Guam Power Authority

What Guam Power Authority does

Guam Power Authority (GPA) is a public corporation and enterprise fund of the Government of Guam, established by the Guam Power Authority Act of 1968, that operates as the sole regulated electric power utility for the U.S. territory of Guam. GPA owns and operates 464 MW of oil-fired generation (Cabras Units 1 & 2 on low-sulfur residual fuel oil, Piti 8 & 9 on ULSD) and 85.3 MW of renewable generation (including the 60 MW Mangilao solar farm), supported by a 25 MW / 25 MWh battery energy storage system, 1,839 miles of transmission and distribution lines, and 29 substations serving 53,777 customers across residential, commercial, government, and military rate classes. The utility runs a Power System Control Center with SCADA, an independent fiber-optic network for secure grid communications, smart meter infrastructure feeding the MyEnergyGuam customer portal, and a cybersecurity program aligned to NIST, NERC CIP, and DOE frameworks.

GPA generates revenue through regulated electricity sales under PUC-approved rate schedules, supplemented by long-term power purchase agreements with independent power producers — most notably a 25-year PPA with KEPCO and Korea East-West Power for the 198 MW Ukudu combined cycle plant (~$2.12B contract value) and agreements covering the Mangilao, Yona, and Dededo solar projects. Fuel costs are recovered through the Levelized Energy Adjustment Clause (LEAC) mechanism audited by the Guam Public Utilities Commission. Major strategic customers include the U.S. Navy (extended 10-year contract in July 2022, ~20% of island load) and Government of Guam agencies.

The utility is executing a multi-year transition under its Clean Energy Master Plan, targeting 50% renewable energy by 2030 and 100% by 2040, anchored by Korean consortium partnerships (KEPCO, Korea East-West Power, Samsung C&T) and backed by Export-Import Bank of Korea, Natixis, and DBS Bank financing. GPA carries investment-grade credit ratings (Fitch BBB/Stable, Moody's Baas2/Stable, S&P BBB/Stable), employs 443 people (FY2024), and operates on an FY2024 budget of $556M including fuel pass-through.

Name

Guam Power Authority

Legal name

Guam Power Authority

Website

https://guampowerauthority.com

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Guam Power Authority is the sole regulated electric power utility for the U.S. territory of Guam, providing generation, transmission, and distribution services to 53,777 residential, commercial, government, and military customers under PUC-approved rates and long-term PPAs.

Ownership category

akta.pro rank

Product category

Electric Utility Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112), Electric Power Distribution (221122)

SIC

Electric Services (4911)

akta.pro primary industry

Utility-Scale Power Generation Asset Management (EUAEAMAA)

akta.pro secondary industries

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA), Electrical Systems O&M (Substations, Transformers, Switchgear, Protection & Controls) (EUAMAGAH), Operations Control & Dispatch (Remote Operations Centers, Curtailment, Compliance) (EUAMAGAK)

Keywords

• Electric power utility
• Electricity distribution
• Power generation
• Grid management
• Renewable energy services

Headquarters

HQ city

Hagåtña

HQ country

Guam

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Operations, Infrastructure, Personnel, Technology or R&D, Supply Chain, Others

Revenue model

1. Electricity Sales: GPA generates revenue through electricity sales under regulated rate schedules to residential, commercial, government, and industrial customers. The utility purchases power from independent power producers under long-term power purchase agreements and resells electricity to end customers. Revenue is subject to regulation by the Guam Public Utilities Commission.
2. Power Purchase Agreement Revenue (Ukudu Plant): The 198 MW Ukudu combined cycle power plant, jointly owned by KEPCO (60%) and Korea East-West Power (40%), sells electricity to GPA under a 25-year power purchase agreement. Expected to generate approximately $2.12 billion in revenue over the contract term.
3. Solar Power Purchase Agreements: GPA purchases solar energy from various solar farms including the 60 MW Mangilao solar project and the planned 132 MW Yona solar project, both under long-term PPAs with Korean consortium partners.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels8 records

Core offering

Guam Power Authority generates, transmits, and distributes electricity to approximately 53,777 residential, commercial, government, and U.S. Navy customers across Guam. The utility operates 464 MW of oil-fired generation and 85.3 MW of renewable capacity across 1,839 miles of transmission and distribution lines and 29 substations, with rates regulated by the Guam Public Utilities Commission and the Levelized Energy Adjustment Clause (LEAC) governing fuel-cost pass-throughs. Customer-facing services include the MyEnergyGuam smart-meter usage portal, PayGPA online bill payment, the Beat the Peak demand-response program, and the Energy Sense rebate program for energy-efficient appliances.

Product overview

Guam Power Authority (GPA) operates as Guam's sole electric power utility, providing generation, transmission, and distribution services to approximately 53,777 customers across the island. The utility manages 464 MW of oil-fired generation capacity and 85.3 MW of renewable generation capacity across 1,839 miles of transmission and distribution lines with 29 substations. GPA's customer-facing digital ecosystem includes the MyEnergyGuam portal for energy consumption tracking, the PayGPA online payment system, and the Energy Sense rebate program. Grid operations leverage SCADA systems, smart meter infrastructure, and a 25 MW/25 MWh battery energy storage system for stability. Major infrastructure projects include the 198 MW Ukudu combined cycle power plant, the 60 MW Mangilao solar farm, and the planned 132 MW Yona solar-plus-storage project. GPA's integrated resource planning targets 50% renewable energy by 2030 and 100% by 2040.

