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🏜️ Utah⚡ No Net Metering — ECR ~5¢/kWh

Utah
Solar Permit Plans.
NEC 2023. Rocky Mountain Power
Pays ~5¢/kWh, Not Retail.

Utah has among the best solar resources in the country — and one of the most installer-critical export credit structures. Rocky Mountain Power ended traditional net metering in 2017. New customers earn the Export Credit Rate, approximately 5.6 cents per kilowatt-hour in summer and 4.7 cents off-peak, against a retail rate of about 10 cents. Self-consumed solar is worth twice what exported solar earns. Every Utah proposal should be built around that math.

NEC 2023 — effective July 1, 2025 2021 IBC + IRC + IECC Schedule 137 ECR — not NEM Rocky Mountain Power + UAMPS munis All 29 Counties
Order Utah Plan Set →See the ECR Structure ↓
NEC 2023Effective statewide July 1, 2025
ECR 5.6¢/kWhSummer export credit — RMP Schedule 137
ECR 4.7¢/kWhOff-peak export credit (Oct–May)
~10.2¢/kWhRetail rate — self-consumption 2× ECR
NEC 2023Statewide — eff. July 1, 2025
2021 IBC + IRCEff. July 1, 2023
ECR ~5¢/kWhNot retail NEM — Schedule 137
Wasatch SeismicASCE 7 seismic zone — significant
29 CountiesAll covered
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AHJ-ReadyBuilt to current AHJ requirements
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24–48 HrsTypical residential turnaround
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Free RevisionsFor AHJ-requested corrections
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150+ PartnersSolar installers, EPCs & roofers
Utah Solar Permits — 2026

Excellent Solar Resource. Unfavorable Export Economics. Know Both Before You Quote.

Permit Design builds Utah solar permit plan sets for solar installers, EPCs, and roofing companies across all 29 counties. Utah's statewide electrical code is now NEC 2023 — adopted through Utah Code Title 15A (H.B. 313, effective July 1, 2025), upgrading from the NEC 2020 that had been in force since July 1, 2023. Building codes are the 2021 IBC and 2021 IRC with Utah amendments, effective the same July 2023 date. The Wasatch Front's seismic zone is a structural consideration that differentiates Utah from most Western states — ASCE 7 seismic design category is significant along the Salt Lake City corridor.

The more significant installer variable is the utility export structure. Rocky Mountain Power, which serves more than 80% of Utah, ended traditional net metering in 2017 after a settlement with the Utah Public Service Commission. Customers who interconnect today are placed on Schedule 137, Net Billing Service, where exported solar earns the Export Credit Rate — roughly 5.6 cents per kWh in summer and 4.7 cents off-peak. The retail rate runs about 10.2 cents. That gap means every kilowatt-hour of self-consumed solar is worth approximately twice what an exported kilowatt-hour earns. Utah solar proposals that don't account for this will produce payback estimates that don't hold up.

Last updated: June 2026 · NEC 2023 adoption date, Schedule 137 ECR rates, and building code status confirmed as of June 2026.

Utah Export Credit Rate

Utah Ended Net Metering in 2017. Three Schedules. One Active.

Rocky Mountain Power runs three solar compensation schedules in Utah. Two are closed to new customers. Understanding which one a prospective customer is on — or which one they'll be placed on — changes the financial model completely.

