Solar Cost in El Paso, TX 2026: ~10.3–19.7-Yr Payback

Why this number

1,784 kWh per kW. That is the highest figure on this entire site — higher than Phoenix (1,688), higher than Las Vegas (1,689), and 28% higher than Houston, 750 miles away in the same state. An 8 kW array here makes 12,845 kWh a year against Houston’s 10,001, and pays back in 10.3–19.7 years against Houston’s 11.2.

Texas is not one solar market

Across the 7 Texas cities with their own modeled figures, production spans 28% — Houston at 1,389 kWh per kW to El Paso at 1,784. Every column except production is identical down this table: same 15.9¢/kWh retail rate, same export regime, same $2.25/W installed cost. The payback differences are caused by weather and nothing else.

Against the state figure, El Paso runs 23% above Texas’s 1,455 kWh per kW — a payback 0.4 years shorter than the statewide 10.7-year estimate on the same hardware at the same price.

Chihuahuan Desert, 3,800 feet

El Paso combines the three things that make a solar location exceptional: desert aridity, high sunshine hours, and enough elevation to thin the atmosphere without introducing a real winter. Cloud cover is minimal year-round and summer monsoon moisture arrives late and leaves early compared with Phoenix.

It is also cooler than Phoenix in absolute terms, which matters more than it sounds — El Paso reaches nearly the same irradiance with a smaller high-summer heat derate. That is why it edges out cities with a bigger solar reputation.

Your utility, officially

Texas’s average residential rate is 15.9¢/kWh, but the bill in El Paso comes from El Paso Electric Co at 13.46¢ — 15% below the state figure. These are the residential figures El Paso’s utility reported to the U.S. Energy Information Administration on Form EIA-861 for 2024 — computed as revenue ÷ sales from the official file, not estimated:

How exports are treated matters as much as the headline price: El Paso Electric Co is modeled here under a market where the export credit is set locally rather than by one statewide rule, and that treatment is baked into every payback figure on this page.

El Paso Electric is the reason this page can print a real electricity price while our Dallas and Houston pages cannot. EPE is a vertically integrated, investor-owned utility — it owns generation, wires, and the customer relationship — operating entirely outside ERCOT, on the Western grid. Texas’s retail deregulation never reached it, so there are no retail electricity providers here, no plan-shopping, no buyback contracts that differ by REP. The Public Utility Commission of Texas regulates EPE’s rates the old-fashioned way, and the result is an actual tariff: a 2024 average residential price of 13.46¢/kWh across 312,576 residential customers, straight from the EIA-861 file. In the deregulated four-fifths of Texas, no equivalent number honestly exists. It is also a lower figure than the 16.44¢ statewide average the headline model on this page runs on, so trim the modeled savings accordingly.

The federal data holds El Paso’s most surprising fact. EPE reported 25,266 residential net-metered customers and 133.53 MW for 2024 — about one residential customer in twelve. For comparison, Con Edison’s share is about one in forty-four and no Washington utility we track clears one in forty — El Paso reaches one in twelve at a modest 13.46¢ rate. The explanation is sitting overhead: the Chihuahuan Desert sun described elsewhere on this page, applied through a utility that actually files net-metering numbers. The average reported system is small, near 5.3 kW, which fits a market where production per panel is so high that modest arrays cover real loads.

Two cautions temper the story. First, our exportrules data classifies Texas as utility-dependent for a reason — there is no state mandate guaranteeing what exports are worth, and a board- or PUCT-approved tariff can change on filing. We were unable to reach El Paso Electric’s website from our infrastructure to verify its current rate schedules or distributed-generation terms, so we will not paraphrase them; confirm the current treatment of exported energy, and any solar-specific riders, on the utility’s own site or by phone before signing anything. Second, EPE’s service territory crosses into southern New Mexico around Las Cruces, and New Mexico runs its own export rules under its own commission — the same utility can owe two different deals depending on which side of the state line your meter sits.

The structural takeaway: El Paso is the one large Texas city where solar economics rest on a regulated tariff rather than a two-year retail contract, and its one-in-twelve adoption rate suggests residents have noticed.

Source: EIA Form EIA-861, 2024 final release , accessed 2026-09-02. Average price is total residential revenue divided by total residential sales for the year — your own rate depends on your tariff and usage tier.

An 8 kW system in El Paso, priced out

Only the first two rows differ. Everything financial — rate, tariff, price per watt — is inherited from Texas without change, which is the point: a city page that quietly used a different electricity rate from its state page would be guessing, not measuring.

Doing nothing is not free either. Twenty-five years of the electricity an 8 kW El Paso array would produce, with rates rising at 2.5% a year, comes to roughly $69,682.

Not sure solar is the right move yet? The should-I-go-solar screener asks the four questions that matter before you get a quote.

Run it with your own bill