How to Switch Electricity Suppliers in Maine: A Step-by-Step Guide for Cannabis Businesses
Any customer of Central Maine Power or Versant Power may buy generation from a Competitive Electricity Provider licensed by the Maine PUC. The CEP submits enrollment to the utility, the switch takes effect on the next meter read, and delivery charges stay the same. The steps below follow Maine's three standard-offer classes, the annual PUC bid cycle, and the monthly index reset for large non-residential accounts.
Who can switch in Maine
Maine restructured its electric industry under 35-A MRSA chapter 32, with retail access from March 1, 2000 [me-35a-3202]. Every customer class on Central Maine Power and Versant Power may buy generation from a Competitive Electricity Provider licensed by the Maine PUC [mpuc-electricity]. Transmission and distribution utilities deliver power but do not sell generation [me-35a-3212].
Eligible classes include residential, medium non-residential, and large non-residential accounts in CMP and Versant territories [mpuc-standard-offer-rates]. Consumer-owned utilities are outside the CEP framework [mpuc-electricity].
Cannabis businesses on CMP or Versant wires qualify the same as any commercial customer. License type does not affect eligibility.
Step 1: Confirm eligibility on CMP or Versant wires
Check the bill header. If the delivery utility is Central Maine Power or Versant Power, the account can shop. If the utility is a consumer-owned municipal or cooperative system, retail choice does not apply under Maine law [me-35a-3202].
Versant serves two districts with separate tariffs: Bangor Hydro District (ISO New England) and Maine Public District in Aroostook County (NMISA) [mpuc-standard-offer-rates]. Confirm which district before requesting CEP quotes.
Step 2: Identify your standard-offer class
The PUC procures Standard Offer Service in three classes [me-35a-3212] [mpuc-standard-offer-rates]:
| Class | Price mechanism | 2026 CMP example |
|---|---|---|
| Small | Fixed monthly from annual bid | Varies by month [mpuc-standard-offer-rates] |
| Medium non-residential | Fixed monthly from annual bid | 8.76 cents/kWh (May) to 19.52 cents/kWh (January) [mpuc-cmp-medium] |
| Large non-residential | Indexed to wholesale, reset monthly | 7.23 cents/kWh (May) to 18.23 cents/kWh (January) plus ~$3.34-$3.42/kW capacity [mpuc-cmp-large] |
Your bill or the MPUC standard offer page shows which class applies. A cultivation facility above the large-class threshold on indexed standard offer carries the most winter exposure.
Step 3: Pull twelve months of bills
Gather every bill for the account. You need:
- Monthly kWh usage
- Peak kW demand (15-minute interval maximum)
- Delivery class name (Small GS, MGS, IGS, LGS on CMP)
- Supply line item and rate
- Contract end date if already on a CEP
Separate delivery from supply. Delivery stays with CMP or Versant regardless of supplier. Only the supply line changes when you switch.
Step 4: Find licensed CEPs and compare offers
The MPUC maintains the licensed CEP list at maine.gov/mpuc/regulated-utilities/electricity [mpuc-electricity]. Request quotes that specify:
- Fixed price per kWh for the contract term
- Whether ISO-NE capacity is included or passed through
- Contract length and auto-renewal terms
- Early termination fee
Compare each offer against your standard-offer tier benchmark for the enrollment month [mpuc-standard-offer-rates]. A fixed 12-month contract at 10 cents per kWh beats January medium-class standard offer at 19.52 cents [mpuc-cmp-medium].
Step 5: Review contract fine print
Read before signing:
- Auto-renewal. Many CEP contracts renew at a variable rate unless you opt out within a notice window.
- Early termination fee. Fixed contracts often carry a fee for exit before term end.
- Capacity pass-through. Large-class standard offer includes a monthly capacity charge [mpuc-cmp-large]. Confirm whether your CEP quote includes or excludes capacity.
- Consolidated vs. dual billing. Some CEPs bill supply on the utility bill; others send a separate invoice.
