Unisource Energy Corporation
UNS Energy Corporation is a Tucson, Arizona-based regulated utility holding company, wholly owned by Fortis Inc., operating Tucson Electric Power (458,000+ electric customers in Tucson) and UniSource Energy Services (~278,000 gas and electric customers across northern and southern Arizona).
- Company typePrivate
- Founded1902
- HeadquartersTucson, United States
- Headcount1,001–5,000
- GTM typeB2C
- OfferingServices
What Unisource Energy Corporation does
UNS Energy Corporation is the Tucson, Arizona-based holding company for two regulated utility subsidiaries: Tucson Electric Power (TEP) and UniSource Energy Services (UES). TEP provides electricity generation, transmission, and distribution services to more than 458,000 customers in the Tucson metropolitan area, while UES delivers natural gas and electric service to approximately 278,000 customers across northern and southern Arizona. The company is a wholly-owned subsidiary of Fortis Inc., the largest investor-owned electric and gas distribution utility in Canada, which serves more than 3 million customers across Canada, the United States, and the Caribbean.
The business model is a classic regulated utility model: revenue is generated through volumetric and fixed charges approved by the Arizona Corporation Commission (and FERC for certain transmission matters), under state-granted exclusive franchises. There are two operating segments — electric distribution (TEP) and combined gas and electric distribution (UES) — plus corporate functions at the UNS Energy parent level. Capital expenditure is high and ongoing, focused on generation assets, transmission and distribution infrastructure, renewable energy programs, and energy efficiency initiatives. The company serves primarily residential customers with a secondary commercial and industrial customer base; no large anchor enterprise accounts are disclosed, and the customer base is highly fragmented across Arizona service territories.
Technically, UNS Energy operates a conventional regulated utility stack: owned generation portfolio, transmission network, and last-mile distribution infrastructure. The source data does not disclose the generation fuel mix or specific technology architecture, and core technology is listed as "Not specified." Recent operational signals in 2025 include a new CIO mandate centered on IT service delivery, cloud strategy, and application modernization, and a new VP of Energy Management overseeing renewable development, T&D planning, and system reliability — indicating a modernization agenda rather than a technology platform pivot. The company has no disclosed AI/ML capabilities, patents, software products, or third-party technology partnerships beyond standard regulatory and privacy compliance (CCPA/CPRA).
Unisource Energy Corporation firmographics
Firmographics- Name
- Unisource Energy Corporation
- Legal name
- UNS Energy Corporation
- Website
- https://uns.com
- Company type
- Private
- Founded year
- 1902
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- UNS Energy Corporation is a Tucson, Arizona-based regulated utility holding company, wholly owned by Fortis Inc., operating Tucson Electric Power (458,000+ electric customers in Tucson) and UniSource Energy Services (~278,000 gas and electric customers across northern and southern Arizona).
- Ownership category
- akta.pro rank
Unisource Energy Corporation industry classification
Industry- Product category
- Regulated Electric and Gas Utility
- NAICS
- Electric Power Generation, Transmission and Distribution (2211), Electric Power Distribution (221122), Electric Power Transmission, Control, and Distribution (22112), Utilities (22)
- SIC
- Electric Services (4911), Natural Gas Transmisison & Distribution (4923), Electric & Other Services Combined (4931)
- akta.pro primary industry
- Electric Distribution System Owners (Wires-Only Companies) (EUADABAI)
- akta.pro secondary industry
- Regulated Natural Gas Utility (LDC) Customer Acquisition & Switching (EUAAADAA)
Keywords
Where Unisource Energy Corporation is headquartered
LocationHeadquarters
- HQ city
- Tucson
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Unisource Energy Corporation business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Infrastructure, Operations, Supply Chain, Personnel, Technology or R&D, Marketing or Sales
Revenue model
- Electric Utility Service (TEP): Regulated electricity generation, transmission, and distribution services to over 458,000 customers in the Tucson metropolitan area through Tucson Electric Power.
- Gas and Electric Utility Service (UES): Natural gas and electric service to approximately 278,000 customers in northern and southern Arizona through UniSource Energy Services.
Distribution channels2 records
Unisource Energy Corporation product offering
Product offeringCore offering
UNS Energy Corporation is a holding company that provides regulated electricity and natural gas utility service through two wholly-owned subsidiaries. Tucson Electric Power (TEP) supplies electricity to more than 458,000 customers in the Tucson metropolitan area, while UniSource Energy Services (UES) provides natural gas and electric service to approximately 278,000 customers across northern and southern Arizona. Both subsidiaries operate under franchises and rate structures approved by Arizona state public utility commissions.
Product overview
UNS Energy Corporation is a holding company that operates two regulated utility subsidiaries: Tucson Electric Power (TEP) and UniSource Energy Services (UES). TEP provides electricity to over 458,000 customers in the Tucson metropolitan area, while UES delivers natural gas and electric service to approximately 278,000 customers across northern and southern Arizona. Both subsidiaries are under the parent company UNS Energy, which is itself a subsidiary of Fortis Inc., the largest investor-owned electric and gas distribution utility in Canada.