Differentiator

Problem solved

Functional benefit

Products and services

• Electric Power Distribution Service Core regulated electricity distribution service providing electric power to residential (Rate R), condominium/apartment (Rate D), general service non-demand (Rate G), general service demand (Rate J), large power service (Rate P), and other customers across Guam under rates approved by the Guam Public Utilities Commission.
• MyEnergyGuam Customer Portal Online customer portal enabling GPA customers to track current and projected energy usage, view daily kilowatt-hours consumed, set energy consumption alerts, and access rate calculators for bill estimation, leveraging smart-meter AMI infrastructure.
• PayGPA Online Bill Payment Online and 24/7 automated phone payment platform allowing GPA customers to pay electricity bills electronically without visiting a customer service center.
• Beat the Peak Demand Response Program Demand response initiative encouraging GPA customers to shift energy usage from peak hours (5PM to 11PM) to off-peak morning and midday hours when solar systems produce more power, helping prevent scheduled outages, reduce costs, and improve grid stability.
• Energy Sense Rebate Program Cash rebate program offering $100 to $800 to GPA customers for purchasing energy-efficient air conditioning systems, with online application and more than 31,000 rebate applications processed and over $9 million in rebates paid since 2015.

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core, major and minor.

• KEPCO (Korea Electric Power Corporation)coreStrategic or Co-development Partner · 1 January 2019KEPCO signed energy conversion agreement in 2019 to build the Ukudu combined cycle power plant. Jointly owns the plant with Korea East-West Power (60%/40%). KEPCO also operates 60 MW solar project and is building 132 MW solar project in Guam. Partnership represents major infrastructure investment and technology transfer for Guam's energy future.
• Korea East-West PowercoreStrategic or Co-development PartnerCo-owner (40% stake) of the 198 MW Ukudu combined cycle power plant with KEPCO. Partnership enables development of modern efficient power generation infrastructure for Guam.
• Samsung C&T CorporationmajorTechnology or IntegrationPart of Korean consortium (with KEPCO and Korea East-West Power) for the Yona Solar Power Project. Samsung C&T involvement in the $514 million credit agreement for the 132 MW solar-plus-storage project.
• UOG Sea GrantminorStrategic or Co-development PartnerGPA partners with University of Guam through Guam Energy Sense Program. UOG Sea Grant is one of 33 Sea Grant programs nationally, dedicated to expanding energy efficiency programs through partnerships with government agencies.
• Guam Energy OfficeminorStrategic or Co-development PartnerGuam Energy Office supports energy conservation, efficiency, and renewable programs. Implements grants from U.S. Department of Energy State Energy Program. Provides technical assistance and EV rebates to consumers and businesses.
• Sun Energy HoldingsmajorStrategic or Co-development PartnerFour entities (Sun Energy LLC 1, 2, 3, and 4) owned by Sun Energy Holdings will sell energy to GPA from a 57.4 MW solar farm on former Dededo golf course under 25-year PPA at rates under GPA's price cap.
• Greenberg Traurig (Legal Counsel)minorImplementation/ SI/ Consulting PartnerLaw firm advising Korean consortium on $514 million financing for Guam Solar-Plus-Storage Project.

Scale indicators12 records

Recent moves7 records

Expansion highlights6 records

Regional players

• American Samoa Power Authority (ASPA): US territorial utility serving American Samoa — a close regional peer also reliant on imported diesel, facing similar island-grid vulnerabilities and managed by similar US federal grant programs.
• Commonwealth Utilities Corporation (CUC) - CNMI: Public utility serving the US Commonwealth of the Northern Mariana Islands (Saipan, Tinian, Rota) — comparable small-scale Pacific island utility with similar fuel-import exposure and regulatory framework.

Direct peers

• Hawaiian Electric Industries: Investor-owned utility serving the Hawaiian Islands — a US island grid with high renewable penetration targets, oil-fired legacy generation, and similar regulatory pressure on rates and renewable transition.
• Maui Electric Company: Subsidiary of Hawaiian Electric serving Maui, Lana'i, and Moloka'i — small-island US utility facing identical challenges in renewable integration, wildfire/storm exposure, and rate affordability.
• Kauai Island Utility Cooperative (KIUC): Member-owned electric cooperative on the Hawaiian island of Kaua'i — comparable small island utility with high renewable penetration, solar-plus-storage operations, and grid-forming inverter experience directly applicable to GPA's Yona project.
• Puerto Rico Electric Power Authority (PREPA): US territory public utility serving Puerto Rico with comparable regulatory structure, PUC oversight, severe storm exposure (Hurricane Maria), and aging oil-fired generation undergoing renewable transition.

Broad incumbents

• Consolidated Edison: Large US investor-owned regulated utility with substantial investment-grade debt programs, regulated rate base, and SCADA-based grid management — relevant incumbent comparable for utility financing and operations benchmark.
• Pacific Power (PacifiCorp / Berkshire Hathaway Energy): US investor-owned utility serving six western states with significant renewable portfolio and regulated rate base — broader incumbent peer for utility operating model, transmission planning, and renewable integration practices.
• Sacramento Municipal Utility District (SMUD): Large public-power municipal utility with industry-leading renewable penetration (>60% carbon-free) and community-owned structure paralleling GPA's not-for-profit enterprise-fund model.

Others

• KEPCO (Korea Electric Power Corporation): Strategic partner and 60% co-owner of the Ukudu plant with deep operating involvement in Guam's grid; relevant comparable for utility-scale generation economics, nuclear/CCGT experience, and KEPCO's parallel Korea-side renewable transition.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@guampowerauthority4866/featured
• Facebookfacebook.com/GuamPowerAuthority
• Instagraminstagram.com/guampowerauthority
• Xx.com/guampower

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Guam Power Authority