Maine Multi-Site Cannabis Operator Energy: CMP vs. Versant, NMISA Pricing, and Portfolio Procurement

Why Maine portfolios split across two grids

Maine is not one uniform electricity market. Central Maine Power covers southern, central, and western Maine including Portland, Lewiston-Auburn, and Augusta inside ISO New England [mpuc-standard-offer-rates]. Versant Power serves eastern Maine through the Bangor Hydro District (also ISO-NE) and northern Maine through the Maine Public District in Aroostook County, which is administered by NMISA instead of ISO New England [mpuc-mpd-large].

A multi-site operator with a Portland dispensary, an Augusta processing lab, and a Bangor cultivation facility may have three accounts on two utilities in two grid administrations. Standard offer prices, supplier availability, and delivery tariffs differ by territory [mpuc-standard-offer-rates].

OCP licensing data updated September 9, 2026 counted 76 cultivation facilities, 80 manufacturing facilities, and 187 retail stores statewide [ocp-adult-use-licensee-search]. Consolidation is pushing operators toward multi-license portfolios, but the utility map does not simplify with scale.

Portfolio load profiles by license type

Site type	Typical utility class	Peak demand range	Supply tier
Dispensary (retail)	CMP Small GS under 20 kW	15 to 25 kW	Medium non-residential standard offer or CEP
Cultivation (Tier 2-3)	CMP MGS or IGS	100 to 400 kW	Large non-residential (indexed) or CEP
Processing lab	CMP MGS	50 to 200 kW	Medium or large class depending on chillers
Northern Maine facility	Versant MPD Rate E-P	50 kW minimum billing demand	MPD large-class indexed supply [mpuc-mpd-large]

Delivery class placement follows peak demand thresholds on each utility's tariff [cmp-mgs-tariff]. A portfolio CFO needs one spreadsheet with account number, utility, delivery class, standard-offer tier, contract end date, and monthly kWh and kW for every site.

Standard offer exposure across the portfolio

Maine's large non-residential standard offer resets monthly on wholesale index prices [mpuc-cmp-large]. CMP large-class energy ran from 7.23 cents per kWh in May 2026 to 18.23 cents in January, plus a capacity charge of about $3.34 to $3.42 per kW [mpuc-cmp-large]. Maine Public District large-class energy ran from 13.82 to 23.53 cents per kWh in the same period [mpuc-mpd-large].

Assume a portfolio with three sites:

• Portland cultivation: 250 kW peak, 180,000 kWh/month on CMP large class
• Augusta processing: 80 kW peak, 55,000 kWh/month on CMP medium class
• Portland dispensary: 19 kW peak, 6,500 kWh/month on CMP small class

January supply cost on standard offer (large class at 18.23 cents, medium at 19.52 cents):

Site	kWh	Supply rate	Monthly supply
Cultivation	180,000	18.23 cents + capacity	~$36,000
Processing	55,000	19.52 cents	~$10,736
Dispensary	6,500	19.52 cents	~$1,269

May supply cost on the same standard offer tiers (large at 7.23 cents, medium at 8.76 cents) drops cultivation supply to about $13,000 and processing to about $4,818. That swing is why portfolio managers stagger fixed CEP contracts so no more than one-third of load rolls off in any quarter.

Procurement calendar for a Maine MSO

Retail choice has been available since March 1, 2000 [me-35a-3202]. Practical steps:

1. Centralize interval data. Pull twelve months of bills for every account. Separate delivery from supply on each.
2. Map contract end dates. Flag accounts within 90 days of CEP contract expiration.
3. Price by territory. Request offers separately for CMP, Versant BHD, and Versant MPD accounts. NMISA accounts may have fewer CEP options.
4. Match term to load. Fixed 12- or 24-month contracts hedge winter exposure on cultivation and processing loads. Shorter terms or block-and-index structures may suit dispensaries with lower volume.
5. Track the PUC bid cycle. Standard offer prices for medium class reset annually through competitive bids (Docket 2025-00157 for 2026) [mpuc-standard-offer-rates]. Use the winning bid as a benchmark, not a ceiling.

Maine commercial power averaged 22.24 cents per kWh in June 2026 against a U.S. average of 14.19 cents [eia-epm-5-6-a]. Portfolio savings come from beating standard offer on supply, not from delivery, which stays with the utility regardless of supplier.

NMISA accounts need separate treatment

Any facility in Aroostook County on Versant's Maine Public District faces materially higher standard offer prices and a different supplier pool [mpuc-mpd-large]. Rate E-P bills a combined distribution and transmission demand charge of $21.14 per kW with a 50 kW minimum billing demand floor [versant-mpd-tariffs]. A portfolio manager should not assume a CEP that serves Portland accounts can match MPD pricing or terms.

CMP and Versant in one portfolio

Most Maine MSOs sit entirely on CMP in southern and central counties [cmp-mgs-tariff]. Down East and Aroostook sites on Versant MPD face NMISA pricing and higher indexed standard offer [mpuc-mpd-large]. Do not aggregate MPD and CMP accounts into one CEP price without supplier confirmation [mpuc-mpd-large].

