Massachusetts Cannabis Dispensary Energy: Small Commercial Classes and Basic Service on Eversource G-1

Retail load on Massachusetts IOU territory

Massachusetts reported 782 operating cannabis businesses of all types as of August 2026, including retailers across Eversource Eastern Massachusetts, National Grid central Massachusetts, and smaller Unitil pockets [ma-ccc-10b-sales-2026]. Adult-use sales began November 20, 2018, and the 2026 modernizing act raised the per-licensee retail cap from three to six locations [ma-ccc-10b-sales-2026]. Each new storefront is a separate commercial account unless the operator negotiates a master-meter structure, which is uncommon in retail buildouts.

The eligibility question for supply choice is the utility, not the license type. Eversource, National Grid, and Unitil customers may buy generation from a DPU-licensed competitive supplier [ma-dpu-basic-service]. Municipal light plant customers in about 40 towns do not have supplier choice [ma-dpu-basic-service]. Put the account in the licensee's name before shopping; a landlord's master meter blocks switching.

What a dispensary actually draws

Retail cannabis load stacks differently from a grow. Sales floor and display lighting run on long schedules. HVAC fights door traffic and solar gain on glass storefronts. Security cameras, access control, and vault lighting stay on 24/7. Refrigeration for edibles and pre-roll storage adds a steady base. Massachusetts averages 516 cooling degree days and 6,132 heating degree days statewide [noaa-cag-massachusetts], so you heat aggressively from October through April and dehumidify during humid summer afternoons when dew points reach the mid-60s to low 70s F [noaa-cag-massachusetts].

Peak kW at a dispensary is usually an HVAC or kitchen event, not a lighting block. That keeps many stores on small general service without the heavy demand charges that punish a cultivation facility. If you add fast chargers, commercial kitchen equipment, or co-located processing, re-read the class assignment rules before the next rate change.

Eversource G-1 vs National Grid G-1

Utility	Class	Threshold	Demand billing
Eversource Eastern MA	G-1 Small General Service	Average demand not exceeding 100 kW over 12 months	Optional demand price: $22.31/kW distribution and $19.34/kW transmission above 10 kW, or all-kWh non-demand option [eversource-ema-rates-2026]
National Grid MA	G-1 Small General Service	Below 10,000 kWh per month or 200 kW demand	No demand charge [national-grid-ma-rates]

Source: utility rate summaries [eversource-ema-rates-2026] [national-grid-ma-rates]. Eversource assigns class using the average of 12 consecutive months of demand [eversource-ema-rates-2026]. A store that spikes once near 100 kW average on Eversource can graduate to G-2 Medium General Service with $20.21/kW distribution and $13.74/kW transmission demand [eversource-ema-rates-2026].

Supply choice and Basic Service

Customers who do not choose a supplier receive Basic Service procured at cost with no markup [ma-dpu-basic-service]. Residential and small commercial Basic Service defaults to a six-month fixed price [ma-dpu-basic-service]. That fixed reset is the benchmark most dispensaries should compare supplier quotes against.

Basic Service includes only minimum Renewable Portfolio Standard content. The Renewable Energy Charge, Energy Efficiency Charge, Distributed Solar Charge, and Net Metering Recovery Surcharge are delivery-side riders that apply whether or not you switch supplier [ma-dpu-basic-service]. Switching replaces the supply line, not delivery.

Worked example for a Boston-area store

Assume a 3,500 square foot dispensary in Eversource Eastern Massachusetts on G-1 non-demand service:

Input	Value
Annual kWh	95,000 (assumed)
Average commercial rate, June 2026	24.52 cents/kWh [eia-epm-5-6-a]
Supply share of bill	Assume 45 percent on Basic Service (assumed split)

Energy cost math:

• 95,000 kWh × $0.2452/kWh = $23,294 all-in if the EIA average matches your blended rate [eia-epm-5-6-a]
• If supply is 45 percent: 95,000 × $0.2452 × 0.45 = $10,483 on supply alone (assumed)
• A fixed supplier offer at 11.5 cents/kWh on the same kWh: 95,000 × $0.115 = $10,925 supply (assumed comparison price)

The example shows why you need actual bills: delivery riders and the Basic Service reset date move the breakeven. A six-month fixed supplier contract can hedge the next Basic Service procurement if winter ISO-NE prices spike.

Efficiency and demand response

Mass Save offers prescriptive lighting and controls, HVAC, custom incentives, and ConnectedSolutions demand response for C and I customers [masssave-business-rebates]. LED retrofit with required controls is often the fastest payback on a sales floor. ConnectedSolutions pays for curtailment during summer peak events [masssave-business-rebates], which matters less for a store than a grow but still offsets supply cost if you have battery backup or flexible HVAC.

Multi-store operators

Operators approaching the six-store cap should read the multi-site page. Even two stores on different utilities need separate supplier enrollments and aligned contract end dates. Standardize interval data export before the portfolio grows past three accounts.

2026 retail cap and new store pipeline

The modernizing act raised the per-licensee retail cap from three to six stores [ma-ccc-modernizing-act-2026]. Each additional storefront is a new G-1 account in Eastern or Western Eversource or National Grid territory [eversource-ema-rates-2026]. Enroll supply at energization so the first months are not on Basic Service winter spikes without a deliberate choice [ma-dpu-basic-service].

