can feel through the dead front cover
• No grounding electrode conductor you can trace, or a missing bonding jumper
• Zero remaining spaces, with a subpanel already tapped off the main

A real evaluation goes past the visible list. We check terminations for torque, look for heat signatures under load, verify the grounding electrode system is continuous rather than assumed, inspect the meter socket for burned or spread jaws, and count usable spaces against the circuits you need.

One finding surprises people: a panel can look clean, measure fine and still be finished, because listed replacement breakers are no longer manufactured for its bus geometry. Then an ordinary repair is unavailable at any price, and replacement beats a salvaged breaker.

Incentives, and what is genuinely open

Programs here change faster than the code, so treat this section as something to verify.

Which measures are open moves during a program year, and only one incentive is available per measure per address, so we check what is reservable at proposal time.

MCE is your community choice provider, and what it does not fund is useful to know. On EV charging, its program covers a "Workplace that will offer EV charging to employees and/or fleet," a "Multifamily property of four or more housing units," and "Commuter parking lots, such as a park & ride or ferry terminal" (MCE, EV Charging). A single-family charger is outside all three. What is worth being aware of for a panel project specifically is that PG&E's residential charger rebate has an income-qualifying tier reaching the purchase and installation of a charger together with an electrical panel upgrade, and its terms make Community Choice Aggregation customers eligible. That is the one route where charger money can touch the panel, so it belongs in the sequencing conversation rather than after it.

If the panel work exists because a car is arriving, the rate plan belongs in the same conversation. PG&E's EV2-A is a single-meter plan that "applies to both your home energy and your vehicle's electricity use," off-peak from midnight to 3 p.m. daily and peak from 4 to 9 p.m.; customers whose usage exceeded 800% of baseline allowance over the last 12 months are not eligible. EV-B requires a second, dedicated meter, which is a scope item on the install drawing rather than a billing preference you select later (PG&E, Electric Vehicle Rate Plans). The plan most often overlooked is E-ELEC, which carries a Base Services Charge against lower per-kilowatt-hour prices and is aimed at homes electrifying in more than one direction.

The charger permit runs on a statutory clock. Government Code 65850.7 requires every California city and county to "adopt an ordinance... that creates an expedited, streamlined permitting process for electric vehicle charging stations" and to approve those applications through "a building permit or similar nondiscretionary permit." The statutory clock is in Government Code 65850.71. For an application covering at least 1 but not more than 25 stations, it is deemed complete five business days after submission and deemed approved twenty business days after that, subject to the statute's exceptions. A permit is still required; the law limits how long it can sit. That matters for EV charger installation in Corte Madera, where the charger and the panel are usually one project.

Maintenance after the upgrade

New service equipment is not maintenance-free. Terminations relax slightly through the first year of thermal cycling, so a torque check at the one-year mark is worth scheduling. Arc-fault and ground-fault devices carry test buttons because pressing them is the only proof they still function. Keep the circuit directory accurate. If a surge protective device was installed at the service, it has a status indicator, and a spent one stops protecting silently.

Backup power deserves its own note. PG&E may turn off power during severe weather to reduce the risk of its equipment causing a wildfire, through the program it calls a Public Safety Power Shutoff, and the wooded streets above town are where that exposure sits. PG&E does not commit to a fixed amount of warning either, since a fast-moving forecast can compress it to the same day. If you want the house to ride through a shutoff, design the transfer equipment alongside the panel: the transfer switch, the backed-up circuit selection and the panel layout are one design problem. Ongaro & Sons is a Certified Generac Generator installer, and we would rather draw that into the original single-line.

Revisit the calculation whenever the house electrifies further. Adding a heat pump in Corte Madera or converting to a heat pump water heater both land new 240-volt loads on the service, and the math that justified your panel two years ago may not carry the house you have now.

Where we work in Corte Madera

We cover the whole town, from the flats up onto Christmas Tree Hill. Where a street's houses went in together, we find their original panels and original water heaters coming due together as well, which is why so many Corte Madera electrical calls start as one problem and turn into a sequencing conversation.

The climate is mild with real marine influence, and cooling demand has historically been modest. That is precisely why capacity bites now: for sixty years these houses never needed a compressor, so nobody asked the service to carry one, and heat pumps changed that inside a decade. Marine air also works on outdoor equipment, so meter sockets nearer the shoreline show corrosion that sheltered installations do not.

One local detail affects the paperwork more than people expect. Homes in town are served by Marin Water, the Marin Water, so no well pump enters the load calculation. On unincorporated Marin parcels served by a private well, that pump is a fixed load and frequently the largest motor in the math, which changes the recommended service size. Two houses a few miles apart get different answers for that alone.

How to choose an electrician for this work

Ask to see the load calculation before you see a number. A contractor who recommends a service size without producing one is guessing with your money.

Ask who pulls the permit. If the answer is that you will pull it as an owner-builder, you have taken on the liability and the inspection.

Ask who coordinates PG&E and who stands there when the meter is pulled and reset. Both belong to the contractor.

Ask what happens to the grounding electrode system. It is most often skipped on a fast swap and the item an inspector most reliably checks.

Ask what the quote assumes about your branch circuits, and what changes if that assumption fails once the dead front comes off.

Ask for the license classification in writing. C-10 is the California electrical classification; C-20 covers HVAC and C-36 covers plumbing, and a multi-trade project should show all three. Then ask whether replacement breakers for the proposed panel will still be purchasable in ten years.

What North Bay homeowners say

Unedited reviews from Ongaro & Sons customers in the North Bay.