How does CPS Energy's net billing work for solar?

CPS Energy uses a two-tier net billing structure. Solar generation up to your customer's monthly electricity usage is credited at the full retail rate — approximately $0.12 per kilowatt-hour. Any solar generation that exceeds monthly usage is credited at the avoided cost rate, which currently ranges from 2 to 4 cents per kilowatt-hour. This creates a strong incentive to size the solar system to match — not exceed — monthly consumption, and to pair it with battery storage to maximize the higher-value self-consumption window rather than exporting excess at the low avoided-cost rate.

Is there still a CPS Energy solar rebate in 2026?

The CPS Energy residential solar rebate program is depleted as of 2026 — the designated funding has been exhausted and the program is not accepting new residential applications. The commercial solar rebate remains active: $0.60 per AC watt for the first 25kW, with a maximum project incentive of $80,000 (or 50% of costs, whichever is less). All installations must use a CPS Energy Registered Contractor to qualify for any CPS programs.

What electrical code does San Antonio use for solar in 2026?

San Antonio uses NEC 2020 as the working electrical standard for solar permits in 2026. San Antonio Development Services enforces electrical codes with local amendments separate from the NCTCOG (North Central Texas) process. NEC 2026 adoption will likely follow the state adoption timeline with local amendments — verify the current code with San Antonio Development Services for any project submitted after Q3 2026.

Does San Antonio require a PE stamp for residential solar?

Texas has no statewide PE stamp requirement for residential solar. San Antonio Development Services does not require a PE stamp for standard residential rooftop solar installations. Commercial projects, ground-mount systems, and systems above 10kW may require additional engineering documentation. Confirm with Development Services for the specific project.

Is battery storage worth it for San Antonio solar customers?

Yes — more so than in most Texas markets. CPS Energy's two-tier net billing structure pays retail rate ($0.12/kWh) for solar consumed on-site but only 2 to 4 cents per kilowatt-hour for excess exports. Battery storage that captures midday solar generation and dispatches it during evening peak avoids buying expensive grid power while maximizing the portion of solar credited at the higher retail rate. With the residential rebate depleted, battery ROI is the primary financial lever for San Antonio customers in 2026.

How long does a CPS Energy solar interconnection take?

CPS Energy solar interconnection typically takes 4 to 6 weeks. All systems must use a CPS Energy Registered Contractor and submit a CPS generator application alongside the city building permit. Permit Design formats the plan set for simultaneous Development Services permit submission and CPS Energy interconnection application.

What NEC edition does Texas use for solar permits?

Texas auto-adopts each new NEC edition on September 1 of the publication year. NEC 2023 became the Texas state electrical code on September 1, 2023. Most major Texas AHJs including Houston, Dallas, Austin, Fort Worth, and San Antonio are enforcing NEC 2023. Some smaller jurisdictions may still reference NEC 2020. Verify the adopted edition with your specific AHJ before submission — Texas has no statewide enforcement mechanism, so local adoption varies.

Does Texas have a statewide solar permitting process?

No. Texas has no statewide solar permitting process. Solar installation permits are managed entirely at the local level across 254 counties and hundreds of individual municipalities. Requirements vary dramatically from city to city — Houston, Dallas, Austin, and San Antonio all operate distinct permitting systems with different portals, timelines, and documentation requirements. Some rural Texas counties have minimal requirements; others exceed standard codes.

What is SB 1202 and how does it help Texas solar installers?

Texas SB 1202 allows solar installers to bypass a difficult local AHJ by using a state-approved third-party inspection and permitting pathway. This is particularly valuable in high-friction jurisdictions like Irving, where some installers have avoided projects entirely due to requirements exceeding standard codes. Under SB 1202, a licensed third-party inspector reviews and approves the permit, bypassing the local building department. Permit Design plan sets are built to support the SB 1202 pathway.

What is SB 1036 and how does it affect Texas solar installers?

Texas SB 1036 (Residential Solar Retailer Regulatory Act) established comprehensive regulations for residential solar sales in Texas. Contract provisions took effect September 1, 2025, requiring all solar contracts to display the licensed electrical contractor's name and TDLR license number, and giving homeowners a mandatory five-business-day cancellation window. Full registration with TDLR is required by September 1, 2026. All Texas solar retailers and salespersons must be registered to legally operate after that date.

