Solar panels in Herriman: what they cost and what they make
A typical Herriman home needs 15 solar panels. They would make about 9,860 kWh a year and cost $16k to $24k before incentives. At today's electricity prices they pay for themselves in about 14.3 yrs.
See panels on your own Herriman roof
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What solar costs in Herriman
At $3.00 a watt, the median price cash buyers pay nationally, a 6.3 kW system costs about $18,900. Quotes in Herriman will usually fall between $15,750 and $23,625. Complex roofs, main-panel upgrades and financing push prices up.
The 30% federal tax credit no longer applies to systems homeowners buy. This estimate includes no state or utility incentives; check with your utility before you buy.
The number that decides whether solar pays in Herriman is what your utility pays for the power you send back. Under full payback is about 14.3 yrs. Under net billing it is about 23.4 yrs, because only the ~41% of solar a typical home uses as it is made saves the full retail price.
Cash purchase, prices rising 2.5% a year, panels losing 0.5% a year, $25/kW a year for upkeep. No federal credit for homeowner-owned systems.
Every way to pay for a 6.3 kW system in Herriman
Change any number →| Way to pay | Day one | Monthly payment | Monthly net, year 1 | Ahead after 25 years |
|---|---|---|---|---|
| Pay cash Full price on install day | $18,900 | $0 | +$95 | $19k |
| Credit-union loan 8% APR, 20 years, no dealer fee | $0 | $158 | −$63 | −$400 |
| “1.99%” solar loan 1.99% APR, 25 years, 25% dealer fee | $0 | $100 | −$5 | $7,600 |
| Lease $90/mo, +2.9%/yr | $0 | $90 | +$18 | $2,600 |
| Power purchase (PPA) 11.2¢/kWh, +2.9%/yr | $0 | $92 | +$16 | $4,300 |
Under net metering, at 13.2¢/kWh rising 2.5% a year. The “1.99%” loan’s $4,725 dealer fee is included in its payments. Lease and PPA prices are typical offers, not quotes.
How much sunshine Herriman gets
kWh per kW, 25° southJun is the best month for solar in Herriman, and Dec the weakest: a Dec day makes 45% of a Jun day. A 6 kW system would make about 454 kWh in Dec and 1,001 kWh in Jun.
On June 21 the sun rises at 5:57 am and sets at 9:02 pm, 15 hours 4 minutes of daylight. On December 21 it is up from 7:48 am to 5:04 pm, just 9 hours 16 minutes.
Peak sun hours in Herriman, month by month
| Month | Flat ground | Panels at 36° | kWh per kW |
|---|---|---|---|
| Jan | 2.2 | 3.8 | 87 |
| Feb | 3.1 | 4.6 | 99 |
| Mar | 4.5 | 5.6 | 136 |
| Apr | 5.7 | 6.1 | 147 |
| May | 6.7 | 6.4 | 160 |
| Jun | 7.8 | 7.0 | 167 |
| Jul | 7.5 | 6.9 | 165 |
| Aug | 6.6 | 6.8 | 159 |
| Sep | 5.4 | 6.7 | 147 |
| Oct | 3.8 | 5.7 | 129 |
| Nov | 2.5 | 4.3 | 95 |
| Dec | 1.8 | 3.3 | 76 |
| Year | 4.8 | 5.6 | 1,565 |
A peak sun hour is one hour of sunlight at 1,000 W per m². Why sites disagree.
The best angle and direction for panels in Herriman
| Roof faces (6/12 pitch) | Output vs south | kWh per kW |
|---|---|---|
| South | 100% | 1,565 |
| Southeast | 95% | 1,487 |
| Southwest | 95% | 1,487 |
| East | 83% | 1,299 |
| West | 82% | 1,283 |
| North | 60% | 939 |
Face panels south and tilt them 36° for the most energy over a year. East and west roofs keep about 83% of that. A north-facing roof keeps 60%, which is rarely worth the money. Try other angles.
Where the sun goes over Herriman
The noon sun is lower in winter, which is why the best winter tilt (65°) is steeper than the best summer tilt (11°).
Herriman's homes
Herriman has 17,559 households. 78.6% own their home, and 13,164 of those owners live in single-family houses, the kind of home that usually gets rooftop solar.
The median home here was built in 2013. Most roofs this young have years of life left, which makes them good candidates for solar.
13% of homes heat with electricity and 84.9% with gas. If you switch to a heat pump or an electric car, plan for more panels or leave room on the roof.
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates.
If the power goes out in Herriman
Solar panels alone shut off in a blackout. Add a battery and they keep going. One Tesla Powerwall 3 (13.5 kWh) running a fridge, freezer, furnace fan, lights, Wi-Fi, TV and microwave (6.9 kWh a day):
Change the appliances, the battery and the weather in the battery calculator.
Questions people ask about solar in Herriman
How much do solar panels cost in Herriman?
A 6.3 kW system — enough for the average Utah home — costs about $15,750 to $23,625 before incentives, based on $2.50–$3.75 per watt. The 30% federal credit no longer applies to systems homeowners buy.
How many solar panels does a house in Herriman need?
About 15 panels of 420 watts for a home using 774 kWh a month, the Utah average. Each kilowatt of panels here makes about 1,565 kWh a year on a south-facing roof.
Is solar worth it in Herriman?
Over 25 years, solar power here costs about 9.8¢ per kWh, against 13.2¢ from the grid today. Payback is about 14.3 yrs if your utility credits exported power at the full retail rate, and 23.4 yrs if it pays about 30% of retail.
How many peak sun hours does Herriman get?
5.6 a day on panels tilted to 36°, and 4.8 on flat ground. The best month is Jun; the weakest is Dec.
What is the best angle for solar panels in Herriman?
36° for the most energy over a year, facing south. 65° is best in winter and 11° in summer. On a normal pitched roof, anything within 15° of 36° gives you about 95% of the maximum.
How long would a home battery last in a Herriman power outage?
A Tesla Powerwall 3 running a fridge, freezer, furnace fan, lights, Wi-Fi, TV and microwave (6.9 kWh a day) lasts about 43 hours with no sun. With 7 kW of solar to recharge it, it gets through a three-day outage even in overcast January.
Solar near Herriman
| City | Miles | kWh per kW | Sun hours |
|---|---|---|---|
| South Jordan, UT | 5 | 1,587 | 5.6 |
| West Jordan, UT | 8 | 1,586 | 5.6 |
| Draper, UT | 8 | 1,589 | 5.6 |
| Lehi, UT | 9 | 1,594 | 5.6 |
| Sandy, UT | 11 | 1,587 | 5.6 |
Herriman shares a weather-data neighbourhood with Salt Lake City; their sunshine numbers differ by less than our data can resolve. Housing, prices and outage figures are specific to Herriman.
Cities with the same sunshine as Herriman
These far-away cities get almost exactly as much solar energy per panel.
- Lawton, OK 1,577 kWh per kW
- Wichita Falls, TX 1,576 kWh per kW
- Redding, CA 1,575 kWh per kW
Snow: NASA records about 20 cm of snow on the ground here in an average January. Covered panels make little until it slides off, and these figures (like PVWatts') don't subtract that.
Sources: NASA POWER 2001–2020 monthly climatology (grid cell 41 km from Herriman's Census point), our PV model (within 1.6% of NLR PVWatts® on average), U.S. EIA prices and use, U.S. Census 2025 population estimates and ACS 2020–2024. Estimates for an average home, not a site survey. How we calculate.