CLOSED NOV 15, 2017
Schedule 135
Net Metering — 1:1 kWh Credit
Traditional 1:1 net metering at the full retail rate. Customers who interconnected before November 15, 2017 are grandfathered through January 1, 2036. No new enrollments. Systems on Schedule 135 that add capacity may lose grandfathered status depending on the scale of the addition.
CLOSED OCT 31, 2020
Schedule 136
Transition Program — 9.2¢/kWh Fixed
An intermediate transition schedule for customers who interconnected between November 15, 2017 and October 30, 2020, offering a fixed credit of 9.2 cents per kWh on total solar generation. No longer open. Existing Schedule 136 customers retain their terms for the duration of their enrollment.
CURRENT — ALL NEW CUSTOMERS
Schedule 137
Net Billing — ECR Updated Annually
Export Credit Rate: 5.636¢/kWh summer (June–September), 4.745¢/kWh off-peak (October–May). The ECR updates annually on March 1 based on Rocky Mountain Power's avoided-cost filing with the Utah Public Service Commission. Energy is netted instantaneously — there is no monthly carry-forward of bill credits. Excess credits go to the Energy Balancing Account shared across all RMP customers, not refunded to the individual customer.
The self-consumption imperative in Utah. At 5.6¢/kWh export versus 10.2¢/kWh retail, oversizing a Utah system to maximize annual production shortchanges the customer on payback. A system sized to match peak daily load, optionally paired with battery storage to shift afternoon generation into evening consumption, captures the full retail rate on more kilowatt-hours. Permit Design plan sets don't include proposal economics — but this is the fundamental math every Utah installer should build into every customer conversation.
Utah Code Structure

NEC 2023 + 2021 IBC + 2021 IRC — All With Utah Amendments

Utah's 2021 I-Code suite and NEC 2023 represent a reasonably current stack. The structural seismic design requirements along the Wasatch Front are the most Utah-specific engineering consideration for rooftop solar.

Electrical
NEC 2023 (Utah Code Title 15A)
✓ H.B. 313 — effective July 1, 2025
✓ §690.12: single RSD device
✓ UL 3741 PVHCS path recognized
✓ §690.12(D) label format
Residential Structural
2021 IRC with Utah Amendments
✓ Effective statewide July 1, 2023
✓ Utah amendment: no mandatory sprinklers
✓ ASCE 7 wind + seismic per county
✓ Wasatch Front: significant seismic zone
Commercial Structural
2021 IBC with Utah Amendments
✓ Effective statewide July 1, 2023
✓ IBC Chapter 16 seismic provisions
✓ Commercial + multi-family
✓ 2021 IECC energy code applies
Utah's Wasatch Fault changes the structural engineering conversation. The Salt Lake City metro sits directly on the Wasatch Fault — one of the most seismically hazardous zones in the western United States outside California. ASCE 7 seismic design categories for Utah's Wasatch Front counties (Salt Lake, Utah, Davis, Weber, Cache) require specific analysis for rooftop solar attachment loads beyond what wind uplift alone demands. Southern Utah counties — Washington County (St. George), Kane, and Garfield — carry different seismic exposures. Every Utah plan set applies county-specific ASCE 7 seismic and wind values rather than a single statewide assumption.
Rocky Mountain Power & Utah Utilities

One Dominant Utility, One Export Credit Rate, Some Municipal Alternatives

Rocky Mountain Power (a PacifiCorp subsidiary) serves more than 80% of Utah's electricity customers. Its Schedule 137 Net Billing Service governs the economics for the vast majority of Utah solar installations. Municipal utilities offer an alternative in some cities.

Rocky Mountain Power — 80%+ of Utah
Schedule 137: Export Credit Rate
New customers since October 31, 2020 receive the Export Credit Rate on Schedule 137. The ECR updates annually on March 1 based on Rocky Mountain Power's avoided-cost calculation filed with the Utah PSC. Current rates: 5.636¢/kWh June–September; 4.745¢/kWh October–May. Energy is netted instantaneously with no monthly credit carry-forward. Rocky Mountain Power serves the entire Wasatch Front, southern Utah including St. George, and most of the state's population centers.
UAMPS Municipal Utilities
Independent Programs — Better Terms Possible
Several Utah municipalities operate their own electric utilities outside the Rocky Mountain Power service territory. Members of the Utah Association of Municipal Power Systems (UAMPS) include communities such as the City of St. George Power Department, Murray City Power, and others that set their own solar interconnection and compensation policies. Some UAMPS members offer more favorable net metering terms than Schedule 137. Confirming whether a project address falls in RMP or a UAMPS muni territory is an important first step for any Utah solar proposal.
Schedule 137 interconnection tiers for Utah solar. Rocky Mountain Power uses a tiered process: Tier 1 expedited review for residential systems 25 kW and below, Tier 2 standard review with engineering analysis for 25 kW to 2 MW, and Tier 3 for larger systems. All tiers reference DSIRE Utah for current incentive stacking. NEC 2023 is the current statewide electrical standard for permit documentation; Rocky Mountain Power's own interconnection technical requirements may still reflect an earlier NEC cycle in their filed specifications — confirm with RMP's interconnection team for commercial projects above 25 kW.
What's Included