Do Texas solar permit plan sets require a PE stamp?

Texas has no statewide PE stamp requirement for solar. Requirements are determined by each local AHJ. Houston requires structural and electrical PE stamps for commercial installations and residential systems over 10 kW. Dallas requires PE stamps for most commercial systems and emphasizes sequential review across building, electrical, and fire departments. Austin requires PE stamps for systems over 10 kW. San Antonio requires a city-registered master electrician for electrical permit applications. Gulf Coast installations face additional hurricane-zone structural requirements (130–160 mph wind rating).

How long does solar permitting take in Texas?

The statewide median Texas solar permit timeline is approximately 28 days from application to approval. Austin offers same-day in-person permitting for qualifying complete submissions. San Antonio typically runs 5–10 business days after CPS Energy interconnection approval. Houston processes through the ePlanning portal in 5–15 business days. Dallas uses a sequential review process across multiple departments, typically 10–20 business days. Irving and some North Texas municipalities are known for longer review times — SB 1202 third-party pathway is recommended for high-friction jurisdictions.

What is ERCOT and how does it affect Texas solar interconnection?

ERCOT (Electric Reliability Council of Texas) manages the electric grid for approximately 90% of Texas. Unlike other US states, Texas operates an independent grid not connected to the Eastern or Western Interconnection. In ERCOT territory, customers choose their Retail Electric Provider (REP) for deregulated markets, while Transmission and Distribution Utilities (TDUs) — Oncor, AEP Texas, CenterPoint Energy, TNMP — handle the physical grid and solar interconnection applications. In non-ERCOT territory (El Paso, parts of East Texas), municipal utilities or co-ops manage interconnection directly.

What utilities require interconnection documentation in Texas solar permit plan sets?

Texas solar permit plan sets require interconnection documentation specific to the project's Transmission and Distribution Utility (TDU). Major Texas TDUs include Oncor (Dallas/Fort Worth/West Texas), AEP Texas (West and Coastal Texas), CenterPoint Energy (Houston area), Entergy Texas (Southeast Texas), and TNMP (Northeast Texas). Austin Energy and CPS Energy (San Antonio) are municipal utilities with their own distinct interconnection processes. Each TDU has specific requirements for solar plan sets and interconnection applications.

How does Austin Energy's solar permitting process work?

Austin Energy requires completion of a Distributed Generation Planning Application before the City of Austin will issue a building permit. Austin Energy reviews the interconnection application first — systems meeting specific criteria (typically over 10 kW or on commercial properties) require utility approval before the city permit process begins. Once Austin Energy approves, the City of Austin offers same-day in-person permitting for qualifying projects with complete, PE-stamped documentation. Austin Energy also offers a Value of Solar tariff at 9.91¢/kWh plus a $2,500 rebate for qualifying residential systems.

What are Texas wind load requirements for solar permit plan sets?

Wind load requirements for Texas solar permit plan sets vary significantly by location. Gulf Coast installations (Houston, Corpus Christi, Galveston area) require hurricane-zone engineering with wind speed ratings of 130–160 mph per ASCE 7-22. Inland Texas installations (Dallas, Austin, San Antonio) require standard ASCE 7-22 wind load calculations accounting for severe thunderstorm and tornado exposure. West Texas installations face high wind exposure from open terrain. Structural calculations addressing the specific local wind exposure category must be included in every Texas solar permit plan set.

What is the Texas property tax exemption for solar?

Texas provides a 100% property tax exemption for the added value of solar energy systems. This means the appraised value of a Texas property does not increase due to the installation of a solar PV system, regardless of system size or value. On a $23,500 solar system, this saves Texas homeowners $9,500–$13,000 in property taxes over a 25-year system life. This exemption applies statewide and does not require AHJ approval — it's automatic once the system is installed.

How long does it take to get a Texas solar permit plan set from Permit Design?

Permit Design delivers Texas solar permit plan sets within 24–48 hours of receiving your project details. Every Texas plan set is built to the NEC edition adopted by your specific AHJ (NEC 2023 for most major cities), formatted to your city's submittal requirements, and includes TDU-specific interconnection documentation. Rush same-day delivery is available. If your Texas AHJ requests revisions, we handle them at no extra charge — including the SB 1202 third-party pathway if required.

