Three vetted installers keep real operations in San Antonio, and the one fact that reshapes every quote here: this city runs on CPS Energy, so the deregulated-Texas advice filling the internet mostly does not apply to your house. Judge installers on their CPS paperwork fluency, their published licence, and where their office actually sits.
San Antonio is one of the loudest solar sales markets in the country, and much of the pitch material is written for the wrong Texas: the deregulated one, where you pick a retail electricity provider and shop buyback plans. That is Dallas and Houston. Here, one municipal utility runs the show, and installer quality shows up in paperwork and addresses, not ad spend. These are the 3 companies that cleared our checks.
CPS Energy Country: San Antonio Solar Is Not Like the Rest of Texas
- One utility, its own rules. CPS Energy is the nation’s largest municipal power utility, and San Antonio is not part of deregulated Texas. There is no retail provider to shop and no buyback-plan roulette; there is CPS’s own program for crediting solar customers, set by CPS and changeable by CPS. Make every proposal show the current terms, dated.
- The utility grades installers too. CPS structures rebate treatment around installer conduct, including how fast warranty service happens. Ask any bidder how they stand with CPS’s program and how many CPS interconnections they filed in the last year. Fluency here is the single best local quality signal.
- Price anchor: Texas carries one of the lowest competitive installed prices we track, $2.44 per watt before incentives, which puts an 8 kW system near $19,500. A San Antonio quote far above that owes you a specific reason.
Three Installers With Real San Antonio Addresses
Longhorn Solar
The strongest local footing on this list: a staffed San Antonio office on Network Boulevard, a published electrical licence you can verify with the state, and 25-year performance and workmanship warranties published on its own site. A Texas-only company whose service radius includes your street is exactly what year-6 you will want.
Freedom Solar Power
Freedom runs a walk-in design center off Loop 410, a come-to-us model its own leadership describes as the opposite of door knocking, and installs a premium panel-plus-microinverter line. Its own materials note that CPS rewards installers who deliver warranty service within 48 hours; ask Freedom to put its own response commitment in your contract.
Momentum Solar
Momentum brings in-house installation crews and multi-state depth to a market where scheduling backs up every summer. Hold it to the local bar: CPS program terms in the proposal, the Texas electrical licence number on request, and a named service arrangement for the years after the install.
The San Antonio Bench, Compared
Installer | San Antonio presence | Licence shown | What stands out |
|---|---|---|---|
Longhorn Solar | Staffed office, Network Blvd | TECL#27514 | 25-yr performance + workmanship |
Freedom Solar Power | Walk-in design center, Loop 410 | On request | Premium equipment line |
Momentum Solar | TX operations | On request | In-house crews at scale |
Your CPS terms, your roof and the $2.44 per watt anchor are checkable before anyone visits. Enter your ZIP code and we will run them for your address.
Line up San Antonio quotes from real local offices
Where San Antonio Quotes Go Wrong
Make Every San Antonio Pitch Answer These
Show me CPS Energy’s current solar terms inside this proposal.
How many CPS interconnections did you file in the last 12 months?
What is your Texas electrical licence number?
What does my price per watt come to before incentives?
How We Rank Solar Companies
Rankings are built from what we can verify, never from who pays us. For San Antonio, five weighted factors:
Frequently Asked Questions
Longhorn Solar, Freedom Solar Power and Momentum Solar make up our vetted San Antonio network for 2026. Longhorn ranks first for its staffed San Antonio office, published TECL licence and 25-year performance and workmanship warranties.
Texas’s competitive installed price is $2.44 per watt before incentives, per the EcoGen Solar Cost Index, among the lowest we track. That puts an 8 kW San Antonio system near $19,500 and a 10 kW near $24,400 before batteries or roof work.
CPS Energy runs its own program for crediting solar customers, set by the utility rather than by deregulated-market buyback plans. Terms can change by CPS decision, so ask your installer to include the current program document, dated, with your proposal.
No. San Antonio is served by CPS Energy, a municipal utility, so you do not choose a retail electricity provider and buyback-plan shopping does not apply. Solar advice written for Dallas or Houston needs translating before it fits a CPS bill.
Not for systems you buy outright: the 30% Section 25D credit ended for installations completed after December 31, 2025. Leases and power purchase agreements can still capture a commercial credit through the system’s owner. Texas adds a property-tax exemption for the value solar adds to your home.
Looking statewide? Our Texas company rankings cover the whole market, and the Texas cost guide carries the price arithmetic behind this page.
Skip the sales circuit. Enter your ZIP code and start from installers with verified local addresses.
Start with verified San Antonio addresses
Sources
References & Research Sources
EcoGen America reviewed CPS Energy customer and solar program resources, Texas Department of Licensing and Regulation electrical licensing records as published by each company, installer office, warranty and service-area disclosures published by the companies themselves, Texas tax guidance, and federal tax guidance for this article. Sources were accessed August 13, 2026, unless another date is listed below.
- CPS Energy. Residential Solar and Distributed Generation Resources. Municipal utility resource for San Antonio customers. Accessed August 13, 2026.
- Longhorn Solar. Company Licence, Office and Warranty Resources. Installer-published Texas information, including TECL#27514 and the San Antonio office. Accessed August 13, 2026.
- Freedom Solar Power. San Antonio Design Center and Service Resources. Installer-published Texas information. Accessed August 13, 2026.
- Momentum Solar. Company Service Area Resources. Installer-published multi-state coverage information. Accessed August 13, 2026.
- Texas Comptroller of Public Accounts. Renewable Energy Property Tax Exemption Guidance. State tax guidance. Accessed August 13, 2026.
- Internal Revenue Service (IRS). FAQs for Modification of Sections 25C, 25D, 25E, 30C, 30D, 45L, 45W and 179D under Public Law 119-21. Federal guidance confirming termination of the residential clean energy credit for installations completed after December 31, 2025. Accessed August 13, 2026.
