WGL Holdings

WGL Holdings was an integrated energy holding company headquartered in Washington, D.C., serving over 1 million customers across the District of Columbia, Maryland, and Virginia. Its operations spanned regulated natural gas distribution (Washington Gas), retail energy marketing (WGL Energy Services), commercial energy systems, and midstream energy services (WGL Midstream, Hampshire Gas). WGL Holdings was acquired by AltaGas on July 6, 2018, and continues to operate as a subsidiary.

WGL Holdings publishes 3 APIs on the APIs.io network. Tagged areas include Energy, Natural Gas, Utilities, Electricity, and Retail Energy.

The WGL Holdings catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

🌐 Visit website 📡 Source on GitHub
27.7/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemium
3 APIs
EnergyNatural GasUtilitiesElectricityRetail EnergyMidstreamFortune 1000

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 27.7/100 · emerging
Contract Quality 3.2 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 8.3 / 12
Discoverability 6.5 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/wgl-holdings: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

WGL Energy Services

WGL Energy Services is an unregulated retail energy subsidiary of WGL Holdings that sells natural gas and electricity to commercial, industrial, and residential customers in Mar...

WGL Midstream

WGL Midstream, Inc. is a subsidiary of Washington Gas Resources engaged in acquiring and optimizing natural gas storage and transportation assets. It focuses on midstream energy...

Hampshire Gas

Hampshire Gas Company owns and operates interests in natural gas storage facilities in and around Hampshire County, West Virginia. It provides underground natural gas storage se...

Pricing Plans 1

Published pricing tiers and plan structures.

Wgl Holdings Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Wgl Holdings Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Wgl Holdings Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Wgl Holdings Context

39 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

WGL Holdings API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

WGL Holdings Customer Account

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Wgl Holdings Customer Account Structure

0 properties

JSON STRUCTURE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Wgl Holdings Domain Security

TLSv1.3 · DMARC

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Ronald Blauch - WGL Holdings Inc

2026-05-25

XBRL Viewer

2026-05-25

Dissecting Corporate Culture Using Generative AI

2026-05-25

Visteon Set to Join S&P MidCap 400

2026-05-25

Climate and Energy

2026-05-25

Resources

Documentation 1

Reference material describing how the API behaves

JSONSchema
JSONSchema

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary
Vocabulary
 JSONLDContext
JSONLDContext

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Other 5

Properties that don't map to a standard resource type

Parent Company
Parent Company
 Washington Gas
Washington Gas
 WGL Energy
WGL Energy
 Sustainability
Sustainability
 Wikipedia
Wikipedia

Source (apis.yml)

apis.yml Raw ↑ 
aid: wgl-holdings
name: WGL Holdings
description: WGL Holdings was an integrated energy holding company headquartered in Washington, D.C., serving over 1 million
  customers across the District of Columbia, Maryland, and Virginia. Its operations spanned regulated natural gas distribution
  (Washington Gas), retail energy marketing (WGL Energy Services), commercial energy systems, and midstream energy services
  (WGL Midstream, Hampshire Gas). WGL Holdings was acquired by AltaGas on July 6, 2018, and continues to operate as a subsidiary.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wgl-holdings.png
tags:
- Energy
- Natural Gas
- Utilities
- Electricity
- Retail Energy
- Midstream
- Fortune 1000
url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-07-25'
specificationVersion: '0.19'
apis:
- aid: wgl-holdings:wgl-energy-services
  name: WGL Energy Services
  description: WGL Energy Services is an unregulated retail energy subsidiary of WGL Holdings that sells natural gas and electricity
    to commercial, industrial, and residential customers in Maryland, Virginia, Delaware, Pennsylvania, Ohio, D.C., and New
    Jersey. It also offers renewable energy products and carbon neutrality solutions.
  humanURL: https://www.wglenergy.com
  tags:
  - Retail Energy
  - Natural Gas
  - Electricity
  - Renewable Energy
  - Carbon Neutrality
  properties:
  - type: Website
    url: https://www.wglenergy.com
  - type: Customer Portal
    url: https://my.wges.com
  - type: Login
    url: https://one.wglenergy.com/dms/index.php
- aid: wgl-holdings:wgl-midstream
  name: WGL Midstream
  description: WGL Midstream, Inc. is a subsidiary of Washington Gas Resources engaged in acquiring and optimizing natural
    gas storage and transportation assets. It focuses on midstream energy services including gas storage, pipeline capacity,
    and energy asset management.
  humanURL: https://www.wgl.com
  tags:
  - Midstream
  - Natural Gas Storage
  - Pipeline
  - Energy Assets
  properties:
  - type: Website
    url: https://www.wgl.com
- aid: wgl-holdings:hampshire-gas
  name: Hampshire Gas
  description: Hampshire Gas Company owns and operates interests in natural gas storage facilities in and around Hampshire
    County, West Virginia. It provides underground natural gas storage services that support pipeline operations and supply
    reliability.
  humanURL: https://www.wgl.com
  tags:
  - Natural Gas Storage
  - Underground Storage
  - West Virginia
  - Pipeline
  properties:
  - type: Website
    url: https://www.wgl.com
common:
- type: DomainSecurity
  url: security/wgl-holdings-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/wgl
- type: Website
  url: https://www.wglholdings.com
- type: Parent Company
  url: https://www.altagas.ca
- type: Washington Gas
  url: https://www.washingtongas.com
- type: WGL Energy
  url: https://www.wglenergy.com
- type: Sustainability
  url: https://sustainability.wglholdings.com
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/WGL_Holdings
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/vocabulary/wgl-holdings-vocabulary.yml
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/json-ld/wgl-holdings-context.jsonld
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/json-schema/wgl-holdings-customer-account-schema.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com