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Bexar County · NEC 2020 · CPS Energy Net Billing · Municipal Utility

San Antonio Solar
Permit Design.
CPS Energy Net Billing.
Battery Saves the Good Tier.

San Antonio solar permit drawings and plan sets for City of San Antonio and all Bexar County AHJs. CPS Energy credits solar at full retail up to your monthly usage — then drops to 2–4¢/kWh for any excess. Battery keeps more generation in the high-value tier. Residential rebate depleted. Commercial still active. Free for first-time clients.

⚡ Order Your San Antonio Plan Set CPS Energy Net Billing Explained ↓

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CPS Energy formatted

NEC 2020 · Bexar County

Free AHJ revisions

~$0.12/kWhCPS Energy Tier 1 — full retail credit up to monthly usage

2–4¢/kWhCPS Energy Tier 2 — avoided cost for excess generation

$0.60/WCPS commercial solar rebate — still active up to 25kW in 2026

24–48 hrStandard residential plan set delivery

2026 Codes Electrical: NEC 2020 (Texas working standard) Structural: IBC 2021 / IRC 2021 Utility: CPS Energy net billing · Tier 1 retail / Tier 2 avoided cost Federal credit: 25D expired Dec 31, 2025 Last verified July 2026

The CPS Energy Two-Tier Structure

CPS Energy Pays Full Retail Up to Your Monthly Usage. After That, the Rate Drops to 2–4¢/kWh. Battery Is the Tool That Keeps More Generation in the Good Tier.

CPS Energy's net billing is better than most ERCOT deregulated programs — but it's not traditional net metering. Solar up to monthly consumption credits at full retail. Anything beyond that earns 2 to 4 cents per kilowatt-hour. System sizing and battery strategy are very different here than in a net metering market.

Tier 1Generation ≤ Monthly Usage — Full Retail Credit

~$0.12/kWh

Full retail rate credited · Every kWh offsets grid purchase at retail

✅Solar generation up to monthly consumption credited at full retail

✅Best outcome: solar sized to match consumption, battery dispatches during evening peak

✅No export value gap — every generated kWh in this tier avoids a full retail purchase

✅Battery stores midday excess and dispatches evening peak — stays in this tier

Tier 2Generation > Monthly Usage — Avoided Cost Export

2–4¢/kWh

Avoided cost rate only · $0.02–0.04/kWh for net excess generation

⚠️Generation beyond monthly usage earns avoided cost only — ~3–6× less than retail

⚠️Oversizing the system pushes more generation into this tier

⚠️Residential rebate depleted — no CPS rebate for new residential applications in 2026

✅Commercial rebate active: $0.60/W up to 25kW · Maximum incentive $80,000

⚠️ CPS Energy requires a Registered Contractor for all solar installations. Non-registered contractors cannot submit CPS interconnection applications. Verify your contractor registration with CPS Energy before committing to an installation timeline — registration processing takes time if it's not current.

Why San Antonio Installers Outsource

Oversized Systems Hurt Customers. Depleted Residential Rebate Changes the Conversation. CPS Registration Is Non-Negotiable.

📊

Oversizing Pushes Generation Into the 2–4¢/kWh Tier — Customers Don't Always Understand That

Under CPS net billing, any generation beyond monthly consumption earns 2 to 4¢/kWh. An oversized system wastes money that should go to battery storage instead. The right San Antonio system matches consumption — battery captures midday excess and dispatches evening peak, maximizing Tier 1 credit across the full billing month.

💰

The Residential Rebate Is Gone — Commercial at $0.60/W Is the Active Program in 2026

CPS residential rebate funding is exhausted — no new residential applications in 2026. The commercial rebate remains active: $0.60/W up to 25kW, capped at $80,000 or 50% of costs. Commercial customers still have a meaningful incentive. Residential customers should lead with Tier 1 economics, battery storage, and the Texas property tax exemption.

📋

CPS Energy Registered Contractor Status Must Be Active Before Submitting Any Interconnection Application

CPS requires all installations by a Registered Contractor — and the interconnection application must come from that contractor. An unregistered contractor can't submit the CPS generator application — which blocks interconnection entirely. We confirm registration status before building and format the CPS documentation accordingly.

