Solar in Corte Madera

Roof, shade, panel, profile

Every solar conversation here runs through those four questions in that order. If one fails, the ones after it do not matter yet.

Roof. Years of life left in the covering, how many usable planes exist, the pitch, and how racking can be flashed without creating a leak path. A roof with under a decade left is a roof you replace first.

Shade. Not whether there is shade, but when. A tree clipping the array from seven to nine in the morning costs a different amount than one clipping it from three to six in the afternoon, and under current export rules the afternoon one costs more.

Panel. Your service rating, the busbar rating, and the existing load calculation. Solar and battery are both sources feeding that panel, and there are firm limits on how much backfeed a given busbar and main breaker combination will accept.

Profile. When you use power. A kilowatt-hour consumed the moment you make it is now worth more than one exported, so your profile decides whether the answer is a larger array, a battery, or a smaller array plus load shifting.

Any proposal that jumps from roof measurement straight to price has skipped three of the four.

Panel removal and reset is its own service line for us, and it comes up constantly where an array went up a decade ago and the roof underneath has since aged out. We take the modules down, label and store the racking, let the roofer work on clear decking, then reinstall with new flashings. Reusing a ten-year-old flashing on a new roof is the shortcut that produces the callback.

Why solar work in this town turns into electrical work

Much of Corte Madera is mid-century or older, so original panels and water heaters are frequently at the end of their service lives. On the older streets and up on the hill we routinely open panels rated well below what a modern household draws, sometimes with no spare spaces, occasionally with aging bus and breaker stock we would not want to add anything to.

When the backfeed numbers do not work, the options are a main panel upgrade, a connection ahead of the main breaker, or a redesign that reduces what lands on the panel. Which one is right depends on the service, the meter location, and what else you plan to add over the next few years. We handle it in-house, which is the practical case for one contractor: the array design and the electrical panel upgrade are one conversation on one permit schedule. If the project needs broader electrical work in Corte Madera, it does not become a second vendor and a second calendar.

Batteries, backup, and Public Safety Power Shutoff

A grid-tied array with no storage stops producing the instant the grid goes down. The inverter is required to disconnect so it cannot energize a line a utility crew may be working on. That is the single most common misunderstanding we correct on site visits.

It matters in the hillside parts of town, where fire risk and PG&E's Public Safety Power Shutoff program both apply. PG&E may turn off power for safety during severe weather. Storage paired with solar carries a defined set of circuits through that and recharges from the array the next day, which fuel-dependent equipment cannot do.

The design question is scope. Whole-home backup means the battery must start and carry everything, including the largest motor loads, and most people do not need that. A backup subpanel carrying refrigeration, internet, lighting, selected outlets, pumps where applicable, and one heating zone gets you through a multi-day outage on far less capacity, sized from a list you help write. Where a shaded lot means the array can never meaningfully recharge storage, a standby generator is sometimes the more rational answer, and we are a Certified Generac Generator installer, so both paths can be priced side by side.

MCE also runs a Solar Storage Credit for battery owners, set out on its net energy metering page, paying a monthly bill credit for discharging in the four to nine p.m. window. That turns a battery from a pure outage device into something that earns during normal weeks, so it belongs in the equipment decision.

How exports are paid now, and why it changed the math

The California Public Utilities Commission's Net Billing Tariff took effect on April 15, 2023 and applies to new interconnections from that date forward. Under it, per the CPUC's own description, generation is "first used to serve onsite load," and "compensation for excess generation exported to the electric grid is applied to a customer's bill at a rate reflecting the value of this generation to the grid."

What you use yourself offsets retail. What you send out is worth what the grid says it is worth at that hour. Oversizing purely to bank exports is a weaker play than it was a decade ago; matching production to consumption, moving flexible loads into daylight, and holding energy for the evening peak are stronger ones.

There is a local layer on top. MCE is the community choice electricity provider in Corte Madera and PG&E delivers the power. MCE credits its solar customers monthly instead of at an annual true-up, saying credits "accrue at retail rates and are applied toward your monthly bills during the year," and settles surplus at its spring cash-out at the net surplus compensation rate plus a per-kilowatt-hour adder. You see generation on the bill through the year rather than waiting twelve months to learn where you landed.

Permits and inspection in Corte Madera

Residential rooftop systems in town are permitted by the Town of Corte Madera Building Division. Homes in the unincorporated pockets nearby go through the Marin County Community Development Agency instead, so confirming which applies to your address is step one.

State law frames both. Government Code 65850.5, linked above, requires that a city or county "shall administratively approve applications to install solar energy systems through the issuance of a building permit or similar nondiscretionary permit," along with an expedited process for small residential rooftop systems, a published compliance checklist, and electronic submittal. Review is ministerial. A permit is still required; the statute streamlines it rather than removing it.

