How to Switch Electricity Suppliers in Michigan: Cap, Queue, and Return-to-Service Rules

Step 1: Confirm eligibility under the cap

Michigan opened retail access under PA 141 of 2000, capped by PA 286 of 2008 at 10 percent of each utility's prior-year weather-adjusted retail sales [mcl-460-10a] [mpsc-choice-2025-report]. All retail customers of rate-regulated utilities may apply, but participation is limited by the cap [mpsc-choice-2025-report].

Eligible utilities include DTE Electric, Consumers Energy, Indiana Michigan Power, Upper Peninsula Power, Upper Michigan Energy Resources, and Cloverland Electric [mpsc-choice-2025-report]. Municipal utilities and most cooperatives are not open [mpsc-choice-2025-report].

In 2025, 5,517 customers (2,172 MW, almost all commercial and industrial) were on choice with 5,101 more in the queue [mpsc-choice-2025-report].

Step 2: Enter the queue at service application

Under MCL 460.10a utilities maintain rank-ordered queue lists filed each January 15 [mcl-460-10a]. Submit queue enrollment when applying for new service. A grow in buildout that waits until energizing to enter the queue loses position to earlier entrants.

The eligibility checker at state deregulation eligibility tool confirms whether a utility territory is theoretically open, but the cap tracker determines practical access.

Step 3: Run on full service while waiting

While queued, optimize utility full service:

• DTE: Compare D4 secondary vs D11 primary for large grows [dte-rate-book]
• Consumers: Compare GSD vs GPD or GPTU [consumers-large-business-rates]
• Demand management: Limit on-peak billing demand ratchets

Near-term tariff savings often exceed what an AES contract would offer if an allotment were available.

Step 4: Monitor the Cap Tracking System

DTE and Consumers publish daily Cap Tracking Systems [dte-electric-choice] [consumers-electric-choice]. Consumers' September 3, 2026 report showed a 2026 cap of 3,661,684 MWh against 3,619,680 MWh enrolled, 42,004 MWh of allotments available, and 2,846 customers with 5,333,737 MWh waiting [consumers-electric-choice].

When allotments open, the next customers in line have five business days to accept [mcl-460-10a].

Step 5: Pull bills and interval data

When an allotment is imminent, gather account number, rate schedule, monthly kWh, monthly peak kW, and interval data for demand-metered accounts. AES suppliers need load shape to price MISO Zone 7 capacity [mpsc-choice-2025-report].

Step 6: Verify MPSC licensing

Twenty licensed Alternative Electric Suppliers operated in 2025 [mpsc-choice-2025-report]. Confirm licensing on MPSC records before signing [mpsc-cap-data].

Step 7: Request AES offers with capacity terms

Choice customers must arrange their own capacity or take utility capacity service [mpsc-choice-2025-report]. MISO moved to seasonal capacity auctions [mpsc-choice-2025-report]. Compare all-in pricing with explicit capacity pass-through language.

Step 8: Sign and enroll

Review contract terms. DTE choice customers face a two-year initial term [dte-electric-choice]. The AES submits enrollment to the utility.

Step 9: Confirm switch and calendar return rules

Verify supply moved on the effective date. Note DTE's December 1 notice deadline for June-September peak return [dte-electric-choice]. Late DTE returns pay punitive rates [dte-electric-choice]. Consumers allows one switch per month for $5 [consumers-electric-choice].

Common mistakes in Michigan

• Skipping queue enrollment at service application
• Assuming choice works like Ohio or Illinois (immediate switching)
• Moving to choice without modeling DTE return-to-service penalties
• Ignoring primary-voltage savings while waiting for an allotment
• Comparing AES quotes without MISO capacity pass-throughs

Documents to gather before queue enrollment

When applying for new service, bring the legal entity name that matches the cannabis license, federal EIN, site control documentation, and expected load letter from your electrical engineer. The utility uses expected demand to assign initial rate class and queue priority within the commercial segment [mpsc-choice-2025-report]. An underestimated load letter can land a grow on D3 or GS initially, requiring a class change when lights energize.

What full service costs while you wait

Utility full service is not a penalty rate. It is the regulated tariff for your class. A Warren cultivator on D4 pays the same tariff as any industrial customer on D4 [dte-rate-book]. The optimization task is rate schedule and voltage, not waiting for a special cannabis rider. Consumers GSD customers likewise pay the published GSD sheet charges [consumers-large-business-rates].

AES contract terms that matter on choice

When an allotment opens, read capacity assignment, swing volume, and renewal language carefully. MISO Zone 7 seasonal capacity markets behave differently from PJM's prior annual construct [mpsc-choice-2025-report]. A fixed energy price with floating capacity pass-through can beat a fully bundled quote in low-capacity years and lose in high-capacity years.

Coordination with construction energization

Cannabis buildouts often energize in phases: veg rooms first, flower later. Each phase shift can reset peak demand and trigger class reviews. Schedule utility witness tests so the meter sees realistic simultaneous load before the utility finalizes class placement [dte-rate-book].

Legal review of queue acceptance letters

When five business days arrive to accept an allotment under MCL 460.10a [mcl-460-10a], corporate counsel should review acceptance language alongside energy counsel. Missing the window sends the account to the back of the queue while load remains on full service [consumers-electric-choice].

MPSC complaint path

If a utility misplaces queue enrollment, file with the MPSC using Case No. U-15801 cap procedures [mpsc-cap-data]. Keep certified mail receipts from original queue submission.