San Antonio Solar Permit Services

CPS Formatted. NEC 2020. Two-Tier Net Billing. All Bexar County AHJs.

🏠

San Antonio Residential Solar Permit Design

NEC 2020, IBC/IRC 2021. CPS Energy generator application and interconnection package formatted for registered contractors. Net billing Tier 1/Tier 2 documentation. System sizing notes for optimal Tier 1 utilization. Battery (NEC 2020 Article 706) standard for maximizing self-consumption.

NEC 2020CPS FormattedTier 1 Optimized

Residential Solar Permit Design Services →

🏗️

San Antonio Commercial Solar Permit Design

Commercial rooftop permit drawings for Bexar County. IBC 2021, NEC 2020. CPS Energy commercial interconnection and $0.60/W rebate documentation. San Antonio's growing medical, military, and government sector creates a large commercial solar market. PE stamp where project size requires it.

CPS $0.60/W RebateIBC 2021PE Stamp

Commercial Solar Permit Design Services →

🔋

San Antonio Battery Permit Plans

Solar-paired and standalone battery permit drawings. NEC 2020 Article 706, CPS Energy storage interconnection. Battery is the highest-ROI add-on in San Antonio under two-tier net billing — it captures midday excess and dispatches evening peak, keeping more generation in the Tier 1 retail-rate window instead of spilling into 2–4¢/kWh exports.

NEC 2020 Art.706Tier 1 DispatchCPS Storage

Battery Storage Permit Design Services →

🚗

San Antonio EV Charger Permit Design

EV charger permit drawings for Bexar County residential and commercial. NEC 2020 Article 625, load calculations, panel upgrade integration. San Antonio's large military base population and growing tech sector create a strong EV market. Solar + battery + EV charging eliminates afternoon peak grid purchases entirely under CPS two-tier billing.

NEC 2020 Art.625Military / GovLoad Calcs

EV Charger Permit Design Services →

San Antonio Solar Market — 2026

Four Things Shaping Solar in San Antonio Right Now.

Tier 1

Full Retail Credit — the Number That Drives San Antonio Solar Economics

CPS credits solar up to monthly usage at full retail — ~$0.12/kWh. Battery that captures midday excess and dispatches evening peak keeps more kWh in this tier. Every proposal should start with annual kWh in Tier 1 — not system size.

$0.60/W

CPS Commercial Rebate — Active in 2026, Residential Depleted

CPS commercial rebate: $0.60/W for systems up to 25kW, max $80,000 or 50% of costs, active as of July 2026. Must use CPS Registered Contractors. Residential rebate depleted — direct residential customers to Texas state programs and Tier 1 billing optimization.

100%

Texas Property Tax Exemption — the Permanent Incentive No One Talks About Enough

Texas exempts 100% of solar added home value from property taxes — permanently. A system adding $15,000 to assessed value costs nothing in additional taxes. The sales tax exemption on equipment and labor rounds out Texas's state-level solar incentives after the federal 25D credit expired December 31, 2025.

TDLR

SB 1036 & SB 1697 — Solar Retailer Registration Required Since September 2025

Texas SB 1036 and SB 1697, effective September 2025, require solar retailers and salespeople to register with TDLR. All San Antonio solar sales require registration. Verify TDLR status for your company and salespeople before any customer engagement.

AHJ Solar Permit Design San Antonio

City of San Antonio Development Services and All Bexar County Jurisdictions — CPS Formatted Every Time.

We cover City of San Antonio, Bexar County, and surrounding cities. CPS Energy registered contractor status confirmed before we build interconnection documentation.

Jurisdiction	Utility	Portal	Key Notes	Review Time
City of San Antonio	CPS Energy	SA Development Services	CPS registered contractor required · Generator application + building permit · $275–525 fee	1–3 weeks
Bexar County (unincorp.)	CPS Energy	Bexar County	CPS territory extends into county · Confirm AHJ per address	1–3 weeks
Helotes / Leon Valley	CPS Energy	City portal	CPS service area · Residential growth market · Suburban rooftop solar	1–3 weeks
New Braunfels	NBU (muni)	City of NB	New Braunfels Utilities — separate from CPS · Confirm utility before building plan set	2–4 weeks
Schertz / Seguin	CPS / GVEC	City portal	Mixed territory — CPS and Guadalupe Valley Electric Co-op depending on address	2–4 weeks
Boerne / Kerrville	GBRA / CPL	City portal	Outside CPS territory — confirm utility per address · Hill Country area	2–4 weeks
Converse / Universal City	CPS Energy	City portal	Military adjacent · CPS territory · Growing residential solar market	1–2 weeks

Also covered: Selma, Live Oak, Kirby, Somerset, and all Bexar County cities. References: CPS Energy Solar Program · SA Development Services · DSIRE Texas

What You Get

Solar Permit Package San Antonio — San Antonio Solar Permit Plan Sets. CPS-Ready. Development Services Formatted.

