Which utility serves this customer?
Each Texas utility has different net metering rules, rebate programs, and pitch angles. Selecting here loads the right calculator math and proposal template.
Oncor
Oncor Electric Delivery — Dallas-Fort Worth metro + East/West Texas (Midland, Odessa, Waco, Tyler) · 4M+ premises serving 13M+ Texans · TDU only (wires and delivery; REP supplies electricity)
TDU only — Oncor owns the wires and sets delivery charges; the customer's REP (Retail Electric Provider) sets the retail rate and the solar export credit. Oncor's "Take a Load Off" Solar PV + Energy Storage rebate (up to $9,000 combined per residential project) is a SOLAR-INSTALL rebate — it requires installing new solar. It does NOT apply to a battery-only retrofit (the proposal tool's default modeled customer). For a solar+battery sale (where Top Tier installs both), the rebate is real money on the table and lives in the rep guide. REP-dependent NEM: Tesla Electric (Fixed plan, Powerwall) and Octopus's Intelligent Octopus for Home (Enphase / SolarEdge / SolarEdge Nexis) are the representative solar-friendly plans we model today.
Lead with: REP buyback economics + ERCOT resilience (battery-retrofit default)
CenterPoint Energy
CenterPoint Energy — Greater Houston metro + 8-county electric footprint (Harris, Brazoria, Chambers, Fort Bend, Galveston, Liberty, Montgomery, Waller) · ~2.8M electric customers · TDU only (wires and delivery; REP supplies electricity)
TDU only — CenterPoint owns the wires and sets delivery charges; the customer's REP (Retail Electric Provider) sets the retail rate and the solar export credit. CenterPoint runs a smaller residential Solar PV rebate ($135/kW DC, capped at 15 kW = up to ~$3,000 per project; SOLAR-ONLY, no battery adder) on a $1.5M annual budget. REP-dependent NEM: Tesla Electric (Fixed plan, Powerwall) and Octopus's Intelligent Octopus for Home are the representative solar-friendly plans we model today. Hurricane Beryl (Jul 2024) — 2.26M customer outages at peak, full restoration July 19 (Day 11), worst-hit pockets up to 2 weeks — anchors the resilience pitch.
Lead with: Hurricane Beryl resilience + REP buyback economics + ERCOT structural hedge
Austin Energy
Austin Energy — City of Austin + parts of Travis and Williamson counties · ~553K residential customers · municipal utility (city-owned, owns wires + supplies electricity)
Single-layer muni — Austin Energy owns wires and supplies electricity; no REP layer. Runs a Value of Solar Tariff (VoS) instead of 1:1 net metering: every kWh of solar produced is credited at the 2026 VoS rate of 9.91¢/kWh, separate from the 4-tier inclining-block retail rate the customer pays for grid imports. Battery does not increase VoS revenue (VoS is paid on production, not export) — value is consumption avoidance against the inclining-block rate, resilience for Uri-class events, and 10-year workmanship coverage. Austin Energy's $2,500 Residential Solar PV Rebate is a SOLAR-INSTALL rebate (minimum 3 kW-dc system, one per address since May 2018) — it does NOT apply to a battery-only retrofit (the default modeled customer); the rep guide covers the solar+battery sale case where it applies.
Lead with: Consumption avoidance + Uri-class resilience (battery-retrofit default)
CPS Energy
CPS Energy — San Antonio + surrounding 7-county footprint (Bexar, Atascosa, Bandera, Comal, Guadalupe, Kendall, Medina) · ~907K electric customers · largest US combined gas+electric municipal utility (city-owned, owns wires + supplies electricity)
Single-layer muni — CPS Energy owns wires and supplies electricity; no REP layer. Runs 1:1 retail-rate net metering (solar exports credit at retail; surplus carries forward). The SmartSource residential Solar PV Rebate SUNSET December 16, 2022 — no residential capex rebate is available today; commercial / non-profit / school tiers remain active. CPS runs a Battery Storage demand-response program that pays a $10 bill credit per dispatch event (performance-based, not a rebate). Uri Feb 2021 securitization recovers via the Fuel Adjustment Factor ($0.00080/kWh as of March 2024); multi-year base-rate increases (2022 +3.85%, 2024 +4.25%) layer on top.