Facilities converting from medical-only to adult-use licensing do not automatically change queue position [cra-au-licensing-reports-2026]. Verify the account holder name still matches after corporate reorganizations common in Michigan roll-ups [mcl-460-10a]. Submit name-change paperwork to the utility and MPSC cap administrator together to avoid a gap in queue standing [mpsc-cap-data]. Keep copies for both DTE and Consumers if the MSO reorganizes mid-queue [dte-electric-choice].

Step-by-step queue enrollment detail

At new service application, request electric customer choice queue enrollment in writing [mcl-460-10a]. Keep certified mail receipt and utility confirmation number [consumers-electric-choice]. Utilities file rank-ordered lists each January 15 [mcl-460-10a]. When allotments open, the next customers have five business days to accept [mcl-460-10a]. Missing the window sends you to the back of the queue [consumers-electric-choice].

Primary voltage while waiting

Because DTE D11 primary service can cut distribution demand charges versus D4 secondary [dte-rate-book], tariff optimization may save more than an AES contract would even if an allotment opened tomorrow [dte-rate-book]. Engage a utility-qualified engineer during design, not after energization at secondary voltage [dte-rate-book].

MISO Zone 7 capacity on choice

When an allotment opens, arrange MISO Zone 7 capacity or take utility capacity service [mpsc-choice-2025-report]. Seasonal capacity auctions change AES pricing [mpsc-choice-2025-report]. Read pass-through language on every AES proposal [mpsc-choice-2025-report].

Five-business-day acceptance window

When allotments open, the next customers in line have five business days to accept under MCL 460.10a [mcl-460-10a]. Legal and energy teams should pre-approve acceptance templates [mcl-460-10a]. Missing the window returns the account to the queue bottom [consumers-electric-choice].

DTE two-year initial choice term

DTE choice customers face two-year initial term before flexible return [dte-electric-choice]. Do not accept allotment lightly without modeling return penalties [dte-electric-choice]. Primary voltage optimization on full service may beat choice savings even when allotment is available [dte-rate-book].

Full service optimization checklist

While queued: evaluate D11 vs D4, GPD vs GSD, reserve AG rebates, export interval data, model demand response where available, track MPSC rate cases [dte-rate-book] [consumers-large-business-rates] [dte-ee-catalog-2026]. When allotment opens: confirm capacity path, review DTE two-year term, accept within five business days [mcl-460-10a] [dte-electric-choice].

Realistic switching timeline

Expect full service for years after application [mpsc-choice-2025-report]. Queue enrollment day one [mcl-460-10a]. Five business days to accept allotment [mcl-460-10a]. Sixty days to replace lost AES [mcl-460-10a].

Optimize tariff while waiting: D11, GPD, rebates [dte-rate-book] [dte-ee-catalog-2026]. DTE December 1 return notice [dte-electric-choice]. MISO capacity on choice [mpsc-choice-2025-report]. Legal pre-approve acceptance templates [mcl-460-10a].

Pre-approve legal acceptance of allotment during cap window [mcl-460-10a] [consumers-electric-choice].

Compliance and documentation practices

Maintain a utility folder with the current tariff PDF, last twelve months of bills, interval exports, queue confirmation letters where applicable, CRES contracts, and witness test reports [mpsc-choice-2025-report]. Update the folder after every rate case order and every June benchmark reset [mcl-460-10a]. Facility managers should reconcile billing demand to interval peaks monthly and escalate discrepancies to the utility account manager before paying disputed invoices [consumers-electric-choice]. Corporate finance should map utility COGS to cultivation, processing, or retail cost centers consistently across sites so board reporting reflects operational reality rather than blended averages [dte-electric-choice]. Legal should keep meter assignment language in leases aligned with the license holder entity on the utility account [mpsc-cap-data].

Pre-approve legal acceptance of allotment during cap window [mcl-460-10a] [consumers-electric-choice].

Compliance and documentation practices

Maintain a utility folder with the current tariff PDF, last twelve months of bills, interval exports, queue confirmation letters where applicable, CRES contracts, and witness test reports [mpsc-choice-2025-report]. Update the folder after every rate case order and every June benchmark reset [mcl-460-10a]. Facility managers should reconcile billing demand to interval peaks monthly and escalate discrepancies to the utility account manager before paying disputed invoices [consumers-electric-choice]. Corporate finance should map utility COGS to cultivation, processing, or retail cost centers consistently across sites [dte-electric-choice]. Legal should keep meter assignment language in leases aligned with the license holder entity on the utility account [mpsc-cap-data].

Quarterly review cadence

Maintain a utility folder with the current tariff PDF, last twelve months of bills, interval exports, queue confirmation letters where applicable, CRES contracts, and witness test reports [mpsc-choice-2025-report]. Update the folder after every rate case order and every June benchmark reset [mcl-460-10a]. Facility managers should reconcile billing demand to interval peaks monthly and escalate discrepancies to the utility account manager before paying disputed invoices [consumers-electric-choice]. Corporate finance should map utility COGS to cultivation, processing, or retail cost centers consistently across sites [dte-electric-choice]. Legal should keep meter assignment language in leases aligned with the license holder entity on the utility account [mpsc-cap-data].

Related reading

• Michigan hub: market overview
• Commercial electricity rates: demand structure
• Which states allow supplier choice FAQ