Industry vertical
Utilities
Companies responsible for generating, transmitting, and distributing essential services such as electricity, natural gas, and water.
39 providers
60 APIs
22 enterprise adopters
Utilities on the APIs.io network indexes 39 providers publishing 60 APIs across this industry vertical.
Notable providers include Xcel Energy, Southern Company, CMS Energy, Southwest Gas, WEC Energy Group, pg-and-e, and 33 more — each profile links out to that provider’s APIs, schemas, and governance artifacts.
Related industries: Energy, Construction, Industrial, and Climate & Sustainability. Browse every industry vertical at industries.apis.io.
About this industry
The Utilities vertical on the APIs.io network is tracked across 1 sub-sector — Energy Distribution — mapping 39 companies from ongoing API Evangelist industry research to the providers and APIs they operate on the network.
Market demand
Providers above are the supply side. This is the demand side — enterprises adopting API & AI technology in this vertical, drawn from API Evangelist Insights. Names and maturity are enterprise-scoped; they don't overlap with the provider catalog.
22enterprises adopting
#38 / 50adoption maturity rank
Statefulnessstrongest layer
Customization & Adaptationweakest layer
Leading adopters
Sempra147Hawaiian Electric Industries121FirstEnergy101NextEra Energy100Xcel Energy86American Electric Power80AES Corporation78NiSource66Duke Energy64Pg And E57Williams Companies56Portland General Electric56
AI & API adoption maturity
Mean adoption intensity across the enterprises above, by capability layer — how this vertical is maturing, from foundational models through governance and FinOps.
Demand data: API Evangelist Insights — enterprise API & AI adoption signals.
Providers (39)
| Provider | Description | APIs | Rating |
|---|---|---|---|
| Xcel Energy | Xcel Energy is a major U.S. electricity and natural gas utility holding company headquartered in Minneapolis, Minnesota, providing service to approximately 3.7 million electrici... | 29 | developing |
| Southern Company | Southern Company is a leading American gas and electric utility holding company headquartered in Atlanta, Georgia. Through its subsidiaries — Alabama Power, Georgia Power, Missi... | 1 | thin |
| CMS Energy | CMS Energy is an energy holding company whose primary subsidiary is Consumers Energy, an electric and natural gas utility serving customers in Michigan. Consumers Energy partici... | 6 | thin |
| Southwest Gas | Southwest Gas Holdings is a natural gas distribution company that purchases, distributes, and transports natural gas for customers in Arizona, Nevada, and California. As a Fortu... | 2 | thin |
| WEC Energy Group | WEC Energy Group (NYSE: WEC) is one of the nation's premier energy companies, serving 4.4 million customers across Wisconsin, Illinois, Michigan, and Minnesota with electricity ... | 4 | thin |
| pg-and-e | Pacific Gas and Electric Company (PG&E) is one of the largest combined natural gas and electric energy companies in the United States, serving approximately 16 million people in... | 3 | thin |
| UGI Corporation | UGI Corporation is a Fortune 500 international energy distribution and services company headquartered in King of Prussia, Pennsylvania. UGI distributes natural gas, liquid propa... | 1 | thin |
| Williams Companies | Williams Companies is a Fortune 500 energy infrastructure company that operates approximately 33,000 miles of natural gas pipeline infrastructure, moving roughly one-third of th... | 2 | thin |
| AES Corporation | The AES Corporation is a Fortune 500 global energy company that generates and distributes electrical power. AES operates a diverse portfolio of renewable, thermal, LNG, and batt... | 2 | emerging |
| Atmos Energy | Atmos Energy is one of the largest natural-gas-only distributors in the United States, delivering natural gas to residential, commercial, public-authority, and industrial custom... | 2 | emerging |
| CenterPoint Energy | CenterPoint Energy is a domestic energy delivery company that provides electric transmission and distribution, natural gas distribution, and energy services operations serving r... | 3 | emerging |
| Consolidated Edison | Consolidated Edison, Inc. (Con Edison) is a Fortune 500 holding company that, through its subsidiaries, provides electric, natural gas, and steam service to customers in New Yor... | 2 | emerging |
| Constellation Energy | Constellation Energy Corporation is a Fortune 500 clean-energy producer and competitive retail electricity and natural gas supplier in the United States, generating power from a... | 0 | emerging |
| Ameren | Ameren Corporation is a regulated electric and natural gas utility serving customers in Missouri and Illinois. The company provides reliable energy delivery, smart grid infrastr... | 2 | emerging |
| Portland General Electric | Portland General Electric is a major US corporation and Fortune 1000 company. The Portland General Electric API provides programmatic access to its platform services, data, and ... | 1 | emerging |