Utah Solar Permit Plan Set Contents

Every Utah plan set references NEC 2023 under Utah Code Title 15A, the 2021 IRC or IBC with Utah amendments, county-specific ASCE 7 seismic and wind loads, and Schedule 137 interconnection documentation for Rocky Mountain Power — or the confirmed UAMPS utility.

Sheet 01
Cover Sheet
NEC 2023 citation under Utah Code Title 15A with H.B. 313 effective date. 2021 IRC (residential) or 2021 IBC (commercial/multi-family) structural reference with Utah amendments noted. Utility confirmed: Rocky Mountain Power Schedule 137 or UAMPS municipal utility. AHJ identified for the project county. Utah-licensed electrical contractor credential reference.
Sheet 02
Site Plan
Dimensioned property plan showing lot boundaries, Rocky Mountain Power or UAMPS service point, emergency access pathways, and wiring route from array to inverter to panel. County noted for ASCE 7 seismic design category and wind exposure — Wasatch Front counties carry significantly different seismic design parameters than southern Utah's Washington and Kane counties.
Sheet 03
Roof Layout
Module placement diagram across roof planes with orientation, pitch, and lag-point spacing referenced to 2021 IRC structural provisions. Seismic design category applied per ASCE 7 for the project county — Wasatch Front installations in Salt Lake, Utah, Davis, Weber, and Cache counties require explicit seismic attachment analysis beyond what wind uplift alone covers. Fire setbacks documented per AHJ requirements.
Sheet 04
Single-Line Diagram
NEC 2023 Article 690 wiring diagram — single rapid shutdown initiation device per §690.12, §690.12(D) labeling format, UL 3741 PVHCS alternate path documented where applicable. Schedule 137 bidirectional meter connection shown per Rocky Mountain Power's net billing technical requirements, or the confirmed UAMPS utility's interconnection standard.
Sheet 05
Structural Calculations
Utah-licensed PE stamp covering structural adequacy of the roof or racking system. 2021 IRC for residential; 2021 IBC Chapter 16 for commercial and multi-family. ASCE 7 wind and seismic values applied per county — Wasatch Front counties receive seismic design category analysis calibrated to the Wasatch Fault zone, not generalized for the state.
Sheet 06
Rapid Shutdown
NEC 2023 §690.12 rapid shutdown documentation — one-foot array boundary, single initiation device, §690.12(D) label format. UL 3741 PVHCS compliance path documented if applicable. NEC 2023 represents a significant change from the NEC 2020 that governed Utah from July 2023 to July 2025 — plan sets referencing 2020 rapid shutdown formatting are outdated for permits submitted after July 1, 2025.
Sheet 07
Equipment Datasheets
Manufacturer cut sheets for the specified modules, inverter, racking hardware, and MLPE — all UL-listed, organized to meet Rocky Mountain Power's Schedule 137 interconnection technical review format or the confirmed UAMPS utility's submission standard. Tier classification noted (Tier 1 ≤25 kW, Tier 2 25 kW–2 MW) per RMP's interconnection process. Commercial projects above 25 kW flagged for Tier 2 engineering review requirements.
🏗️ Commercial Solar in Utah

Also doing commercial rooftop, parking canopy, or ground-mount in Utah?

Utah commercial solar structural packages reference the 2021 IBC with Utah amendments, NEC 2023 Article 690 electrical, and Rocky Mountain Power Schedule 137 Tier 2 interconnection documentation for systems between 25 kW and 2 MW. Wasatch Front commercial projects include explicit ASCE 7 seismic design category analysis under IBC Chapter 16. Engineering covers standing-seam and ballasted membrane rooftops, parking canopy structures, and fixed-tilt or tracker ground-mount systems. Custom scope and turnaround quoted per project.

