New Mexico Solar Calculator

Enter your utility and monthly bill — get system size, NM 10% state tax credit, 30% federal ITC, retail net metering savings, and 25-year payback. NM ranks 3rd in the US for sunshine.

Your New Mexico solar inputs

Monthly electric bill?

Utility company?

System size?

Battery backup?

New Mexico solar estimate

20 × 400W panels (8 kW system)

Recommended size for your bill: 6.5 kW

Monthly usage923 kWh/mo

Annual production (NM 6.0 PSH — 3rd best US)14,016 kWh/yr

Annual savings (retail net metering)$1,822/yr

Gross system cost ($2.50/W)$20,000

Federal ITC (30%)-$6,000

NM state tax credit (10%, max $6,000)-$2,000

Net cost after all incentives$12,000

Property tax exemption (est.)$4,000

Sales taxExempt in NM

Payback period6.6 yrs

25-year savings$45,552

New Mexico ranks 3rd in the US for peak sun hours (6.0 PSH avg). The 10% state tax credit (up to $6,000) stacks on top of the 30% federal ITC — one of the best combined incentive packages in the country.

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How to Use This Calculator

Enter your bill and select your utility

New Mexico has three main utilities: PNM (Public Service Company of New Mexico) serves the Albuquerque metro and central NM at around $0.13/kWh; El Paso Electric covers southern New Mexico including Las Cruces and the southern border region at around $0.12/kWh; Xcel Energy NM serves the northern and northeastern parts of the state including Santa Fe at around $0.11/kWh. Select your utility to get an accurate rate-based calculation.

Understand the double tax credit advantage

New Mexico is one of only a handful of states offering a state solar tax credit on top of the federal 30% ITC. The NM state credit is 10% of the system cost, capped at $6,000. These two credits stack — a $25,000 system qualifies for $7,500 federal ITC plus $2,500 NM state credit, cutting the net cost by $10,000 before any other exemptions. New Mexico also exempts solar systems from property tax increases and sales tax, compounding the incentive value.

Why New Mexico is exceptional for solar

New Mexico ranks 3rd in the US for peak sun hours with a statewide average of 6.0 PSH. Albuquerque averages 6.2 PSH, Las Cruces reaches 6.5 PSH, and even the cloudier northern regions around Santa Fe average 5.7 PSH. This exceptional sunshine means a given system size produces significantly more energy in NM than in most other states, resulting in faster payback despite moderate electricity rates.

The Formula

Monthly kWh = Monthly Bill ÷ Electricity Rate Annual Production = System kW × 1000 × 6.0 PSH × 365 × 0.80 efficiency ÷ 1000 Annual Savings = Annual Production × Retail Rate (NM has retail net metering) Gross Cost = System kW × 1000 × $2.50/W + Battery ($12,000 if added) Federal ITC = Gross Cost × 30% NM State Credit = min(Gross Cost × 10%, $6,000) Net Cost = Gross Cost − Federal ITC − NM State Credit Payback = Net Cost ÷ Annual Savings

New Mexico uses 6.0 peak sun hours (PSH) as a statewide average — Las Cruces gets 6.5 PSH, Albuquerque 6.2, and Santa Fe about 5.7. The calculator applies retail net metering, which NM utilities are required to offer — exported solar credits at the full retail rate, maximizing savings. At $2.50/W installed cost, New Mexico is below the national average due to a competitive local solar market and lower labor costs.

Example

Maria — Albuquerque PNM customer

Maria is in Albuquerque paying $120/month for electricity at $0.13/kWh through PNM. She wants an 8 kW system to significantly offset her usage.

Monthly bill$120 (PNM, $0.13/kWh)

System8 kW, south-facing

LocationAlbuquerque, NM (6.2 PSH)

Result

Annual production~14,016 kWh/yr

Annual savings (net metering)~$1,822/yr

Gross system cost ($2.50/W)~$20,000

Federal ITC (30%)-$6,000

NM state tax credit (10%)-$2,000

Net cost after incentives~$12,000

Payback period~6.6 years

25-year savings~$45,550

Maria's combined 40% tax credit package (30% federal + 10% state) cuts her net cost nearly in half. With 6.2 PSH in Albuquerque and retail net metering through PNM, she achieves a sub-7-year payback — exceptional for a solar investment. Her system will generate over 3.5x its net cost in savings over 25 years.

FAQ

How does the New Mexico 10% state solar tax credit work? ▼

New Mexico's Solar Market Development Tax Credit provides a 10% credit on the cost of a solar PV system, capped at $6,000 per taxpayer per year. The credit is claimed on your NM state income tax return (Form RPD-41317). It is non-refundable — meaning it can reduce your state tax liability to zero but not generate a refund. However, any unused credit can be carried forward for up to 10 years. This credit stacks with the 30% federal ITC, giving NM homeowners a combined 40% incentive on the first $60,000 of system cost. Apply through the NM Energy, Minerals and Natural Resources Department (EMNRD).

Does New Mexico have net metering? ▼

Yes — New Mexico law requires utilities to offer retail-rate net metering to residential solar customers. When your panels produce more electricity than you use, the surplus is credited at your full retail rate (not a lower wholesale rate). Credits accumulate month-to-month and are settled annually. This means your solar panels are effectively worth your full electricity rate for every kWh produced, whether consumed on-site or exported. Net metering applies to systems up to 80 kW, which covers all residential applications. Note: Net metering policies can change — confirm current terms with your utility before installation.

Are solar panels exempt from property tax in New Mexico? ▼

Yes — New Mexico provides a 100% property tax exemption for solar energy systems. The added value a solar system brings to your home is not included in your assessed property value for tax purposes. New Mexico property tax rates average about 1.0% of assessed value, so a $20,000 solar system saves approximately $200/year in property taxes — about $4,000 over 20 years. This benefit is automatic and does not require a separate application. New Mexico also exempts solar equipment from gross receipts tax (sales tax), typically 5-8%, saving $1,000-2,000 on installation.

Why is New Mexico so good for solar? ▼

New Mexico ranks 3rd in the US for solar resource with a statewide average of 6.0 peak sun hours (PSH) per day. Only Arizona (6.5 PSH) and Nevada (6.3 PSH) rank higher. Las Cruces in the south averages 6.5 PSH, Albuquerque 6.2 PSH, and even northern Santa Fe averages 5.7 PSH. This exceptional sunshine — combined with a 40% combined tax incentive package, retail net metering, property tax exemption, and sales tax exemption — makes New Mexico one of the most financially compelling states for solar in the nation. The dry climate also means less panel soiling and longer system lifespan.

What solar programs does PNM offer? ▼

PNM (Public Service Company of New Mexico) offers retail net metering to qualifying residential customers. Under PNM's net metering program, excess generation is credited at the retail rate and applied to future bills. PNM also has a Solar 4 All community solar program for customers who cannot install rooftop solar. For battery storage, the 30% federal ITC covers batteries added with solar. PNM customers should confirm net metering interconnection requirements — systems must be UL-listed and inspected. Contact PNM's renewable energy team for current rates and interconnection timelines, which can take 4-12 weeks.

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