| Exelon | Exelon Corporation is one of the largest energy delivery companies in the United States, serving more than 10 million customers through its regulated electric and gas utility su... | 0 | minimal |
| FirstEnergy | FirstEnergy is one of the largest investor-owned electric systems in the United States, with utilities serving customers in Ohio, Pennsylvania, New Jersey, West Virginia, Maryla... | 0 | minimal |
| American Electric Power | American Electric Power (AEP) is one of the largest electric utilities in the United States, delivering electricity to more than 5.6 million customers across 11 states through i... | 0 | minimal |
| Eversource Energy | Eversource Energy is the largest energy delivery company in New England, providing electric, natural gas, and water service to millions of customers in Connecticut, Massachusett... | 0 | minimal |
| Hubbell | Hubbell is a global manufacturer of high-quality electrical and electronic products for non-residential and residential construction, industrial, and utility applications. The c... | 0 | minimal |
| MDU Resources Group | MDU Resources Group is a diversified natural resources company with operations in regulated energy delivery, construction materials, and construction services. No public develop... | 0 | minimal |
| NiSource | NiSource is one of the largest fully-regulated utility companies in the United States, serving approximately 3.5 million natural gas and electric customers across six states thr... | 0 | minimal |
| Public Service Enterprise Group | Public Service Enterprise Group (PSEG) is a publicly traded diversified energy holding company headquartered in Newark, New Jersey. Through its subsidiaries including PSE&G and ... | 0 | minimal |
| Dominion Energy | Dominion Energy is one of the nation's largest producers and transporters of energy, providing electricity and natural gas to customers across multiple U.S. states including Vir... | 0 | minimal |
| Hawaiian Electric Industries | Hawaiian Electric Industries (HEI) is a Hawaii-based holding company whose primary subsidiaries provide electric utility service to roughly 95% of Hawaii's residents through Haw... | 0 | minimal |
| NextEra Energy | NextEra Energy, Inc. is a Fortune 500 American energy company and one of the largest electric utility holding companies in the United States. It is the world's largest generator... | 0 | minimal |
| PPL | PPL Corporation is a U.S. energy company that delivers electricity and natural gas to customers through its regulated utilities in Pennsylvania, Kentucky, and Rhode Island. PPL ... | 0 | minimal |
| Entergy | Entergy Corporation is an integrated energy company headquartered in New Orleans, Louisiana, providing electricity to more than 3 million utility customers across Arkansas, Loui... | 0 | minimal |
| NRG Energy | NRG Energy is a Fortune 500 American energy company. This repository captures the APIs, developer tools, and machine-readable API artifacts for NRG Energy. No public APIs have b... | 0 | minimal |
| Puget Energy | Puget Energy is the parent company of Puget Sound Energy (PSE), a regulated electric and natural gas utility serving customers across Washington state. Headquartered in Bellevue... | 0 | minimal |
| OGE Energy | OGE Energy is the parent company of Oklahoma Gas and Electric Company, a regulated electric utility serving customers in Oklahoma and western Arkansas. | 0 | minimal |
| Talen Energy | Talen Energy is an independent power producer and energy infrastructure company and a Fortune 1000 firm. The company operates a portfolio of nuclear, natural gas, oil, and renew... | 0 | minimal |
| dte-energy | DTE Energy is a Detroit-based diversified energy company involved in the development and management of energy-related businesses and services nationwide, with utility operations... | 0 | minimal |
| edison-international | Edison International is the parent company of Southern California Edison, one of the nation's largest electric utilities, and Edison Energy, a portfolio of competitive energy se... | 0 | minimal |
| Evergy | Profile for Evergy in the API Evangelist network. Fortune F1000 (rank 539). | 0 | minimal |
| Alliant Energy | Fortune 1000 company Alliant Energy. Public API documentation has not yet been catalogued in the API Evangelist network. | 0 | minimal |
| duke-energy | Duke Energy is one of the largest electric power holding companies in the United States, supplying electricity and natural gas to millions of customers across the Southeast and ... | 0 | minimal |
| pinnacle-west-capital | Pinnacle West Capital is a holding company whose principal subsidiary is Arizona Public Service, the largest electricity utility in Arizona. | 0 | minimal |
| sempra | Sempra is a North American energy infrastructure company with operations in Texas, California, Mexico, and emerging markets, serving utility customers and developing energy netw... | 0 | minimal |
APIs in this industry (60)
All 60 APIs.