NEC 2023 (Title 15A) 2021 IBC Utah Seismic Design RMP Tier 2 / Tier 3
Commercial Quote →
Scope + turnaround quoted per project
Process

How Utah Solar Permit Plan Sets Work

01

Submit Your Utah Project

Give us the county and address. We confirm whether Rocky Mountain Power (Schedule 137 ECR) or a UAMPS municipal utility serves the address, identify the local AHJ, and flag the ASCE 7 seismic design category — Wasatch Front counties carry seismic demands that differ materially from the rest of Utah.

02

Built to NEC 2023 + RMP Requirements

NEC 2023 Article 690 — single-device rapid shutdown per §690.12, §690.12(D) labeling, UL 3741 PVHCS path available. 2021 IRC or IBC structural with county-specific ASCE 7 seismic and wind loads. Utah-licensed PE stamp. Schedule 137 Net Billing interconnection documentation for Rocky Mountain Power.

03

Delivered in 24–48 Hours

The full Utah 7-sheet package delivers in 24–48 hours. Every sheet is NEC 2023 current and utility-specific — Schedule 137 ECR documentation for Rocky Mountain Power, not a recycled NEM template. Free revisions until the Utah AHJ signs off.

First-Time Utah Clients

Try Us on Your First Utah Project. Free.

New to Permit Design? Submit your first Utah residential project and we'll build the full 7-sheet package at no charge — NEC 2023 electrical, 2021 IRC structural with county seismic and wind loads, single-device rapid shutdown per §690.12, and Schedule 137 interconnection documentation for Rocky Mountain Power.

⚠️ ⚠️ Licensed solar installers, EPCs, and roofing companies only — individual homeowners and residential end customers do not qualify. Capped at one free residential plan set per company.

Claim Your Free UT Plan Set →
✓ NEC 2023 — Utah Code Title 15A
✓ 2021 IRC structural + PE stamp
✓ ASCE 7 seismic per county
✓ Schedule 137 ECR documentation
✓ Free revisions until AHJ approval
FAQ