Step 6: Submit enrollment through the CEP
The CEP submits the switch to CMP or Versant. Provide account number, service address, legal entity name, and authorized signatory. The utility processes enrollment for the next meter read. No MPUC approval is required for the switch itself [me-35a-3202].
Step 7: Verify on the first bill after switch
The first post-switch bill should show the CEP name on the supply line. Delivery charges remain unchanged. Compare the billed supply rate to your contract. Discrepancies go to the CEP first, then the MPUC consumer assistance division [mpuc-electricity].
Step 8: Plan for contract end
Mark the contract end date on a procurement calendar. At expiration, the account returns to Standard Offer Service at the then-current PUC price unless you renew or sign with a new CEP [me-35a-3212]. Stagger contract end dates across a multi-site portfolio so no more than one-third of load rolls off in any quarter.
Common mistakes Maine operators make
Staying on large-class standard offer through winter. The indexed large-class price more than doubled from May to January 2026 on CMP [mpuc-cmp-large]. A facility that never signs a fixed CEP contract pays the full spike.
Assuming one CEP quote covers Versant MPD. Northern Maine has a separate supplier pool and higher standard offer prices [mpuc-mpd-large]. Confirm territorial coverage before enrolling an Aroostook County account.
Ignoring delivery class growth. A dispensary that adds processing equipment can cross from Small GS to MGS and pick up per-kW demand charges. Review load growth against class thresholds before signing a long supply contract.
What stays on the utility bill after you switch
Switching changes only the generation supply line. CMP or Versant continues billing [mpuc-electricity]:
- Customer charge by delivery class
- Distribution energy and demand charges
- Transmission energy and demand charges
- Stranded cost and public policy surcharges where applicable
The CEP bills supply either on the same consolidated bill or on a separate invoice depending on the contract. Either way, outage response, meter service, and line maintenance stay with the utility [me-35a-3202].
Timing the switch to your contract start date
Enrollment aligns to the next meter read after the CEP submits the request [mpuc-electricity]. For a monthly-read account, plan enrollment at least two weeks before your desired contract start if you are escaping an indexed large-class standard offer month.
If your current CEP contract has an early termination fee, compare the fee to projected winter standard offer savings before switching mid-term [mpuc-cmp-large]. Sometimes paying the ETF beats riding indexed standard offer from October through March.
Three standard offer classes on one RFP
The MPUC sets standard offer in residential/small, medium non-residential, and large non-residential classes [mpuc-standard-offer-rates]. A portfolio with a large cultivator and small dispensaries needs separate CEP quotes per class even under one legal entity [me-35a-3212]. Versant MPD accounts use different indexed prices than CMP [mpuc-mpd-large].
January shopping window discipline
Maine PUC awards standard offer annually; large-class accounts reset monthly [mpuc-cmp-large]. Re-bid CEP contracts in late fall before winter indexed spikes [mpuc-cmp-large]. Document whether the CEP contract includes capacity as fixed or pass-through [mpuc-electricity].
Consumer-owned utility exclusion
Consumer-owned utilities are outside the CEP framework [me-35a-3202]. Confirm CMP or Versant territory before lease signing [mpuc-electricity]. Municipal and cooperative customers cannot use this switching guide [mpuc-electricity].
CEP licensing under 35-A MRSA 3202
Competitive Electricity Providers are licensed by the Maine PUC [me-35a-3202]. Standard offer service is selected through annual competitive bids under 35-A MRSA 3212 [me-35a-3212]. Verify CEP license status before sharing interval data [mpuc-electricity].
Large-class monthly index review
Large non-residential standard offer resets monthly on wholesale index [mpuc-cmp-large]. Facilities approaching 400 kW should model class crossover before batch equipment energizes [cmp-mgs-tariff] [mpuc-cmp-large].
Additional procurement and tariff notes
MPUC Docket 2025-00157 set 2026 standard offer awards [mpuc-standard-offer-rates]. Medium class fixed monthly; large class monthly index plus capacity [mpuc-cmp-large].
