Maricopa County · NEC 2020 · APS or SRP · Utility Confirmed Per Address
Phoenix Solar
Permit Design.
APS or SRP?
Two Utilities. Two Completely Different Programs.
Phoenix solar permit drawings for City of Phoenix and all Maricopa County AHJs. Two utilities with entirely different solar programs: APS (RCP 6.17¢/kWh, 10-year lock) and SRP (on-peak demand charges that make battery essential). Utility confirmed per address before we build. Free for first-time clients.
APS or SRP Confirmed per address
·NEC 2020 Maricopa County standard
·AZ Tax Credit 25% state credit up to $1,000
·Free AHJ revisions
APS 6.17¢RCP export · 10-yr lock · Post-Sept 2025 interconnection
SRP Demand$5–10/kW on-peak · Battery nearly essential
300 DaysSunny days/yr · 5.5–6.0 peak sun hours
24–48 hrStandard plan set delivery
2026 CodesElectrical: NEC 2020 (Arizona)Structural: IBC/IRC 2018 (AZ amendments)APS territory: West Phoenix, Scottsdale, Tempe, Glendale, PeoriaSRP territory: Mesa, Gilbert, Chandler, Queen Creek, AhwatukeeLast verified July 2026
Phoenix Has Two Solar Utilities With Completely Different Programs
APS Exports at 6.17¢/kWh Locked for 10 Years. SRP Has On-Peak Demand Charges That Change the Solar Math Entirely. Utility Must Be Confirmed Before You Design the System.
West Phoenix, Scottsdale, and Tempe are generally APS territory. The East Valley — Mesa, Gilbert, Chandler, Queen Creek — is mostly SRP. Boundaries don’t follow city lines. APS customers benefit from locking the RCP rate before the September annual reset. SRP customers need battery to manage the on-peak demand charge — solar alone often leaves them with higher bills after installation. We confirm per address before any work begins.
APS — RCP Export at ~6.17¢/kWh, Locked 10 Years From Interconnection
✅APS Resource Comparison Proxy: ~6.17¢/kWh for post-Sept 2025 interconnections
✅Rate locked 10 years from interconnection date — then renegotiated at current rate
⚠️Rate declines ~10% each September through 2032 — earlier interconnection locks higher rate
⚠️Retail rate ~15¢/kWh — self-consumption is 2.5× more valuable than exporting
✅Battery adds self-consumption value and resilience but solar works standalone on APS
SRP — On-Peak Demand Charges Make Battery Essential
⚠️SRP E-13: 3.45¢/kWh export credit — far below retail rate
⚠️Demand charge: $5–10/kW based on highest 15-min draw during 3–10 PM weekdays
⚠️Demand charge adds $30–$100/month regardless of how much solar is produced
✅Battery holds on-peak demand under 2–3 kW — dramatically reduces monthly charge
✅Battery is the financial centerpiece of SRP solar — not an optional accessory
⚠️ Confirm APS vs SRP before designing the system. An SRP customer without battery often sees higher bills after solar installation despite generating more electricity than they use. We confirm utility territory per address before building every Phoenix plan set.
Why Phoenix Installers Outsource
Wrong Utility Format. SRP Demand Charges Missed. APS Rate Lock Timing Not Communicated.
APS and SRP Interconnection Applications Are Separate and Incompatible
APS and SRP have different interconnection processes, one-line diagram requirements, and metering documentation. An APS application submitted for an SRP address is rejected immediately — the utilities have completely separate service territories. Utility confirmation is the mandatory first step before any plan set work begins for every Phoenix project.
SRP Customers Without Battery Often Pay More After Solar Than Before
SRP’s on-peak demand charge is based on the single highest 15-minute consumption during 3–10 PM weekdays. Solar at noon does not reduce an evening demand event. A Phoenix solar proposal for an SRP customer that doesn’t address the demand charge with battery is financially incomplete. Battery sized to flatten on-peak demand is what changes the SRP solar economics.
APS Rate Lock Timing Matters — Interconnecting Before September Locks a Higher 10-Year Rate
The APS RCP export rate declines approximately 10% each September. A system interconnected in August locks the current rate for 10 years; one interconnected in October locks a rate 10% lower. Installers who communicate this timing create a concrete, calendar-specific urgency for APS customers. We include the current APS RCP rate and next September reset date in every APS deliverable.
Phoenix Solar Permit Services
APS / SRP Interconnection. NEC 2020. All Phoenix AHJs.