MLP towns in the Boston metro

Municipal light plant towns in the inner suburbs include Belmont, Concord, Hudson, and Wellesley among roughly forty MLP communities [ma-dpu-basic-service]. A dispensary lease in an MLP town has no supplier market [ma-dpu-basic-service]. Verify territory with the utility before signing [ma-dpu-basic-service].

2026 retail cap and new storefront pipeline

The modernizing act raised the per-licensee retail cap from three to six stores [ma-ccc-modernizing-act-2026]. Each additional storefront is a new G-1 account in Eastern or Western Eversource or National Grid territory [eversource-ema-rates-2026]. Enroll supply at energization so the first months are not on Basic Service winter spikes without a deliberate choice [ma-dpu-basic-service].

Municipal light plant towns in the Boston metro

Municipal light plant towns in the inner suburbs include Belmont, Concord, Hudson, and Wellesley among roughly forty MLP communities [ma-dpu-basic-service]. A dispensary lease in an MLP town has no supplier market [ma-dpu-basic-service]. Verify territory with the utility before signing [ma-dpu-basic-service].

Basic Service six-month fixed for small C and I

Residential and small C and I customers default to a six-month fixed Basic Service price [ma-dpu-basic-service]. Most dispensaries qualify as small C and I unless co-located with processing that raises demand [ma-dpu-basic-service]. Compare fixed supplier offers against the posted Basic Service price at enrollment [ma-dpu-basic-service].

Basic Service six-month hedge for small stores

Residential and small C and I customers receive six-month fixed Basic Service by default [ma-dpu-basic-service]. Compare supplier fixed offers at store opening against the posted Basic Service price [ma-dpu-basic-service]. Security, refrigeration, and HVAC overnight add off-peak kWh [masssave-business-rebates].

Gateway city lease versus Boston rent

National Grid gateway cities may offer lower rent than Boston Eversource territory with different G-2 demand math [national-grid-ma-rates] [eversource-ema-rates-2026]. Model total occupancy cost including demand before signing [national-grid-ma-rates].

Additional procurement and tariff notes

Per-licensee retail cap rose from three to six stores under H.4206 [ma-ccc-modernizing-act-2026]. Each new G-1 account needs supply enrollment at energization [ma-dpu-basic-service].

Additional load and utility notes

MLP towns including Belmont and Wellesley exclude competitive supply [ma-dpu-basic-service]. Boston Eversource and Worcester National Grid stores need separate benchmarks [eversource-ema-rates-2026] [national-grid-ma-rates].

Additional load and utility notes

Mass Save ConnectedSolutions pays curtailment during ISO-NE peaks [masssave-business-rebates]. Retail stores with batteries may qualify [masssave-business-rebates].

Per-licensee six-store cap planning

H.4206 allows up to six stores per licensee [ma-ccc-modernizing-act-2026]. Each opening is a new supply enrollment on G-1 [ma-dpu-basic-service]. Compare Worcester National Grid total occupancy cost to Boston Eversource before lease [national-grid-ma-rates] [eversource-ema-rates-2026].

Six-store licensee rollout

Per-licensee cap of six stores under H.4206 adds up to five new G-1 meters per chain [ma-ccc-modernizing-act-2026]. Enroll competitive supply at each energization [ma-dpu-basic-service]. MLP towns require delivery-only optimization [ma-dpu-basic-service].

Supplemental tariff and procurement detail

Six-store cap under H.4206 multiplies G-1 enrollment workload [ma-ccc-modernizing-act-2026]. MLP towns require delivery-only strategy [ma-dpu-basic-service]. Compare Worcester National Grid to Boston Eversource total occupancy cost [national-grid-ma-rates] [eversource-ema-rates-2026].

Six-store expansion enrollment

H.4206 six-store cap multiplies G-1 supply enrollments [ma-ccc-modernizing-act-2026]. Worcester National Grid versus Boston Eversource occupancy cost compares demand and rent [national-grid-ma-rates] [eversource-ema-rates-2026].

MLP territory verification

Verify municipal light plant territory before lease signing in greater Boston suburbs [ma-dpu-basic-service]. Six-store cap multiplies G-1 enrollments [ma-ccc-modernizing-act-2026].

Basic Service benchmark row

Record posted Basic Service price at each store opening for later supplier comparison [ma-dpu-basic-service].

Six-store cap and Basic Service benchmarks

H.4206 raised the per-licensee retail cap to six stores, multiplying G-1 enrollments for multi-brand operators [ma-ccc-modernizing-act-2026]. Record posted Basic Service price at each store opening for later supplier comparison because monthly Basic Service on medium and large C and I remains indexed to ISO-NE wholesale [ma-dpu-basic-service]. Municipal light plant territories in Ashland, Belmont, and other suburbs cannot switch supply; verify account territory before portfolio RFP [ma-dpu-basic-service]. Eversource G-1 non-demand option suits small storefronts under 10 kW peak [eversource-ema-rates-2026].

LED retrofit and supply timing

Mass Save prescriptive LED rebates reduce kWh before the next supplier RFP [masssave-business-rebates]. Align retrofit completion with contract end dates so suppliers re-price lower load shape [ma-dpu-competitive-supply-overview].

Where to go next

Class thresholds and demand math for larger accounts are on the commercial rates page. The switching guide covers DPU enrollment. Eversource-specific tariff detail is on the Eversource Massachusetts utility page.