Fluence Mosaic API
AES Corporation
Mosaic is an AI-powered intelligent bidding application developed by Fluence (an AES and Siemens company) for optimizing energy market pa...
Fluence Nispera API
AES Corporation
Nispera is an asset performance management software platform by Fluence (an AES and Siemens company) for optimizing the performance of re...
Ameren Renewables Portal API
Ameren
The Ameren Renewables Portal enables generation owners to manage community solar and collectively owned generation facilities, track subs...
Ameren Share My Usage API
Ameren
The Ameren Illinois Share My Usage API implements the Green Button Connect My Data program, providing authorized third parties access to ...
Atmos Energy Account Management
Atmos Energy
Online account management portal for Atmos Energy customers providing access to billing, payment, usage history, service requests, and ac...
Atmos Energy Builder Portal
Atmos Energy
The Atmos Energy Builder Portal enables builders and property developers to request and schedule natural gas service lines and meter sets...
CMS Energy Authorizations API
CMS Energy
The Authorizations API from CMS Energy — 2 operation(s) for authorizations.
CMS Energy Bills API
CMS Energy
The Bills API from CMS Energy — 1 operation(s) for bills.
CMS Energy GreenButton API
CMS Energy
The GreenButton API from CMS Energy — 1 operation(s) for greenbutton.
CMS Energy Intervals API
CMS Energy
The Intervals API from CMS Energy — 1 operation(s) for intervals.
CMS Energy Meters API
CMS Energy
The Meters API from CMS Energy — 2 operation(s) for meters.
Consumers Energy Green Button Connect My Data API
CMS Energy
The Consumers Energy Green Button Connect My Data API exposes customer-authorized electric and natural-gas usage data to registered third...
CenterPoint Energy Green Button Connect My Data
CenterPoint Energy
CenterPoint Energy has committed to the Green Button initiative, providing customers and authorized third parties with secure download an...
CenterPoint Energy Usage History Inquiry API
CenterPoint Energy
Automated access to residential and commercial billing history and electricity usage as measured by CenterPoint's Interval Data Recorders...
Centerpoint Connect Services API
CenterPoint Energy
The Centerpoint API Developer Portal publishes Services API references, examples, and troubleshooting for partners integrating with the C...
Green Button Connect My Data
Consolidated Edison
Green Button Connect My Data is the OAuth2-based ESPI service that lets Con Edison customers authorize a registered third party to receiv...
Green Button Download My Data
Consolidated Edison
Customer-driven file export that lets Con Edison residential and small commercial accounts download up to one year of smart-meter interva...
Portland General Electric API
Portland General Electric
The Portland General Electric API provides access to platform services and data for enterprise integration and automation.
Southern Company Customer Account API
Southern Company
The Southern Company Customer Account API provides access to utility account data for Alabama Power, Georgia Power, and Mississippi Power...
Southwest Gas Agency Portal API
Southwest Gas
The Southwest Gas Agency Portal provides access for charitable organizations and assistance agencies to look up customer accounts and sub...
Southwest Gas My Account API
Southwest Gas
The Southwest Gas My Account API powers the online customer portal and mobile application for natural gas utility customers in Arizona, N...
UGI International
UGI Corporation
UGI International manages LPG and natural gas distribution operations across Europe, primarily through Flaga, AvantiGas, and other region...
Green Button Energy Usage Data API
WEC Energy Group
Green Button is a standardized API for accessing customer energy usage data. Based on the ESPI (Energy Services Provider Interface) stand...
Peoples Gas Customer Service API
WEC Energy Group
Customer account and billing API for Peoples Gas, serving natural gas customers in the Chicago metropolitan area. Supports account manage...