Phoenix Residential Solar Permit Design
NEC 2020, IBC/IRC 2018. Utility confirmed per address — APS or SRP. APS interconnection with RCP rate documentation and September reset date. SRP interconnection with demand charge analysis note and battery sizing guidance. Battery (NEC 2020 Article 706) where included.
Residential Solar Permit Design Services →Phoenix Commercial Solar Permit Design
Commercial rooftop and carport drawings for Maricopa County. NEC 2020, IBC 2018. APS or SRP commercial interconnection. Phoenix’s corporate and industrial growth drives strong commercial rooftop demand. PE stamp. Desert ASCE 7 wind and thermal calcs for Maricopa County conditions.
Commercial Solar Permit Design Services →Phoenix Battery Permit Plans
Solar-paired and standalone battery permit drawings. NEC 2020 Article 706. For SRP customers, battery is the economic centerpiece — demand charge management and on-peak demand window analysis included. For APS customers, battery maximizes self-consumption and adds grid resilience during Phoenix’s extreme summer heat events and monsoon outages.
Battery Storage Permit Design Services →Phoenix EV Charger Permit Design
EV charger permit drawings for Maricopa County. NEC 2020 Article 625, load calculations, panel upgrade integration. For SRP customers, EV charge timing relative to the 3–10 PM on-peak window matters for demand charge management. Managed charging guidance note included in SRP EV deliverables.
EV Charger Permit Design Services →Phoenix Solar Market — 2026
Four Things That Define Solar in Phoenix.
300 Days
Best Solar Resource in the US — 300+ Sunny Days and 5.5–6.0 Peak Sun Hours
Phoenix averages more than 300 sunny days per year with 5.5 to 6.0 peak sun hours daily — among the highest in the continental US. A Phoenix system produces 30 to 40% more electricity annually than the same system in most Midwest or Northeast markets. The exceptional irradiance and rapidly rising APS and SRP rates make Phoenix one of the strongest long-term solar ROI markets in the country regardless of which utility serves the address.
APS RCP
Rate Lock — Interconnecting Before September Locks a Higher 10-Year Export Rate
The APS Resource Comparison Proxy declines approximately 10% each September under Arizona Corporation Commission authorization. Interconnect in August and the current rate is locked for 10 years. Interconnect in October and the locked rate is 10% lower. Current rate: approximately 6.17 cents per kWh as of August 2026. The September reset is a concrete, calendar-specific urgency argument for APS customers on the fence about solar timing.
SRP Demand
SRP Demand Charges Change the Entire Solar Math — Battery Is the Real Deliverable
SRP’s on-peak demand charge is based on the highest 15-minute consumption between 3 and 10 PM on weekdays. Solar at noon does not reduce an evening demand spike from air conditioning. Battery that holds peak demand below 2 to 3 kW is what makes SRP solar financially beneficial. Panel count matters less than battery size for SRP customers. This is the single most important design decision for every SRP solar installation in Phoenix.
AZ Credit
Arizona 25% State Tax Credit — No Federal 25D Residential Credit in 2026
Arizona offers a 25% state income tax credit for residential solar, capped at $1,000. Arizona also exempts solar equipment from state sales tax. The federal residential 25D credit expired December 31, 2025 and is not available for new homeowner installations in 2026. The Arizona credit and sales tax exemption provide partial offset, most meaningful for smaller system sizes where the $1,000 cap covers a larger percentage of the credit.
AHJ Solar Permit Design Phoenix
Phoenix and All Surrounding Jurisdictions — APS / SRP Interconnection Formatted.
We cover City of Phoenix and all Maricopa County jurisdictions. Utility confirmed per address before we build.
| Jurisdiction | Utility | Permit Type | Key Notes | Review Time |
|---|---|---|---|---|
| City of Phoenix | APS or SRP | Bldg + Elec | Phoenix Building and Safety · Online portal · $350–700 fee · 3–5 wk | 3–5 weeks |
| Scottsdale | APS | Bldg + Elec | City of Scottsdale Building · APS territory · Own department | 2–4 weeks |
| Mesa | SRP (mostly) | Bldg + Elec | City of Mesa Building · SRP territory · Demand charge applies | 2–4 weeks |
| Gilbert / Chandler | SRP | Bldg + Elec | Separate building depts · SRP territory · Battery essential | 2–3 weeks |
| Tempe / Glendale | APS | Bldg + Elec | APS territory · Own city building departments | 2–4 weeks |
| Peoria / Surprise | APS | Bldg + Elec | APS West Valley · Growing residential solar market | 2–4 weeks |
| Maricopa County (unincorp.) | APS or SRP | County Bldg + Elec | Maricopa County Dev Services · Confirm utility per address | 3–5 weeks |
References: Phoenix Building and Safety · APS Solar Plans · SRP Solar Price Plans
What You Get
Solar Permit Package Phoenix — Phoenix Solar Permit Plan Sets. APS / SRP Ready.