Medical and adult-use meter governance

Caregiver cultivation may not share billing data systems with adult-use subsidiaries [ocp-medical-use]. Corporate procurement should tag meters by regulatory program before RFP [ocp-adult-use-licensee-search]. Standard offer class per account drives hedge strategy [mpuc-standard-offer-rates].

Efficiency Maine across sites

Custom incentives up to fifty percent of project cost apply site by site [efficiency-maine-at-work]. Portfolio LED retrofits need separate engineering packages per facility [efficiency-maine-at-work]. Supply contracts and rebate reservations follow independent timelines [efficiency-maine-at-work].

Portfolio standard offer class map

Tag each account as CMP small, medium, or large standard offer class before corporate RFP [mpuc-standard-offer-rates]. Versant MPD accounts use separate indexed tables [mpuc-mpd-large]. Do not blend MPD and CMP into one index product without supplier written confirmation [mpuc-mpd-large].

Efficiency Maine across multiple grows

Custom incentives require per-site engineering packages [efficiency-maine-at-work]. Portfolio LED schedules should not assume one rebate reservation covers all locations [efficiency-maine-at-work].

Additional procurement and tariff notes

Portfolio maps must tag CMP versus Versant MPD before corporate RFP [mpuc-mpd-large]. MPD indexed large-class prices exceed CMP in 2026 [mpuc-mpd-large].

Additional load and utility notes

Efficiency Maine custom incentives require per-site engineering [efficiency-maine-at-work]. Do not assume one rebate reservation covers all locations [efficiency-maine-at-work].

Additional load and utility notes

Medical and adult-use subsidiaries need separate meter governance [ocp-medical-use] [ocp-adult-use-licensee-search].

Down East versus southern portfolio split

Tag Versant Bangor Hydro versus CMP accounts separately in the master spreadsheet [cmp-mgs-tariff]. MPD standard offer requires different supplier pool [mpuc-mpd-large]. Efficiency Maine reservations are per site, not portfolio-wide [efficiency-maine-at-work].

NMISA versus ISO-NE portfolio split

Southern CMP accounts use ISO New England pricing; Versant MPD uses NMISA with higher 2026 indexed standard offer [mpuc-mpd-large]. Do not aggregate MPD and CMP into one index product without supplier confirmation [mpuc-mpd-large]. Efficiency Maine custom incentives are per facility [efficiency-maine-at-work].

Supplemental tariff and procurement detail

Tag Versant MPD versus CMP on portfolio map before corporate RFP [mpuc-mpd-large]. Medical caregiver meters need separate governance from adult-use subsidiaries [ocp-medical-use].

Portfolio NMISA split

Versant MPD and CMP require separate supplier pools and indexed tables [mpuc-mpd-large]. Efficiency Maine reservations are per site [efficiency-maine-at-work].

Down East versus southern tags

Tag Versant Bangor Hydro versus CMP southern accounts on the portfolio map [cmp-mgs-tariff]. Efficiency Maine custom packages are per facility [efficiency-maine-at-work].

CMP standard offer class tags

Tag each account small, medium, or large standard offer class in the master spreadsheet [mpuc-standard-offer-rates].

Portfolio tagging for CMP and Versant

Tag each account as CMP small, medium, or large standard offer class in the master spreadsheet before requesting portfolio supplier quotes [mpuc-standard-offer-rates]. Versant Bangor Hydro accounts use MPD indexed tables that differ from CMP southern pricing [mpuc-mpd-large]. Efficiency Maine custom packages are per facility, so a chain with stores in Portland and Presque Isle should file separate applications rather than assuming one rebate covers all meters [efficiency-maine-at-work]. Re-bid CEP contracts in Q4 before January indexed large-class spikes repeat 2026 levels [mpuc-cmp-large].

Where to go next

• Maine hub for regulatory overview.
• Commercial electricity rates for class tables.
• How to switch suppliers for enrollment mechanics.
• Multi-state operator procurement strategy for cross-state portfolio management.

Data standardization across CMP and Versant accounts

Portfolio managers should normalize interval data to a single format: account number, utility, delivery class, standard-offer tier, monthly kWh, monthly peak kW, supply rate, and contract end date [mpuc-standard-offer-rates]. Versant MPD accounts need a separate column for NMISA standard offer prices because they do not track CMP index values [mpuc-mpd-large].

Export twelve months of Green Button or utility portal data for each meter before requesting CEP quotes. Suppliers price on load factor and peak kW; a portfolio spreadsheet without peak demand understates delivery cost.

Medical caregiver load outside the portfolio

Maine's medical program runs caregivers and dispensaries without mandatory testing or statewide tracking [ocp-medical-use]. Caregiver cultivation load does not appear in the adult-use license counts but still draws power on CMP and Versant wires [ocp-medical-use]. MSOs acquiring caregiver operations should add those meters to the portfolio map even though they sit outside OCP adult-use reporting.

Efficiency Maine at portfolio scale

Efficiency Maine custom program awards run roughly $10,000 to $1 million per year covering up to 50% of project cost [efficiency-maine-at-work]. A portfolio LED retrofit across three cultivation sites qualifies as separate custom applications per site but can share engineering analysis if submitted through one Qualified Partner [efficiency-maine-at-work].

Confirm current standard offer prices and CEP licensing on the MPUC site before signing.