Additional load and utility notes
CEP license verification is required before sharing interval data [me-35a-3202]. Consumer-owned utilities cannot use this guide [mpuc-electricity].
Additional load and utility notes
Approaching 400 kW measured demand triggers intermediate general service review at CMP [cmp-mgs-tariff]. Model batch equipment energization against class thresholds [cmp-mgs-tariff].
Documentation pack for CEP RFP
Include twelve months bills, rate schedule code, interval CSV if available, and legal entity match to OCP license [ocp-adult-use-licensee-search]. Require identical pass-through assumptions in every bid [mpuc-electricity]. Calendar January standard offer index review for large class [mpuc-cmp-large].
Class verification before CEP signature
Confirm CMP rate schedule code on the bill header before signing [cmp-mgs-tariff]. Medium versus large standard offer class changes winter exposure [mpuc-cmp-large]. Versant MPD accounts use different indexed tables [mpuc-mpd-large]. Consumer-owned utilities cannot switch [me-35a-3202].
Supplemental tariff and procurement detail
Require identical ISO-NE capacity pass-through language in every CEP bid [mpuc-electricity]. Archive January and May standard offer snapshots when comparing fixed contracts [mpuc-cmp-medium] [mpuc-cmp-large].
CEP bid documentation
Include MPUC standard offer class, rate schedule code, and OCP license entity match in every CEP RFP [ocp-adult-use-licensee-search] [mpuc-electricity]. Calendar January large-class index review [mpuc-cmp-large].
Large class crossover check
Facilities approaching 400 kW should model intermediate general service crossover before batch equipment energizes [cmp-mgs-tariff]. Versant MPD indexed tables differ from CMP [mpuc-mpd-large].
Interval CSV for CEP bids
Attach interval CSV when available so suppliers price load shape accurately [mpuc-electricity].
CEP enrollment timing for new meters
Competitive electricity provider contracts attach on the next meter read after enrollment clears [mpuc-electricity]. Facilities crossing from medium to large standard offer class during buildout should enroll before the utility reclassifies the account, because supplier quotes reference the tariff class on the enrollment date [mpuc-standard-offer-rates]. Attach twelve months of interval CSV when available so suppliers price batch load shape instead of assuming flat commercial load [mpuc-electricity]. Consumer-owned utilities outside CMP and Versant territories cannot shop supply; verify territory on the account number prefix before signing a CEP contract [me-35a-3202].
Where to go next
- Maine commercial electricity rates for utility class tables.
- Maine hub for market overview.
- What is energy deregulation for background.
- Contract terms and early termination fees for fine-print review.
Confirm current CEP licensing and standard offer prices on the MPUC site before signing.
Frequently asked questions
How long does switching take in Maine?
The switch takes effect on the next scheduled meter read after the CEP submits enrollment to CMP or Versant. For a monthly-read account, that is typically two to four weeks. There is no service interruption.
What happens to my utility when I switch?
CMP or Versant continues delivering power, maintaining lines, and billing delivery charges. Only the generation supply line changes to your chosen CEP. Outages and service calls still go to the utility.
Can I switch back to standard offer?
Yes. When your CEP contract ends, the account returns to Standard Offer Service unless you sign a new CEP contract or the existing contract auto-renews. You can also request a switch back to standard offer mid-contract if your CEP contract allows it without a penalty.
Does northern Maine work the same way?
Versant's Maine Public District in Aroostook County has its own standard offer prices and supplier pool under NMISA administration. CEP availability and pricing differ from CMP territory. Confirm the CEP serves MPD accounts before enrolling.
What is the benchmark rate to compare against?
Standard Offer Service is the default benchmark. For medium non-residential accounts, compare against the fixed monthly price from the PUC's annual bid. For large non-residential accounts, compare against the current month's indexed energy price plus capacity charge.
Do I need MPUC approval to switch?
