Why would two buyers, closing on nearly identical three-bedroom houses three miles apart, end up with electric bills that run more than $100 apart every single month for as long as they own the place?
That gap shows up the moment someone moves from a house in Santa Clara to a house in Sunnyvale or Mountain View, or the other way around. It has nothing to do with insulation, solar panels, or how often anyone runs the air conditioner. It comes down to which grid the house sits on, and almost nobody puts that on the comparison spreadsheet when they're deciding between three cities that all sell homes in roughly the same price band.
Same Price Tag, Different City Services
Anyone comparing Santa Clara to Sunnyvale or Mountain View on price alone will find the three cities sitting close together. Over the three months ending June 2026, Santa Clara's median sale price was $1.7 million, down 2.6% from the same period a year earlier, with a median price per square foot of $1.22K, up 7.8% year over year. Sunnyvale's median over that same window was $1.8 million, down 17.1% year over year, with price per square foot at $1.19K, down 4.5%. Mountain View, over the three months ending August 2026, posted a median of $1.8 million, up 2.8% year over year, with price per square foot at $1.04K, down 3.0%.
| City | Median sale price | Price per sq ft, YoY | Electric utility |
|---|---|---|---|
| Santa Clara | $1.7M (3 mo. through June 2026) | $1.22K, up 7.8% | Silicon Valley Power, city-owned |
| Sunnyvale | $1.8M (3 mo. through June 2026) | $1.19K, down 4.5% | PG&E |
| Mountain View | $1.8M (3 mo. through Aug. 2026) | $1.04K, down 3.0% | PG&E |
At that level, a buyer running these three cities through a mortgage calculator would reasonably treat them as close substitutes. What the median price doesn't carry forward is what happens to the same household's power bill once the moving truck leaves.
Why Santa Clara Runs Its Own Grid
Santa Clara is one of the few cities in this part of the Bay Area that generates and delivers its own electricity instead of buying delivery through PG&E. The utility is called Silicon Valley Power, owned and operated by the city rather than by investors, which means it isn't obligated to produce a shareholder return the way PG&E is. Sunnyvale and Mountain View, along with Campbell, Cupertino, Los Gatos, and most of the rest of Santa Clara County, sit on PG&E's delivery grid, even where residents have opted into Silicon Valley Clean Energy for how their power is generated.
That structural difference is why the rate gap exists at all, and it's the reason it has persisted for years rather than closing as PG&E's costs have climbed.
What the Rate Gap Looks Like on an Actual Bill
The numbers here are specific enough to run through your own household's usage. As of early 2026, Silicon Valley Power's average residential rate sat around $0.182 per kilowatt-hour, meaning a household using 411 kWh in a month would see a bill close to $75. A PG&E customer using that same 411 kWh on a time-of-use plan at peak hours, as of December 2025, would pay closer to $201 for the month, more than double the Silicon Valley Power bill for identical usage. Even a PG&E customer on the utility's lowest available tiered rate, around 40 cents per kWh, would still land near $164 for that same usage.
Depending on which PG&E rate plan a Sunnyvale or Mountain View household is on, that puts the monthly gap somewhere between roughly $90 and $125, which works out to $1,000 to $1,500 a year, every year, for as long as the house is owned. Santa Clara customers also don't pay the additional user tax charge, often around 5%, that applies in most PG&E service areas, which widens the gap slightly further before a single kilowatt is used.
This isn't a static number sellers get to point to forever. The Santa Clara City Council approved a 4% increase to Silicon Valley Power's rates effective January 1, 2026, part of ongoing work on the city's power grid. Even with that increase built in, Silicon Valley Power's rates remain well below PG&E's, but the size of the gap is worth rechecking rather than assuming it never moves. Silicon Valley Power publishes its current rate schedules directly, and it's worth a look before finalizing any household budget built around one city over another.
The Part That Complicates the Easy Story
If the utility gap were the whole picture, you'd expect the market to price it in somewhere, with Santa Clara trading at even more of a discount to Sunnyvale and Mountain View than the raw median suggests, since buyers would be capitalizing those annual savings into what they're willing to pay. That's not quite what the data shows.
Santa Clara's price per square foot rose 7.8% year over year through June 2026, while Sunnyvale's fell 4.5% and Mountain View's fell 3.0% over their respective windows. On a per-square-foot basis, Santa Clara isn't the cut-rate option here. It's appreciating faster than either neighbor, even as it carries the lower recurring utility cost. Part of that likely reflects a different mix of what sold in each city during these windows, since a run of larger or smaller homes closing in a given quarter can swing the per-square-foot number on its own. But it also means nobody should walk into a Santa Clara purchase assuming they're getting a quiet discount on top of cheap power. The savings on the utility bill are real and they're separate from what's happening to the sale price itself, not a hidden reason the price is lower.
Running the Number for Your Own Comparison
The way to use this isn't to treat the utility gap as a reason to pick one city over another on its own. It's one more real, recurring line item to add into a side-by-side comparison that usually stops at purchase price, property tax rate, and HOA dues if there is one.
A rough way to estimate it for your own household: take your last few PG&E bills from wherever you're living now, or ask for average monthly usage on any Sunnyvale or Mountain View listing you're seriously considering, and run that kWh figure against Silicon Valley Power's published residential rate versus PG&E's current rate for the same usage tier. For a typical single-family household using more than the 411 kWh example above, the dollar gap grows proportionally, since it's a rate difference per kilowatt-hour rather than a flat monthly fee.
None of this changes what a house is worth on paper. It does change what it costs to live in one, month over month, for as long as you own it, which is a number worth having in front of you before you're comparing two offers on paper alone.
A Couple of Questions Worth Settling Early
Is Silicon Valley Power the same thing as Silicon Valley Clean Energy? No, and the distinction matters. Silicon Valley Clean Energy, or SVCE, is a separate community choice program that lets residents in cities like Sunnyvale, Mountain View, Cupertino, Campbell, and Los Gatos choose where their electricity generation comes from, while PG&E still owns and operates the poles and wires that deliver it. Silicon Valley Power is different: it's Santa Clara's own municipally owned utility, handling both generation and delivery within city limits, which is why the rate structure looks nothing like either PG&E or SVCE.
Does this gap apply to every property in Santa Clara? Silicon Valley Power serves the great majority of homes within Santa Clara city limits. Anyone under contract on a specific address should confirm the utility provider directly with the seller or on the property disclosures rather than assuming based on the city name alone, since service boundaries don't always follow city lines exactly.
Comparing Santa Clara to Sunnyvale or Mountain View on price alone tells you what you'll pay once. The utility bill tells you what you'll pay every month after that. If you're weighing these cities against each other and want help running the full comparison, not just the sale price, Georgia Phillips Realty can walk through the numbers with you before you write an offer.