Differentiator
Problem solved
Functional benefit
Companies that use Unisource Energy Corporation
Customer profileNamed customers2 records
Segments2 records
Ideal customer profiles2 records
Unisource Energy Corporation technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Unisource Energy Corporation partnerships and signals
Strategic signalScale indicators4 records
Recent moves6 records
Expansion highlights5 records
Unisource Energy Corporation competitors and assessment
Company assessmentDirect peers
- El Paso Electric: Regulated electric utility serving parts of Texas, New Mexico, and Arizona. Comparable as a smaller regional regulated electric utility in the Southwest with similar climate, regulatory, and operational exposure.
- Arizona Public Service (APS): The largest electric utility in Arizona, serving customers across the state including Phoenix metro. Directly comparable as a regulated Arizona electric utility with similar regulatory exposure to the Arizona Corporation Commission.
- Salt River Project (SRP): Arizona-based utility providing electricity and water to the Phoenix metropolitan area. Comparable as a regulated utility operating in the same state with overlapping customer base and similar climate/geographic exposure.
- Southwest Gas Corporation: Natural gas distribution utility serving customers in Arizona, Nevada, and California. Closely comparable to UES's natural gas distribution operations and overlapping Arizona service territory.
- NV Energy: Regulated electric and gas utility serving Nevada and a small portion of California. Comparable as a Western US regulated utility with similar climate and growth profile; CFO Caleb Adcock previously held management roles here.
Regional players
- Hawaiian Electric Industries: Holding company for Hawaiian Electric, a regulated electric utility serving Hawaii. Comparable as a regulated electric utility holding company with similar business model, though in a distinct geography focused on island grids.
Broad incumbents
- NorthWestern Energy Group: Regulated electric and natural gas utility serving customers in Montana, South Dakota, and Nebraska. Comparable as a multi-jurisdiction regulated utility with combined electric and gas operations.
- MGE Energy: Holding company for Madison Gas and Electric, a regulated electric and gas utility in Wisconsin. Comparable as a smaller-cap regulated electric and gas utility holding company with a similar business model.
- Black Hills Energy: Multi-state regulated electric and gas utility serving customers across the Midwest, Mountain West, and Southwest. Comparable as a regulated utility holding company with both electric and gas distribution — UNS Energy's incoming CIO Erik Keller previously served as CIO here.
Others
- Fortis Inc. UNS Energy's parent company — the largest investor-owned electric and gas distribution utility in Canada with 3M+ customers across North America and the Caribbean. Included as the parent/strategic platform rather than a direct competitor.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Unisource Energy Corporation social profiles
Digital presenceUnisource Energy Corporation compliance and trust
Trust signalCompliance1 record
Unisource Energy Corporation financial estimates
Financial estimateRevenue estimate
Valuation estimate
Unisource Energy Corporation leadership team
Management profileNumber of profiles
Profiles19 records
Unisource Energy Corporation subsidiaries and ownership
Company hierarchySubsidiaries2 records
Unisource Energy Corporation funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Unisource Energy Corporation M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Unisource Energy Corporation
What does Unisource Energy Corporation do?
UNS Energy Corporation is a holding company that provides regulated electricity and natural gas utility service through two wholly-owned subsidiaries. Tucson Electric Power (TEP) supplies electricity to more than 458,000 customers in the Tucson metropolitan area, while UniSource Energy Services (UES) provides natural gas and electric service to approximately 278,000 customers across northern and southern Arizona. Both subsidiaries operate under franchises and rate structures approved by Arizona state public utility commissions.
Is Unisource Energy Corporation a public or private company?
Unisource Energy Corporation is a private company. It is classified as corporate owned and is currently operating.
When was Unisource Energy Corporation founded?
Unisource Energy Corporation was founded in 1902. It employs 1,001 to 5,000 people.
Where is Unisource Energy Corporation based?
Unisource Energy Corporation is headquartered in Tucson, United States, in the North America region.
How does Unisource Energy Corporation make money?
Two revenue lines are on record. Electric Utility Service (TEP) is the primary driver. The others are gas and Electric Utility Service (UES).
Who are Unisource Energy Corporation's main competitors?
Direct peers on record are El Paso Electric, Arizona Public Service (APS), Salt River Project (SRP), Southwest Gas Corporation and NV Energy. Hawaiian Electric Industries is listed as a regional player. Broad incumbents are NorthWestern Energy Group, MGE Energy and Black Hills Energy. Fortis Inc. is listed as an others.
Does Unisource Energy Corporation have an API?
No public API is recorded for Unisource Energy Corporation.
What industry is Unisource Energy Corporation in?
Unisource Energy Corporation's product category is Regulated Electric and Gas Utility. Its primary akta.pro industry code is EUADABAI, Electric Distribution System Owners (Wires-Only Companies), with a secondary code of EUAAADAA, Regulated Natural Gas Utility (LDC) Customer Acquisition & Switching. Its NAICS code is 2211 and its SIC code is 4911.