Utah Solar Permit Design — Frequently Asked Questions

NEC 2023. Utah adopted the 2023 National Electrical Code through H.B. 313, amending Utah Code Title 15A, effective July 1, 2025. Before that date, NEC 2020 governed Utah solar permits from July 1, 2023. NEC 2023 introduced single-device rapid shutdown per §690.12, the UL 3741 PVHCS alternate compliance path, and updated §690.12(D) labeling. Any Utah solar permit submitted after July 1, 2025 should reference NEC 2023.
No, not for new Rocky Mountain Power customers. Utah ended traditional net metering in 2017. New customers since October 31, 2020 are on Schedule 137, Net Billing Service, which pays the Export Credit Rate — approximately 5.636¢/kWh in summer and 4.745¢/kWh off-peak, compared to the retail rate of about 10.2¢/kWh. Customers who interconnected before November 15, 2017 are grandfathered on Schedule 135 through January 1, 2036. Some UAMPS municipal utilities offer better solar compensation terms.
Rocky Mountain Power's current Export Credit Rate under Schedule 137 is 5.636¢/kWh for energy exported June through September and 4.745¢/kWh for October through May. The rate updates annually on March 1 based on RMP's avoided-cost calculation filed with the Utah PSC. Against a retail rate of about 10.2¢/kWh, a kilowatt-hour of self-consumed solar is worth roughly twice what an exported kilowatt-hour earns. System sizing for Utah should prioritize load-matching over annual production totals.
Rocky Mountain Power, a subsidiary of PacifiCorp, serves more than 80% of Utah including the Wasatch Front, St. George, and most population centers. Other customers are served by UAMPS municipal utilities including the City of St. George Power Department and Murray City Power, which set their own solar interconnection and compensation policies independently of Rocky Mountain Power.
The 2021 IRC with Utah amendments governs one- and two-family residential dwellings, effective July 1, 2023. A notable Utah amendment removes the mandatory residential fire sprinkler requirement from the 2021 IRC that would otherwise apply to new single-family construction. Commercial and multi-family structures use the 2021 IBC with Utah amendments. Structural calculations reference ASCE 7 seismic and wind values per county — the Wasatch Front's proximity to the Wasatch Fault means seismic design category analysis is material for most Salt Lake metro installations.
Significantly. Every kilowatt-hour exported to Rocky Mountain Power at 5.6¢ instead of consumed at home at 10.2¢ represents roughly a 45% reduction in the value of that energy. Oversizing a Utah system to maximize annual production creates a situation where a larger fraction of the system's output earns the lower ECR. Proper Utah sizing models daytime household load, identifies the point of diminishing return, and uses battery storage to shift afternoon production into evening consumption where it offsets retail-rate grid power.
Schedule 135 (Net Metering): closed November 15, 2017; grandfathered customers retain 1:1 kWh credit through January 1, 2036. Schedule 136 (Transition Program): closed October 31, 2020; enrolled customers receive a fixed 9.2¢/kWh on total generation. Schedule 137 (Net Billing Service): applies to all new customers since November 2020; pays the Export Credit Rate updated annually on March 1.
Utah offers a sales tax exemption on solar energy systems and a property tax exemption preventing a solar installation from increasing a home's assessed value. No Utah state income tax credit for solar exists. The federal Section 25D residential clean energy tax credit expired for Utah systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act signed July 2025. Some UAMPS municipal utilities offer modest installation rebates or favorable interconnection terms not available from Rocky Mountain Power.
Yes. Utah consistently ranks among the top US states for solar resource quality. Salt Lake City averages approximately 5.3 peak sun hours per day; St. George in Washington County averages 6.1 peak sun hours — among the highest in the contiguous United States. The combination of exceptional solar resource with a 2:1 self-consumption advantage over the export rate makes well-sized Utah solar systems strong performers, even without traditional net metering.
Permit Design delivers Utah solar permit plan sets within 24-48 hours. Every plan set references NEC 2023 under Utah Code Title 15A, the 2021 IRC or IBC with Utah amendments, ASCE 7 seismic design category and wind values specific to the project county, and Schedule 137 Net Billing interconnection documentation for Rocky Mountain Power or the confirmed UAMPS utility. Free revisions until the Utah AHJ approves.
Utah Solar Market — 2026

Utah Solar by the Numbers

6.1 hrs/day
Peak Sun — St. George
Washington County in southern Utah averages 6.1 peak sun hours per day — among the highest values in the contiguous United States. Salt Lake City averages 5.3 peak sun hours. Utah's exceptional solar resource means even modestly sized systems produce meaningful generation, reinforcing the case for load-matched sizing over maximum production.
Top 10
National Solar Resource Ranking
Utah ranks in the top 10 states nationally for solar irradiance and is a fast-growing solar market driven by the Wasatch Front's population growth, increasing electricity rates, and commercial and industrial demand from tech, data center, and manufacturing sectors expanding in the corridor between Salt Lake City and Provo.
~10.2¢
Rocky Mountain Power Retail Rate
Rocky Mountain Power's average residential retail rate sits at approximately 10.2 cents per kWh — below the national average but rising with each rate case. The self-consumption value gap over the 5.6¢/kWh ECR makes rate increases more valuable to solar customers who are well-sized for self-consumption than to those exporting significant generation.
NEC 2023
Effective July 1, 2025
Utah's upgrade from NEC 2020 to NEC 2023 (July 2025) is the most significant code change for Utah solar permitting in years. Single-device rapid shutdown replaces the multi-device 2020 format. UL 3741 PVHCS is now a recognized alternate compliance path. Any Utah plan set using NEC 2020 rapid shutdown formatting after July 2025 is outdated.
Sales Tax Exempt
+ Property Tax Exemption
Utah exempts qualifying solar equipment from sales tax at the point of purchase and prevents a solar installation from raising a property's assessed value for tax purposes. No separate application is required for either benefit. No state income tax credit for solar currently exists in Utah.
29 Counties
Seismic Zone Varies Widely
Utah's 29 counties span dramatically different seismic design categories — from the high-hazard Wasatch Front corridor to the relatively lower-risk Colorado Plateau counties in southeastern Utah. Every Permit Design structural calculation uses ASCE 7 tables specific to the project county rather than a statewide default, which is especially important for rooftop attachment in Salt Lake, Utah, Davis, Weber, and Cache counties.
Utah AHJ Rejections

Top 3 Reasons Utah Solar Permits Get Rejected

Three rejection patterns account for the bulk of Utah plan set corrections since July 2025, largely driven by the NEC transition and seismic documentation requirements.

