Solar Calculators for Salt Lake City, Utah

Free tools with illustrative Salt Lake City planning inputs. Replace energy rates and installation costs with your bill and written quote.

Quick answer

Start with your exact utility account and roof design. The 5.2 sun hours and 10.0 cents/kWh below are planning assumptions, not verified current rates for Salt Lake City. Confirm Rocky Mountain Power eligibility and export settlement.

Notes updated 2026-07-26

Best for: Salt Lake City homeowners comparing a proposal or estimating savings before calling installers.
Inputs needed: 12-month kWh usage, roof shade, Rocky Mountain Power, quoted $/W
Formula used: Local production = system kW × local peak sun hours × 365, then adjusted for losses.
Method references: NREL PVWatts, Rocky Mountain Power, Utah incentive rules

Peak sun hours

5.2

hrs/day planning assumption

Illustrative energy rate

10.0¢

per kWh (Rocky Mountain Power)

Typical install cost

$2.7/W

planning assumption, not a market median

Net metering policy: Full retail net metering ✓

What Salt Lake City homeowners should check

Salt Lake City receives strong high-desert sun along with snow, winter inversions, dust, and large temperature swings. Proposals should account for snow loading, soiling, roof condition, and shading from nearby mountains or trees.

Rocky Mountain Power serves most local addresses. Confirm the current export-credit schedule and interconnection requirements because older full-retail assumptions may overstate savings.

At the state level, Utah currently uses net billing (export at ~70% of retail). A typical interconnection takes 4–8 weeks, but utility review and local permitting can extend that range. Check current rules before relying on a proposal's export-credit or installation-date assumptions.

What should I verify before signing a solar contract in Salt Lake City?

Confirm that the quote names your actual utility, uses a recent electricity rate, includes measured shade and roof-condition findings, and explains who handles permits and interconnection. Ask the installer to separate guaranteed equipment and workmanship terms from estimated production, incentives, and savings.

Illustrative 8 kW system in Salt Lake City

Annual production

13,046 kWh

Retail-value ceiling

$1,305

System cost (est.)

$21,600

Energy-only cost/value ratio

~17 yrs

Illustrative 5.2 peak sun hours, 14.08% production losses, 10.0 cents/kWh and $2.7/W. The retail-value ceiling assumes every kWh earns retail value; lower export credits reduce it. The cost/value ratio is not a full payback model and excludes repairs, financing and rate changes. No new Section 25D homeowner credit in 2026.