Cover Sheet — San Antonio PV Permit Plans

NEC 2020 · IBC/IRC 2021 · CPS Energy utility · Net billing Tier 1/Tier 2 noted · Registered contractor documentation reference

Site Plan

Meter location · CPS interconnection access point · ASCE 7 South Texas wind values · No significant seismic risk

Roof Layout

Array diagram · Pitch, azimuth, setbacks · Texas flat/low-slope and composition roofs · IFC 2021 §1205 fire access paths

Single-Line Diagram

NEC 2020 §690.12 rapid shutdown · Battery (Article 706) where included · CPS Energy bidirectional meter · Net billing metering configuration

Structural Calculations

IBC/IRC 2021 · ASCE 7 South Texas wind loads · Gravity and lateral loads · PE stamp for commercial and larger projects

Rapid Shutdown + Labels

NEC 2020 §690.12 compliance · Battery shutdown interface (Article 706)

Equipment Datasheets + CPS Energy Generator Application Package

UL-listed module, inverter, racking, and battery datasheets · CPS Energy generator application · CPS registered contractor documentation · Commercial rebate supporting documentation where applicable · Texas property tax and sales tax exemption notes

San Antonio Plan Set — 24 Hours.

CPS Energy Formatted · NEC 2020 · Two-Tier Net Billing · Battery + EV · All Bexar County AHJs

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How It Works

Three Steps. 24 Hours. CPS-Ready.

📋

Submit the Project

Share address, specs, and system design. We confirm the AHJ, CPS registered contractor status, and NEC 2020 format for San Antonio Development Services.

5 minutes

⚡

We Build the Plan Set

NEC 2020, IBC/IRC 2021. Development Services permit formatted. CPS generator application and interconnection package. Battery (Article 706) where included. Commercial rebate documentation where applicable.

24–48 hours

✅

Submit and Get Approved

Submit Development Services permit and CPS generator application simultaneously. CPS interconnection: 4–6 weeks parallel track. Free revisions for any AHJ correction on our design.

Free revisions

🛡️

The Permit Design Commitment

Solar permit services in San Antonio — what every installer and EPC gets on every project.

✓CPS Energy registered contractor status confirmed before we build interconnection docs

✓Two-tier net billing documentation — Tier 1 sizing and battery dispatch strategy noted

✓24–48 hour delivery on standard residential solar projects

✓NEC 2020 formatted for SA Development Services — not California NEC 2026

✓Free revisions for any AHJ correction related to our design

Start Free Trial →

First plan set free.
Licensed installers & EPCs only.

FAQ

Questions San Antonio Installers Ask Us

CPS Energy uses a two-tier net billing structure. Solar generation up to the customer's monthly electricity consumption is credited at the full retail rate — approximately $0.12/kWh. Generation beyond monthly consumption is credited at the avoided cost rate, currently 2 to 4 cents per kilowatt-hour. The practical implication: size the system to match annual consumption (not exceed it), and pair it with battery storage to keep more generation in the retail-rate tier instead of spilling into low-value exports.

The CPS Energy residential solar rebate program has depleted its funding as of 2026 — new residential applications are not being accepted. The commercial solar rebate remains active at $0.60 per AC watt for systems up to 25kW (maximum $80,000 or 50% of costs). All installations must use a CPS Energy Registered Contractor to qualify. For residential customers, the financial conversation in 2026 shifts to Texas state incentives and two-tier billing optimization.

CPS Energy requires all solar installations to be performed by a company that has completed CPS Energy's Registered Contractor program. The registered contractor must submit the CPS generator application and be listed on the interconnection documentation. Installations by unregistered contractors cannot submit CPS interconnection applications — which blocks the system from receiving solar credits under net billing. Confirm registration status before committing to any San Antonio installation timeline.

