MI · gas · U-20479
Closed case·Complete·Authorized
The December 2019 settlement remains the latest reviewed SEMCO base-rate authorization while U-22002 is pending.
SEMCO requested a $38.1 million annual increase in its 2019 gas rate case. The MPSC approved a settlement authorizing a $19.9 million annual increase, a 9.87% ROE, and a 6.44% overall return.
Dec 6, 2019
Not scheduled
Case stage
complete
Filed
Not recorded
Testimony
Not recorded
Hearings
Not recorded
Briefing
Not recorded
Decision
Dec 6, 2019
Rates effective
Current stage
State rules
This docket is a full base-rate review. Selected charges can change on separate schedules without reopening every issue in this case.
Full base-rate review
No fixed recurring interval
A utility files when it seeks a base-rate change. The MPSC's general framework does not impose a common annual or multi-year filing cycle, but it requires a final Commission decision within 10 months of the application.
Rate period: Filing-specific forecast, historical support, and standard rate-case schedules.
Governing rule ↗Between full reviews
Power and gas supply cost recovery
Variable surcharge · annual reconciliation
PSCR and GCR surcharges recover fuel, purchased power, transmission, and gas-supply costs above the amount in base rates. Actual costs are reconciled annually after a prudence review.
Governing source ↗Commission decision
Utility request and Commission-authorized outcome.
| Metric | Utility request | Authorized outcome | Like-for-like difference |
|---|---|---|---|
| Annual revenue increase | $38.11M Projected test year 2020 | $19.9M Projected test year 2020 · Dec 6, 2019 | — Not compared: scope, gross/net basis differ |
| Rate base | Not available Not captured in current case sources | $718.9M Projected test year 2020 · Dec 6, 2019 | — |
| Return on equity | Not available Not captured in current case sources | 9.87% Projected test year 2020 · Dec 6, 2019 | — |
| Common equity ratio | Not available Not captured in current case sources | 54% Projected test year 2020 · Dec 6, 2019 | — |
| Residential bill impact | Not available Not captured in current case sources | Not available Authorized value not captured | — |
1 event · 1 document · 3 citations
Material filings, hearings, orders, and effective dates.
Dec 6, 2019
MPSC approved the SEMCO settlement
official commission · completed
Docket and evidence documents linked to this proceeding.
MPSC approves $19.9 million rate increase for SEMCO Energy Gas
evidence · direct · Dec 6, 2019
Field-level excerpts and review metadata supporting material facts.
MPSC approves $19.9 million rate increase for SEMCO Energy Gas
commission press release · Dec 6, 2019
SEMCO Energy Gas rate-case summary - Case U-22002
utility filing · Feb 23, 2026
SEMCO Energy Gas rate-case summary - Case U-22002
utility filing · Feb 23, 2026
Stage-preserving economics and party positions as published in the canonical record.
| Metric | Stage | Party | Period | Value | Evidence |
|---|---|---|---|---|---|
| Common equity ratio | authorized | Michigan Public Service Commission | Projected test year 2020 | 54% | |
| Overall rate of return | authorized | Michigan Public Service Commission | Projected test year 2020 | 6.44% | |
| Rate base | authorized | Michigan Public Service Commission | Projected test year 2020 | $718.9M | |
| Annual revenue change | authorized | Michigan Public Service Commission | Projected test year 2020 | $19.9M | |
| Annual revenue change | utility request | SEMCO Energy Gas Company | Projected test year 2020 | $38.11M | |
| Return on equity | authorized | Michigan Public Service Commission | Projected test year 2020 | 9.87% |