New Mexico Solar Incentives, Cost & Payback (2026)
Written by Aditya Patil · Last updated 2026-09-24
With plenty of sunshine, relatively low installation prices, and a straightforward 1:1 net metering program, going solar in New Mexico is highly advantageous for homeowners looking to eliminate their electric bills.
$121
Avg. monthly bill
15.06¢/kWh
Avg. rate
$4.62/W
Real installed cost
LBNL Tracking the Sun
14 yrs
Est. payback
typical household
Cost of solar in New Mexico
The real median installed cost for a home solar system in New Mexico sits at $4.62/watt. A typical installation comes in at 6.8 kW, setting the gross cost around $30,900 before considering state tax incentives.
For a typical household running through 9,659 kWh each year, you'd need approximately a 5.33 kW setup. That puts your gross price at roughly $24,631. However, New Mexico's state tax credit of up to 10% (capped at $6,000) brings your effective out-of-pocket cost down to about $22,168.
Solar only
Benefiting from full 1:1 net metering, you bank all your excess afternoon power to use at night.
$1,455 / yr
14-year payback · $49,590 over 25 years
Since New Mexico offers 1:1 net metering for most homes, adding a battery doesn't significantly shorten your payback period unless you need it for backup power during outages.
Incentives & rebates
New Mexico offers a direct state-level tax credit to significantly lower the financial barrier to solar adoption.
| Program | Amount | Status |
|---|---|---|
| New Solar Market Development Tax Credit (SMDTC) | Up to 10% of the equipment, materials, and labor costs of a solar energy system, capped at a maximum of $6,000 per system, for solar energy systems installed in 2024 and after. | open |
Net metering / export rules
New Mexico has an excellent, homeowner-friendly net metering policy regulated by the Public Regulation Commission (PRC). The rules are split into two size tiers. For systems up to 10 kW (which covers almost all standard residential properties), utilities are required to carry forward any excess energy you produce as a kWh credit on your account indefinitely. You essentially get full retail value for your solar power.
Your banked kWh credits are only ever cashed out at the lower avoided-cost rate (PNM's Rate 12) if you permanently close your utility account. Meanwhile, larger systems (over 10 kW) receive a direct cash payment for monthly overproduction, also calculated at the avoided-cost rate instead of rolling over.
| Policy | Net Metering / Net Billing |
| System size limits | Up to 10 kW gets kWh rollover; >10 kW paid out monthly at avoided cost |
| Credit rollover | kWh credits roll over indefinitely for systems up to 10 kW |
| True-up / Cash out | Only occurs when the account is closed, paid at avoided cost (Rate 12) |
No single statewide or utility-specific cents-per-kWh export rate could be confirmed from a primary source in this research. PNM's own solar program page states that credits for systems up to 10 kW roll forward as kWh (not cash) and are only cashed out at account closure using PNM's Rate 12 tariff; systems over 10 kW are paid monthly at that same tariff basis. The exact current Rate 12 cents/kWh value is published in PNM's Rate 12 tariff PDF (linked from pnm.com/rates) but was not extracted as machine-readable text in this research pass. El Paso Electric's and Southwestern Public Service (Xcel Energy)'s NM-specific net metering tariff pages could not be accessed in this research (El Paso Electric's site returned repeated 403 errors; Xcel Energy's rate-book navigation did not surface a New Mexico-specific rate page) — both utilities are subject to the same statewide 17.9.570 NMAC rule as PNM, but their utility-specific credit rates are unverified here.
Top utilities
| Utility | Residential rate | Customers |
|---|---|---|
| Public Service Co of NM | 15.57¢/kWh | 492,945 |
| Southwestern Public Service Co | 11.98¢/kWh | 100,540 |
| El Paso Electric Co | 10.16¢/kWh | 94,760 |
Estimate your own numbers
Our estimates reflect New Mexico's state averages. See exactly what solar would look like for your home with the solar calculator.
FAQ
Is solar a good investment in New Mexico?
Yes, very much so. With an average installed cost of $4.62/W and strong 1:1 net metering policies that allow you to roll over excess generation as kWh credits indefinitely, payback periods are very competitive. Plus, the 10% New Solar Market Development Tax Credit lowers your upfront cost even further.
How does net metering work for homeowners in New Mexico?
For residential systems up to 10 kW, utilities like PNM apply 1:1 net metering. Any excess energy you produce is banked as kWh credits on your account and carries forward infinitely. You are only cashed out at the lower avoided-cost rate if you ever close your account.
What solar incentives are available in New Mexico?
New Mexico offers the New Solar Market Development Tax Credit (SMDTC), which covers up to 10% of your system costs, capped at $6,000. You must obtain an eligibility certificate from the EMNRD to claim this on your state taxes.
Data sources
Last updated 2026-09-24
- U.S. Energy Information Administration — Electricity Data Browser — accessed 2026-09-24
- NREL PVWatts — accessed 2026-09-24
- NREL Solar Resource Data — accessed 2026-09-24
- LBNL Tracking the Sun (public data file, host-owned residential systems) — accessed 2026-09-24
Written by Aditya Patil