WEC Energy Group Customer Portal API
WEC Energy Group
Web and mobile API powering the WEC Energy Group customer self-service portal. Enables customers to view account information, pay bills, ...
We Energies Outage Map API
WEC Energy Group
Real-time electricity outage information for We Energies service territory in Wisconsin. Provides geographic outage data, estimated resto...
Northwest Pipeline EBB
Williams Companies
Northwest Pipeline is a major interstate natural gas pipeline operated by Williams, providing electronic bulletin board access for nomina...
Transco Nominations API
Williams Companies
The Transco Nominations API enables natural gas shippers to submit, modify, and track pipeline transportation nominations on the Transco ...
Xcel Energy ApplicationInformation API
Xcel Energy
Third-party application registration metadata used by the Data Custodian.
Xcel Energy Authorization API
Xcel Energy
OAuth 2.0 authorizations granted by retail customers to third-party applications.
Xcel Energy Batch API
Xcel Energy
Bulk Atom feeds aggregating multiple resources for a subscription.
Xcel Energy Configuration API
Xcel Energy
Configuration resource for a device.
Xcel Energy DER API
Xcel Energy
Distributed Energy Resource programs, controls, and settings.
Xcel Energy DemandResponse API
Xcel Energy
Demand Response programs and load control events.
Xcel Energy DeviceCapability API
Xcel Energy
Root resource that lists the function sets supported by the meter.
Xcel Energy DeviceInformation API
Xcel Energy
Manufacturer, hardware, and firmware metadata for a device.
Xcel Energy DeviceStatus API
Xcel Energy
Operational status, op-time, and event indicators for a device.
Xcel Energy ElectricPowerQualitySummary API
Xcel Energy
Aggregate power-quality measurements for a UsagePoint.
Xcel Energy ElectricPowerUsageSummary API
Xcel Energy
Billing-period aggregate summaries of electric power usage.
Xcel Energy EndDevice API
Xcel Energy
End devices managed by the meter (the meter itself and any subordinate devices).
Xcel Energy FunctionSetAssignments API
Xcel Energy
Groups of function sets assigned to an EndDevice by the server operator.
Xcel Energy IntervalBlock API
Xcel Energy
Time-series interval-level energy usage data captured at a meter.
Xcel Energy LocalTimeParameters API
Xcel Energy
Time zone and daylight-savings-time parameters used to interpret interval timestamps.
Xcel Energy Log API
Xcel Energy
Log events emitted by the device.
Xcel Energy Messaging API
Xcel Energy
Text and HTML messages targeted at end-users.
Xcel Energy MeterReading API
Xcel Energy
Container for measured IntervalBlocks captured at a UsagePoint.
Xcel Energy MirrorUsagePoint API
Xcel Energy
Client-supplied mirror usage points used to publish readings to the server.
Xcel Energy PowerStatus API
Xcel Energy
Real-time power flow and battery status for a device.
Xcel Energy ReadingType API
Xcel Energy
Metadata describing the units, multiplier, accumulation, and flow direction of meter readings.
Xcel Energy Registration API
Xcel Energy
EndDevice registration and provisioning state.
Xcel Energy Response API
Xcel Energy
Acknowledgement responses for received events.
Xcel Energy RetailCustomer API
Xcel Energy
Retail customer, account, agreement, service location, and meter information.
Xcel Energy SelfDevice API
Xcel Energy
Convenience resource referring to the device that hosts the API.
Xcel Energy ServiceStatus API
Xcel Energy
Operational status of the Green Button Connect My Data service.
Xcel Energy Subscription API
Xcel Energy
Subscription/notification resources for resource-change events.
Xcel Energy Time API
Xcel Energy
Current device time and time-zone configuration.
Xcel Energy UsagePoint API
Xcel Energy
Logical metered points that produce energy usage data for a service.
pg-and-e Authorization API
pg-and-e
OAuth 2.0 authorization for customer data access.
pg-and-e Subscriptions API
pg-and-e
Manage data subscriptions for customer accounts.
pg-and-e Usage API
pg-and-e
Retrieve energy usage interval data.
Related industries
Sub-sectors tracked in this industry: Energy Distribution.