01
Cover Sheet — Phoenix PV Permit Plans
NEC 2020 · IBC/IRC 2018 (AZ) · Phoenix AHJ · APS / SRP utility
02
Site Plan
Meter and APS / SRP interconnection access · ASCE 7 local wind values · Applicable wind zone
03
Roof Layout
Phoenix rooftop conditions · Array diagram · Pitch, azimuth, setbacks · IFC fire access paths
04
Single-Line Diagram
NEC 2020 §690.12 rapid shutdown · Battery (Article 706) where included · APS / SRP bidirectional meter
05
Structural Calculations
IBC/IRC 2018 (AZ) · ASCE 7 local wind loads · Gravity and lateral loads · PE stamp for commercial
06
Rapid Shutdown + Labels
NEC 2020 §690.12 · Battery shutdown interface (Article 706)
07
Equipment Datasheets + APS / SRP Interconnection Package
UL-listed module, inverter, racking, and battery datasheets · APS / SRP interconnection application · State solar incentive notes
Phoenix Plan Set — 24 Hours.
APS / SRP Interconnection · NEC 2020 · All Phoenix AHJs
How It Works
Three Steps. 24 Hours. Phoenix AHJ Ready.
📋
Submit the Project
Share address, specs, and design. We confirm the AHJ, APS / SRP interconnection, and NEC 2020 format.
5 minutes⚡
We Build the Plan Set
NEC 2020, IBC/IRC 2018 (AZ). Phoenix AHJ formatted. APS / SRP interconnection package. Battery where included.
24–48 hours✅
Submit Permit + Interconnection
Submit permit and APS or SRP interconnection simultaneously. Interconnection: 4 to 8 weeks. Free revisions for any AHJ or utility correction.
Free revisions🛡️
The Permit Design Commitment
Solar permit services in Phoenix — what every installer and EPC gets.
✓AHJ confirmed per address before we build
✓APS / SRP interconnection package included
✓24–48 hour delivery on standard residential projects
✓NEC 2020 formatted for AZ — not California NEC 2026
✓Free revisions for any AHJ correction on our design
Start Free Trial →
First plan set free.
Licensed installers & EPCs only.
Licensed installers & EPCs only.
FAQ
Questions Phoenix Installers Ask Us
APS credits solar exports at the Resource Comparison Proxy (RCP) rate — approximately 6.17 cents per kWh for systems interconnecting after September 2025, locked for 10 years. SRP uses demand-based billing: a monthly charge of $5 to $10 per kW based on the highest 15-minute draw during 3 to 10 PM weekdays, plus a 3.45 cent export credit. Battery is nearly essential for SRP customers to control demand charges. Solar alone does not reduce an SRP on-peak demand charge.
General guide: West Phoenix, Scottsdale, Tempe, Glendale, Peoria, and Surprise are generally APS. East Valley — Mesa, Gilbert, Chandler, Queen Creek, Ahwatukee — is mostly SRP. Boundaries don’t follow city lines perfectly. We confirm utility per address before building.
City of Phoenix requires both a building permit and electrical permit. Submit APS or SRP interconnection simultaneously. Typical plan check: 3 to 5 weeks.
Phoenix and Maricopa County use NEC 2020.
Arizona 25% state income tax credit capped at $1,000. Arizona sales tax exemption on solar equipment. Federal 25D expired December 31, 2025.
For SRP customers: functionally yes — without battery to manage on-peak demand, solar often does not reduce the demand charge driving SRP bills. For APS customers: not required, but battery adds self-consumption value and grid resilience during heat events.
Most Phoenix residential plan sets ship in 24 to 48 hours. Battery same day. Commercial: 3 to 5 business days. Rush available.
⚡
Reviewed by the Permit Design Engineering Team — Licensed PE
APS RCP rate (~6.17¢/kWh post-Sept 2025, 10-yr lock, ~10%/yr decline) confirmed from APS rate schedules and ACC Decision. SRP demand charge structure ($5–10/kW on-peak) confirmed from SRP rate documentation. NEC 2020 Arizona adoption confirmed. Arizona 25% state tax credit (max $1,000) confirmed via AZ Dept of Revenue. Last reviewed July 2026.