Under CPS Energy's two-tier net billing, battery storage shifts the economics significantly. Midday solar production often exceeds consumption — that excess would otherwise be credited at 2 to 4 cents per kilowatt-hour. Battery captures that excess and dispatches it during evening peak, when the customer would otherwise pull from the grid at $0.12/kWh retail. The value gap between Tier 2 exports and Tier 1 self-consumption is 3 to 6 times per kilowatt-hour. Battery narrows that gap by maximizing the high-value window.

San Antonio uses NEC 2020 as the working electrical standard for solar permits in 2026. San Antonio Development Services enforces electrical codes with local amendments. NEC 2026 adoption will likely follow the state adoption timeline — verify the current code with Development Services for any project submitted after Q3 2026.

All of it — City of San Antonio, Bexar County, Helotes, Leon Valley, Converse, Universal City, Live Oak, and surrounding cities. Note that some outer areas use utilities other than CPS Energy — New Braunfels Utilities (NBU) and Guadalupe Valley Electric Cooperative (GVEC) serve some Bexar County adjacent areas. We confirm the utility and AHJ for every address before building.

Most San Antonio residential plan sets ship in 24 to 48 hours. Battery permit plans same day. Commercial projects with rebate documentation: 3 to 5 business days. Rush available on request.

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Reviewed by the Permit Design Engineering Team — Licensed PE CPS Energy net billing two-tier structure confirmed from CPS Energy solar program documentation. CPS registered contractor requirement confirmed. Commercial rebate $0.60/W (active 2026) confirmed; residential rebate depletion confirmed from CPS program status. NEC 2020 confirmed as San Antonio working standard. Texas SB 1036 and SB 1697 (eff. September 2025) TDLR registration requirement confirmed. Texas property tax and sales tax exemptions confirmed via Texas Comptroller. Last reviewed July 2026.

NEC 2020CPS Energy Net Billing Commercial Rebate $0.60/WTDLR SB 1036 San Antonio Solar Drafting ServicesSan Antonio Solar CAD Services July 2026

San Antonio Solar
Permit Design.
CPS Energy Net Billing.
Battery Saves the Good Tier.

CPS Energy Pays Full Retail Up to Your Monthly Usage. After That, the Rate Drops to 2–4¢/kWh. Battery Is the Tool That Keeps More Generation in the Good Tier.

Oversized Systems Hurt Customers. Depleted Residential Rebate Changes the Conversation. CPS Registration Is Non-Negotiable.

CPS Formatted. NEC 2020. Two-Tier Net Billing. All Bexar County AHJs.

Four Things Shaping Solar in San Antonio Right Now.

City of San Antonio Development Services and All Bexar County Jurisdictions — CPS Formatted Every Time.

Solar Permit Package San Antonio — San Antonio Solar Permit Plan Sets. CPS-Ready. Development Services Formatted.

San Antonio Plan Set — 24 Hours.

Three Steps. 24 Hours. CPS-Ready.

Questions San Antonio Installers Ask Us

San Antonio Plan Sets — 24 Hours.

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San Antonio SolarPermit Design.CPS Energy Net Billing.Battery Saves the Good Tier.

CPS Energy Pays Full Retail Up to Your Monthly Usage. After That, the Rate Drops to 2–4¢/kWh. Battery Is the Tool That Keeps More Generation in the Good Tier.

Oversized Systems Hurt Customers. Depleted Residential Rebate Changes the Conversation. CPS Registration Is Non-Negotiable.

CPS Formatted. NEC 2020. Two-Tier Net Billing. All Bexar County AHJs.

Four Things Shaping Solar in San Antonio Right Now.

City of San Antonio Development Services and All Bexar County Jurisdictions — CPS Formatted Every Time.

Solar Permit Package San Antonio — San Antonio Solar Permit Plan Sets. CPS-Ready. Development Services Formatted.

San Antonio Plan Set — 24 Hours.

Three Steps. 24 Hours. CPS-Ready.

Questions San Antonio Installers Ask Us

San Antonio Plan Sets — 24 Hours.

San Antonio Solar
Permit Design.
CPS Energy Net Billing.
Battery Saves the Good Tier.