01
NEC 2020 Rapid Shutdown Format After July 1, 2025
Utah moved to NEC 2023 on July 1, 2025. Plan sets referencing NEC 2020's multi-device rapid shutdown format, §690.12 without the single-device requirement, or pre-§690.12(D) label layouts are outdated for any permit submitted after that date. This is the single most common Utah correction since mid-2025 as installers cycle through existing plan set templates.
NEC 2023 §690.12 · Utah Code Title 15A H.B. 313
How we prevent it: All Utah plan sets reference NEC 2023 under Utah Code Title 15A with the H.B. 313 July 1, 2025 effective date. NEC 2020 formatting is not used for any Utah permit submitted after July 1, 2025.
02
Seismic Design Category Missing for Wasatch Front Projects
Rooftop solar structural calculations for Salt Lake, Utah, Davis, Weber, or Cache county projects that omit explicit seismic design category analysis under ASCE 7 are routinely flagged. Wind uplift alone is insufficient for AHJs in the Wasatch Fault zone, where seismic attachment forces can govern the structural design more than wind does.
ASCE 7 · 2021 IRC Chapter 3 · Wasatch Fault SDC
How we prevent it: ASCE 7 seismic design category is determined for the specific project county and applied to the structural calculations for every Wasatch Front project — never omitted or treated as a secondary check.
03
Wrong Interconnection Format — Schedule 135/136 Template Used
Interconnection documentation formatted for the grandfathered Schedule 135 net metering program or the closed Schedule 136 Transition Program doesn't match what Rocky Mountain Power expects for new Schedule 137 Net Billing Service applications. This also affects proposal economics — a customer expecting 1:1 net metering credit on a Schedule 137 system will have inaccurate payback projections.
RMP Schedule 137 · Utah PSC ECR filing
How we prevent it: Utah interconnection packages reference Schedule 137 Net Billing Service for all new Rocky Mountain Power customers, or the confirmed UAMPS utility program where applicable.
More on plan set requirements → Utah Permit Design Services →
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The Permit Design Commitment

What every solar installer, EPC, and roofing company can expect on every project.

✅ 24–48 Hour Turnaround on Standard Residential Solar Projects
✅ No-Cost Revisions for AHJ Corrections Related to Our Design
✅ Code-Compliant Plans Built to Current NEC, Utility & Local Requirements
✅ Support Through Permit Approval — We Don't Disappear After Delivery
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Reviewed & Verified By PE-stamped plan sets across all 50 US states · NEC 2023 Utah adoption confirmed via Utah Code Title 15A · Schedule 137 ECR rates verified against Rocky Mountain Power's March 2024 PSC filing
AHJ-ReadyNEC 2023 confirmed
150+Installer partners
50US states covered
SeismicWasatch Front SDC
Permit SupportThrough AHJ approval
Last reviewed: June 2026·About Permit Design →
NEC 20232021 IBC + IRCSchedule 137 ECRWasatch Seismic
Neighbouring States

Solar Permit Plan Sets — Rocky Mountain & Southwest States

🎰NevadaNEC 2020 🏔️ColoradoNEC 2020 🥔IdahoNEC 2020 🌵ArizonaNEC 2023 🌶️New MexicoNEC 2020

Utah Solar Permits —
NEC 2023. Schedule 137. Seismic-Rated.

NEC 2023 · 2021 IBC + IRC · Rocky Mountain Power Schedule 137
Wasatch ASCE 7 Seismic · 29 Counties · 24–48 Hours

Order Utah Plan Set →Contact Us
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