No. Retail access has been available since March 1, 2000 under 35-A MRSA 3202. The CEP must hold a Maine PUC license. The customer chooses and enrolls; no regulatory approval is required for the switch itself.
Related reading
- Maine Cannabis Energy: Electricity Choice, Rates, and CMP vs. Versant for Licensed Operators
Maine cannabis power: OCP adult-use and medical programs, CMP/Versant retail choice, ISO-NE vs. NMISA pricing, rates 57% above U.S. average.
- Maine Commercial Electricity Rates for Cannabis Facilities: CMP Classes, Standard Offer Tiers, and ISO-NE Context
Maine commercial power at 22.24 cents/kWh vs. the U.S. average, CMP and Versant delivery classes, standard offer tiers, and NMISA northern pricing.
- What Is Energy Deregulation? How Electricity Choice Works for Commercial Customers
How deregulation splits supply from delivery, who gets to choose a supplier, what the utility still does, and where cannabis businesses can shop in 17 markets.
- Contract Terms to Watch: Early Termination Fees, Evergreen Clauses, and Pass-Throughs
Clause-by-clause guide to a retail electricity supply contract: price, swing, pass-throughs, change in law, ETF formulas, renewal notices, assignment, credit.
- Understanding Your Commercial Utility Bill (Line-Item Breakdown)
Supply vs delivery, customer charge, distribution demand, transmission, capacity, riders, power factor, and taxes, with an annotated sample bill for a grow.
- Supplier Contract Comparison Worksheet
Line up two or three competitive electricity supply offers with pass-through, bandwidth, and early-termination fields side by side against your current rate.
- How Long Does Switching Electricity Suppliers Take?
How long supplier switches take: PA's 3-day rule, CT meter-read timing, Texas ERCOT, rescission windows, and mid-contract moves for commercial accounts.
- What Happens to My Utility When I Switch Suppliers?
After you switch suppliers the utility still delivers power and fixes outages. One bill vs two, delivery demand, price to compare, and net metering.
- Can Cannabis Businesses Choose Their Electricity Supplier?
Whether grows and dispensaries can shop for electricity supply in deregulated states, what suppliers may ask, and what stays with the utility after you switch.
Jason Taken founded Jaken Energy, the commercial energy procurement practice behind this site. He works with licensed cannabis operators in deregulated electricity markets to lower supply rates, manage demand charges, and evaluate efficiency upgrades.
Sources
Inline citations in this article, such as [me-35a-3202], refer to the entries below. Links open the primary source in a new tab.
- [me-35a-3202]35-A MRSA 3202. Deregulation of generation; retail access from March 1, 2000 — Maine Legislature, Office of the Revisor of Statutes. Accessed 2026-09-11.
- [me-35a-3212]35-A MRSA 3212. Standard-offer service — Maine Legislature, Office of the Revisor of Statutes. Accessed 2026-09-11.
- [mpuc-electricity]Electricity: choosing a supplier, competitive electricity providers, standard offer — Maine Public Utilities Commission. Accessed 2026-09-11.
- [mpuc-standard-offer-rates]Standard Offer Supply Rates (CMP, Versant Bangor Hydro District, Versant Maine Public District; small, medium, large classes) — Maine Public Utilities Commission. Accessed 2026-09-11.
- [mpuc-cmp-medium]Standard Offer Rates for Central Maine Power - Medium Non-Residential Class, 2026 (Docket 2025-00157) — Maine Public Utilities Commission. Accessed 2026-09-11.
- [mpuc-cmp-large]Standard Offer Rates for Central Maine Power - Large Non-Residential Class, 2026 (Docket 2025-00157) — Maine Public Utilities Commission. Accessed 2026-09-11.
- [mpuc-mpd-large]Standard Offer Rates for Versant Power - Maine Public District - Large Non-Residential Class, 2026 (Docket 2025-00157) — Maine Public Utilities Commission. Accessed 2026-09-11.