Updated: September 10, 2026. Editorial update by Ask Solar Mike.
Short answer from Ask Solar Mike, a Utah Tesla solar and Powerwall 3 specialist : Tesla solar panels run $3.35 per watt installed → $2.35 per watt after PPA incentives, and a Tesla Powerwall 3 is $16,000 installed → $11,200 after the 30% pre-paid PPA instant rebate → $9,200 after the $2,000 Wattsmart rebate for Rocky Mountain Power customers . Gross price first, net price second — always in that order, so a discounted number never masquerades as the sticker . The package math, and which incentives are actually real in 2026, is below.
Manufacturer product image supplied by Tesla; not a photograph of an Ask Solar Mike installation.
What do Tesla solar panels cost per watt in Utah?
From Ask Solar Mike: standard solar is $3.00 per watt installed; Tesla solar panels add $0.35 per watt, making Tesla solar $3.35 per watt installed → $2.35 per watt after PPA incentives . We publish these the same way every time — gross first, then "after incentives" — because a per-watt net shown alone is how solar ads mislead . We position at the high end on quality, not at the bottom on price, and we would rather show you the honest number than the smallest one .
What does adding a Powerwall 3 cost?
A Tesla Powerwall 3 is $16,000 installed → $11,200 after the 30% pre-paid PPA instant rebate → $9,200 after the $2,000 Wattsmart rebate, and that last $2,000 applies to Rocky Mountain Power customers only . What you get for it, per Tesla's public datasheet: 13.5 kWh usable energy, 11.5 kW continuous output, 48 A maximum continuous current, a 185 LRA motor-start rating, and an integrated solar inverter accepting up to 20 kW DC . That is whole-home-class hardware, which is why our packages pair it with the array rather than treating backup as an accessory .
What do complete packages look like?
The table below is illustrative arithmetic from the per-watt and per-unit prices above — it is not a quote, and a site-specific quote and load review are required . All rows use Tesla solar panels at $3.35/W installed plus one Powerwall 3 at $16,000 installed, then apply the 30% pre-paid PPA instant rebate to the gross example total . The displayed $2.35/W solar rate is rounded; package totals use the exact 30% calculation .
| Example package | Installed (gross) | After incentives | After incentives — RMP customers (adds $2,000 Wattsmart on the battery) |
|---|---|---|---|
| 6 kW Tesla solar + 1 Powerwall 3 | $36,100 | $25,270 | $23,270 |
| 8 kW Tesla solar + 1 Powerwall 3 | $42,800 | $29,960 | $27,960 |
| 10 kW Tesla solar + 1 Powerwall 3 | $49,500 | $34,650 | $32,650 |
Larger homes often pencil toward a second battery; the sizing logic — continuous load, motor starts, service rating — is in our whole-home backup guide . Your array size comes from your usage and your roof, not from this table — a site-specific quote and load review are required .
The examples exclude the separate $2,000 Ask Solar Mike Same-Day Decision Credit, which applies only when the agreement is signed at the first appointment . Standard pricing applies if you decide later . Utility eligibility and a site-specific quote must be confirmed.
Which incentives are actually real in 2026?
Start with the one that is gone: the federal Section 25D residential clean energy credit is not available for expenditures made after December 31, 2025 (IRS) . Any 2026 ad whose "net" price still assumes that credit is quoting you a discount a cash buyer cannot claim . What remains flows through third-party ownership: under a PPA structure, the system's commercial owner claims the federal credit available on its side of the ledger (Section 48E) on its own equipment, and our pricing passes that through as the 30% pre-paid PPA instant rebate you see in every ladder on this page . The other real one is utility-specific: the $2,000 Wattsmart battery rebate, for Rocky Mountain Power customers only . Utility service in south Utah County varies by address — Payson, Spanish Fork and Salem run their own city power in parts of town, SESD serves others, and some pockets are Rocky Mountain Power — so we confirm your serving utility as step one . Lehi and Provo run municipal utilities, so Wattsmart does not apply at those addresses .
What should you compare besides the package total?
Compare the actual battery model and quantity, backed-up circuits, expected energy use, solar production assumptions, electrical work, monitoring and warranty responsibilities . A lower total may reflect a different scope. Use the Tesla proposal comparison worksheet and the dated Utah cost guide.
Who is behind this page?
Ask Solar Mike is a licensed Utah contractor (DOPL #14015846-5501) and a Tesla Certified Installer — verify the current status in Tesla's public installer directory . The team behind Ask Solar Mike brings 2,000+ Tesla solar and battery installs of combined experience . Ask Solar Mike has a 4.9-star Google rating from 46 reviews . Every system design is produced and reviewed by a licensed engineering firm .
Quick answers as you compare quotes
Is the federal residential tax credit still available for 2026 purchases?
No — the federal Section 25D residential credit is not available for expenditures made after December 31, 2025 (IRS) . In 2026, federal incentive value reaches homeowners through third-party-ownership structures like the PPA, which is how the 30% pre-paid PPA instant rebate in our pricing works .
Why do you show the gross price first?
Because a net number shown alone reads as the sticker price, and it is not . Every ladder on this page runs gross → after incentives, in that order, with the incentive's conditions named .
How is the $3.35/W Tesla-panel price built?
Standard solar is $3.00/W installed, and Tesla solar panels add $0.35/W, producing the $3.35/W gross installed price and $2.35/W after PPA incentives .
Do these prices change if I'm not a Rocky Mountain Power customer?
Only the last step: the $2,000 Wattsmart rebate applies to Rocky Mountain Power customers only, so a municipal-utility home's Powerwall 3 lands at $11,200 after the 30% pre-paid PPA instant rebate rather than $9,200 . In south Utah County, utility service varies by address, so confirm your serving utility from your bill as step one .
Ready to discuss your home?
Book a design consultation, or visit Ask Solar Mike and ask Sarah in the chat. Bring your electricity usage, existing solar details and outage priorities.
Sources
- Tesla Powerwall 3 Datasheet, 2025 edition (13.5 kWh usable; 11.5 kW continuous; 48 A max continuous current; 185 LRA; up to 20 kW solar input; read 2026-08-30): energylibrary.tesla.com — Powerwall 3 Datasheet
- Rocky Mountain Power Wattsmart Battery program terms, effective June 15, 2026 ($2,000 enrollment incentive for a single battery 10 kW or larger; RMP customers only; read 2026-08-30): rockymountainpower.net — Wattsmart Battery
- IRS — Residential Clean Energy Credit (Section 25D termination for expenditures after December 31, 2025; re-verified 2026-08-30): irs.gov — Residential Clean Energy Credit
