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Plug-in solar in New Mexico

No — New Mexico's bill was defeated in 2026

  • SB 157 postponed indefinitely in 2026

Last verified

Status
Bill defeated
Bill
SB 157
Signed
—
Effective
—
Size cap
—
Avg. electricity rate
16.09¢/kWh (-12% vs US)

800 W kit · typical year

$200saved

Payback ≈ 4.5 yrs · ranks #10 of 51 for savings

New Mexico's SB 157 was postponed indefinitely in 2026. That's a missed opportunity: New Mexico has some of the best solar resource in the country.

What plug-in solar is worth in New Mexico

New Mexico households pay an average of 16.09¢ per kWh, 12% below the US average of 18.31¢. With roughly 6.2 peak sun hours a day, here is what a well-placed system produces and saves. We assume panels facing south at about 30°, 86% system efficiency and 80% of output used on-site.

800 W kit (2 panels)

Saved per year
$200
Payback ($900 kit)
4.5 yr
Energy used
1,246 kWh/yr
25-year net
$4,110

1,200 W kit (max)

Saved per year
$301
Payback ($1,300 kit)
4.3 yr
Energy used
1,868 kWh/yr
25-year net
$6,215

Run your own numbers

Change the orientation, mounting and size to match your balcony.

800 W
80%

Plug-in systems aren't net-metered: surplus sent to the grid earns nothing. ~80% is typical without a battery; 95%+ with one.

Estimated savings · New Mexico

$200/ year

≈ $16.70 per month

Payback
4.5 yrs
Energy used
1,246 kWh/yr
25-year net
$4,110
CO₂ avoided
1,009 lb/yr

Monthly savings profile

Estimates only. Rate: EIA July 2026 state average; sun hours: long-term averages. See our methodology.

What to do now

  1. 1Don't connect a grid-tied plug-in system yet — without a law, it may breach your utility agreement.
  2. 2Consider an off-grid setup in the meantime: a panel charging a portable power station is legal everywhere.
  3. 3Cut your bill today with no-cost measures — see our guide to lowering your electric bill.
  4. 4Contact your New Mexico state legislators: constituent support is what moved the 2026 bills.

New Mexico plug-in solar FAQ

Is plug-in solar legal in New Mexico?

Not yet. A plug-in solar bill was killed or stripped this session. Without a law, connecting a grid-tied plug-in system may violate your utility's interconnection rules. Off-grid setups (a panel charging a portable power station) are allowed everywhere.

How much can balcony solar save in New Mexico?

At New Mexico's average residential rate of 16.09¢/kWh (EIA, July 2026) and about 6.2 peak sun hours a day, a south-facing, tilted 800 W kit saves roughly $200 a year, paying back a $900 kit in about 4.5 years. Vertical railing mounts produce about 30% less.

What is the maximum plug-in solar size in New Mexico?

There is no New Mexico-specific cap yet. Most state laws settle on 1,200 W, the practical limit for a standard 15-amp, 120 V circuit.

Sources

Not legal advice. Laws and effective dates can change; confirm with official New Mexico sources and your utility.