Pacifica
1966 Tudor
12.1 kW Solar · 28.6 kWh Battery
“We've already had a PG&E power outage where the whole-home battery backup worked flawlessly. Production is right where they said it would be.”
Andres M. · Google review
For homeowners who plan in years, not months.
Home energy.
Engineered for long-term value.
Roughly half the lifetime cost of PG&E electricity.
Solar, battery, smart panel, and software, designed as one system.
CSLB #1147463 · C-10 · CALSSA member
Your electricity needs are increasing
Over the next decade you’ll add an EV charger, swap the furnace and water heater for heat pumps, and replace the gas range with induction. Every one of those decisions runs through your electrical panel, and increases your reliance on the grid.
Electricity use for a typical Bay Area home
Today
6,000
kWh / year
Today
6,000
kWh / year
In 2035
12,000
kWh / year
In 2035
12,000
kWh / year
PG&E is not able to deliver.
In December 2025, a fire at PG&E’s Mission substation cut power to about 130,000 San Francisco customers, roughly 30% of the city, for up to 48 hours. PG&E personnel had found the damaged equipment a month earlier and left it in place. The same substation had failed in 1996 and 2003. A properly sized battery runs your home through events like this without you noticing. SF Standard’s reporting on the outage.
What most installers get wrong.
They sell solar and batteries. They don’t consider your home as one connected energy system.
Four things that make a Potrero system different.
Every design decision is made to lower your cost over the long run.
Bay Area roofs are small, chopped up by chimneys and setbacks, and shaded by trees. Most installers skip the hard spots and let the shade drag the rest down. We design around the geometry to fit more panels, then install Optivolt panelsthat keep producing in partial shade. More panels, each producing more: up to 2× the lifetime energy of a standard install.
Same upfront price as the typical Bay Area quote. Roughly double the value over the long run.
Three recent installs.
Berkeley
1958 Brown Shingle
8.5 kW Solar · 28.6 kWh Battery
“The value proposition is bang on, and the service is amazing. They were even helping with all the paperwork afterwards.”
Alexander K. · Google review
Potrero Hill
1916 Edwardian
10.2 kW Solar · 28.6 kWh Battery
“They went the extra mile to find the best placement for everything in our old house. We're really enjoying watching our PG&E bill go almost to zero.”
Ann G. · Google review
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One project. One engineer. Start to finish.
The person who designs your system signs off on the final install. No call-center handoff, no salesperson disappearing after you sign. The first conversation is a design consultation with the engineer who would run your project.
The team
Four people. San Francisco.
Steve Joseph
CEO
Electrical engineer. Shifted focus to climate in 2023 and started Potrero to accelerate residential decarbonization in a way that maximally benefits the grid. The more we can help the grid, the more we can accelerate electrification across the world's fifth-largest economy.
Jesse Cruz
Field Operations
Licensed electrician with over 20 years of experience in the solar and storage industry across Northern California. Takes pride in high-quality work with a clean, professional aesthetic. Climate work makes it easy to get up in the morning.
Patrick Kasbaek
Business Operations
Moved to San Francisco from Copenhagen, where he worked in external affairs at one of the world's largest energy companies. Was part of Denmark's largest carbon capture and storage project, still on trajectory to be a major milestone for the country.
Tyler Servais
Growth
Spent the last four years building residential energy software: dynamic EV charging that follows real-time prices, virtual power plants that dispatch home batteries to the grid. Now bringing this technology to Bay Area homes.
1 / 4
Steve Joseph
CEO
Electrical engineer. Shifted focus to climate in 2023 and started Potrero to accelerate residential decarbonization in a way that maximally benefits the grid. The more we can help the grid, the more we can accelerate electrification across the world's fifth-largest economy.
Jesse Cruz
Field Operations
Licensed electrician with over 20 years of experience in the solar and storage industry across Northern California. Takes pride in high-quality work with a clean, professional aesthetic. Climate work makes it easy to get up in the morning.
Patrick Kasbaek
Business Operations
Moved to San Francisco from Copenhagen, where he worked in external affairs at one of the world's largest energy companies. Was part of Denmark's largest carbon capture and storage project, still on trajectory to be a major milestone for the country.
Tyler Servais
Growth
Spent the last four years building residential energy software: dynamic EV charging that follows real-time prices, virtual power plants that dispatch home batteries to the grid. Now bringing this technology to Bay Area homes.
What to expect.
Most of our projects land between $30,000 and $55,000 all in, including the smart panel, battery, solar array, permitting, and PG&E hookup.
A typical system pays back in 5 to 12 years.The more power your home uses, the faster it pays back. We’ll model it for your actual usage and your actual plans during the consultation.
You invest in the equipment. No monthly leases, no PPAs. Buy with cash, or secure a loan through a credit union that we trust.
Typical project range
$30kto$55k
All in: smart panel, battery, solar array, permitting, PG&E hookup.
Typical payback
5–12 yrs
Battery warranty
10 yr
Panel warranty
25 yr
Workmanship
10 yr
The questions we get from buyers who are paying attention.
One to three months from signing to final inspection. Most of that time is permitting and PG&E hookup, which we manage but don’t control. The on-site work itself is up to five days, run as a single week. You stay in the house. We coordinate one planned power-down for the panel cutover, and the roof is watertight at the end of every day.
Same price. Twice the value.
A 30-minute design consultation, with the engineer who would run your project. We’ll bring the conservative case and a fixed price. If it doesn’t pencil for your house, we’ll say so.