Utility overview
- Legal name
- SEMCO Energy Gas Company
- Parent organization
- Not listed
- Ownership type
- Investor-Owned
- Utility class
- Major Regulated
Official website and contact
- Official website: Visit official website (opens in a new tab)
- Customer service: 800-624-2019
- Gas emergency: Not listed
- Email: Not listed
- Address: Not listed
Published state services
Michigan — MI
Service area: Approximately 25 Michigan counties; ~330,000 customers (company customer booklet).
Rate jurisdiction: Michigan Public Service Commission
Customer classes: Commercial, Residential
Last confirmed: Aug 25, 2026
- State customer URL: Open link (opens in a new tab)
- Tariff or territory source: Open link (opens in a new tab)
Utility identity sources
- Customer Booklet (opens in a new tab)
Regulatory Filing · SEMCO Energy Gas Company
- MPSC No. 1 Rate Book (opens in a new tab)
Tariff · SEMCO Energy Gas Company
State-service sources
Michigan — MI
- SEMCO Energy Gas Company MPSC Approved Rate Books (opens in a new tab)
State Regulator Inventory · MPSC
Verified utility identity
Verified means GCC confirmed utility identity, retail gas-distribution status, and state-service evidence against authoritative sources.
Confirmation status
- Last confirmed
- Aug 25, 2026
- Reconfirmation status
- Current
Directory-information notice
GCC provides directory information only. Listings are not legal advice, regulatory advice, endorsements, or guarantees of utility service eligibility.
Service-area summaries are high-level and do not guarantee service at a specific address. Contact the listed utility directly for address-level eligibility.