Lead with: 1:1 NEM + post-Uri rate-case hedge + battery DR enrollment
El Paso Electric
El Paso Electric — City of El Paso (all of El Paso County) + parts of Hudspeth and Culberson counties (Van Horn, Sierra Blanca) · ~310-320K TX residential customers · regulated IOU on the WECC grid (NOT ERCOT)
Regulated IOU — EPE owns wires AND supplies electricity; no REP layer. The structural outlier of the TX build: EPE is on the WECC grid, not ERCOT. Uri Feb 2021 was an ERCOT collapse — only ~3,000 EPE customers lost power for under 5 minutes (post-2011 winterization investment + the Montana Power Station). PUCT regulates the TX side (NMPRC the NM side); EPE files multi-year base-rate cases through PUCT. Residential NEM CHANGED July 1, 2025: pre-July-1-2025 systems grandfathered at 1:1 within month with surplus rolled forward; new systems are capped at 50 kW, export credit is at avoided-cost (~3-5¢/kWh) limited to 10% of past-year usage, $85 application fee, $30.25/mo minimum bill. EPE runs a $500 Home Battery Incentive (small bring-your-own-battery program); no broader residential PV rebate. PUCT Docket 57568 approved Feb 2026: $33M revenue increase, ROE 9.4%, average residential bill ~$98 → ~$111 (+$13/mo), effective May 2026.
Lead with: Post-July-2025 NEM cohort + Not-on-ERCOT resilience + Sun Belt heat hedge
AEP Texas
AEP Texas — Coastal Texas (Corpus Christi, Brownsville, Rio Grande Valley) + West Texas (Abilene, San Angelo, Vernon) · ~820-850K residential meters (~1M total premises) · TDU only (wires and delivery; REP supplies electricity)
TDU only — AEP Texas owns the wires across two distinct territories (Coastal RGV + West Texas) and sets delivery charges; the customer's REP (Retail Electric Provider) sets the retail rate and the solar export credit. AEP Texas SMART Source residential rebate is SOLAR-PV ONLY (NO battery component), capped at $3,000 per project on a tiered $/W structure (50¢/W for systems <3 kW, declining for larger systems). Residential battery retrofits do NOT qualify. REP-dependent NEM: Tesla Electric (Fixed plan, Powerwall) and Octopus's Intelligent Octopus for Home are the representative solar-friendly plans we model today. Dual resilience profile: coastal hurricane exposure (Hurricane Hanna 2020 took out ~152K RGV customers; Beryl 2024 largely spared AEP TX) plus West Texas extreme heat.
Lead with: RGV hurricane + West Texas heat resilience + REP buyback + ERCOT hedge
TNMP
TNMP (Texas-New Mexico Power) — scattered Texas service areas: Gulf Coast (Galveston Island, Texas City, La Marque, Dickinson, League City, Friendswood, Alvin, Angleton, Brazoria, West Columbia, Sweeny), North-Central Texas (Lewisville, Pilot Point, Princeton, Farmersville, Glen Rose, Hamilton, Gatesville, Clifton, Meridian, etc.), and West Texas (Kermit, Pecos, Fort Stockton, Sanderson) · ~220K residential customers (~260K total premises) · TDU only (wires and delivery; REP supplies electricity)
TDU only — TNMP owns the wires across a scattered Texas footprint and sets delivery charges; the customer's REP (Retail Electric Provider) sets the retail rate and the solar export credit. TNMP's COMPASS / Renewable Generation residential program (~$1,000 storage adder + up to ~$4,250/premise solar PV) appears to be a SOLAR-INSTALL program (the storage adder rides on top of a solar install, not a standalone-battery incentive) — VERIFY pending direct TNMP confirmation. Treated as not applicable to the battery-retrofit default modeled here; the projection does not credit it. REP-dependent NEM: Tesla Electric (Fixed plan, Powerwall) and Octopus's Intelligent Octopus for Home are the representative solar-friendly plans we model today. Galveston Island exposure makes coastal hurricane the primary resilience driver for that part of the footprint (Hurricane Ike 2008: 113K customers — 100% of TNMP Gulf Coast service area — without power; ~$30-35M restoration cost). Pending PUC Docket 58964 (filed Nov 2025) requests $2.8B rate base, materially larger than the prior $835M.
Lead with: Galveston hurricane resilience + REP buyback + ERCOT hedge (battery-retrofit default)