The sequence is design and load calculation, permit application, installation, town inspection, then utility interconnection authorization. Your array does not legally operate the day it is finished. It operates when the utility says it may. Battery installations add placement and clearance review, so equipment location gets settled during design instead of on install day.

What drives cost on a Corte Madera solar project

No two of these projects are alike, so the useful thing to explain is the set of variables rather than a number that will not apply to your house.

• Roof plane count and size. One large plane is cheaper per module than four small ones, and hillside roofs skew small.
• Pitch and access. Steep roofs, narrow streets, and long carries add labor and staging time.
• Roof covering. Composition, tile, and metal need different mounting and flashing work.
• Conduit distance. How far the array sits from the point of interconnection, and whether the run can be concealed.
• Electrical scope. Whether the panel takes the new source as is, needs upgrading, or needs a different interconnection method.
• Battery scope. Number of units, whole-home versus a backup subpanel, and where equipment can legally sit.
• Detached structures. A garage or ADU array usually means trenching, priced by what lies between the buildings.

Those variables go in writing before work starts, and financing options are laid out at the same time rather than introduced at signing.

What incentive money exists today

Programs in California move faster than any page can promise, so treat this as the current state of play and let us confirm it at scoping. MCE's Solar Storage Credit, described above, is the most directly relevant program here.

One item catches people pairing solar with a car: MCE's charging program covers workplaces, multifamily properties of four or more units, and commuter parking lots. A single-family charger sits outside it. Ask instead about PG&E's residential charger rebate, whose terms cover Community Choice Aggregation customers, and about MCE Sync, which rewards smart charging rather than equipment. Terms on all of it change, so we confirm status at scoping rather than quoting last year's version.

Solar is one part of a house that keeps getting more electric

Corte Madera sits fully inside the Bay Area Air Quality Management District, so the district's zero-NOx appliance rules apply. The 2023 amendment to BAAQMD Regulation 9, Rule 6 established zero-NOx requirements for residential water heaters, with point of sale standards phased across 2027 and 2031 by equipment type, so they reach what may be sold and installed rather than the unit already in place. No existing gas water heater is banned; we track the rulemaking and confirm what is required at project time.

California's 2025 Building Energy Efficiency Standards took effect January 1, 2026, per the California Energy Commission, moving new single-family construction onto a single fuel baseline, with heat pumps prescriptively required for water and space heating alike. That is a new-construction baseline, not a mandate on your replacement, and the same distinction applies to CALGreen, whose EV-ready provisions are new-construction requirements rather than a retrofit obligation.

For sizing, a heat pump for heating and cooling, a heat pump water heater in Corte Madera, and a car charger each add meaningful annual load, so anything on your five-year list belongs in the array and battery conversation now. We are a Mitsubishi Diamond Contractor Elite and a Trane Comfort Specialist, so a heat pump install in Corte Madera can be designed alongside the array. Charger permitting is set by state law rather than local discretion under Government Code 65850.7, and PG&E's electric vehicle rate plans interact with the design, since one meter versus a second dedicated meter belongs in the EV charger installation plan from the start.

Keeping a Corte Madera array producing

Rooftop solar is low-maintenance, not no-maintenance, and in a wooded, marine-influenced setting three things need staying ahead of.

Monitoring is first. Compare monthly output to the same month last year. A gradual decline usually means soiling or a tree that has grown. A sudden drop on one section points to a failed microinverter or optimizer; a drop across the whole system points to the inverter or a tripped breaker. Inverters are the component most likely to need replacing during an array's life, well before the modules do.

Debris and biology are second. Under a canopy you get needle drop, leaf litter, and pollen that rain will not fully clear, plus squirrels and birds nesting in the gap between modules and roof. Perimeter critter guard is inexpensive at install and irritating to retrofit after something has chewed a conductor.

Penetrations are third, because flashing and sealant have a life and an array is a set of roof penetrations you cannot see from the ground. Batteries get their own check: firmware, state of health, and an actual backup test, since you want to learn the transfer works on a calm Tuesday. Our maintenance program puts those on a schedule.

How to choose a solar contractor for this work

Ask who holds the electrical license and who is doing the panel work, because one C-10 contractor across the whole scope removes the handoff where problems live. Ask for the load calculation; if nobody looked at your service size before quoting an array and a battery, the number is a guess. Ask how shade was assessed, since a site-measured model beats a screenshot. Ask who pulls the permit and who files the interconnection, in writing, with the inspection and authorization steps named. Then ask what happens when the roof needs replacing, because a company offering removal and reset as a defined service has thought about the ten-year picture.

What North Bay homeowners say

Two recent reviews from customers in our service area:

Solar and the rest of the house across Corte Madera and Marin

One company, every trade: solar across Marin County, the full Corte Madera service matrix, electrical work, panel upgrades, EV charger installation, heat pump systems, and water heater replacement. Nearby: solar in Mill Valley and solar in San Rafael.