Massachusetts Electric Company (d/b/a National Grid) Rate Selection Guide
Massachusetts Electric Company, operating as National Grid, is the largest electric distribution utility in Massachusetts, serving about 1.4 million customers. As a regulated wires company in a deregulated supply market, it offers robust programmatic data access via MyAccount, Green Button Connect (UtilityAPI), Energy Profiler Online, and supplier EDI.
Massachusetts Electric Company (d/b/a National Grid) Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| G-1 | Commercial | Customer Charge + per-kWh (no demand charge) | Small offices, retail, light commercial under 200 kW |
| G-2 | Commercial (Demand) | Customer Charge + per-kW demand + per-kWh | Mid-size C&I, 10,000+ kWh/month up to 200 kW |
| G-3 | Industrial (TOU) | Time-of-use energy + demand charges | Large facilities over 200 kW able to shift peak load |
| Basic Service | Default Supply | ~21.7 cents/kWh commercial (Jan 2026), reset semiannually | Customers not shopping competitive supply |
Market Overview
National Grid is the regulated distribution utility. The supply (generation) portion is competitive: customers may select a licensed competitive supplier or participate in municipal/community aggregation, or default to National Grid Basic Service (procured at cost, reset semiannually).
Need to pull your actual usage data to compare rates? See the Massachusetts Electric Company (d/b/a National Grid) Data Access Guide →
Community Choice Aggregation (CCA) Options
Many Massachusetts cities and towns run municipal aggregation programs that procure supply on behalf of all residents and businesses in the community, often at competitive fixed rates, while National Grid continues delivery.
Current Rate Schedules
National Grid's Massachusetts bill separates regulated delivery (distribution + transmission, set in the M.D.P.U. tariff) from supply. Delivery service for C&I is provided under General Service rates G-1 (small), G-2 (demand) and G-3 (time-of-use), each a Customer Charge plus per-kWh and (for G-2/G-3) per-kW demand charges. The supply portion is either a competitive supplier price or National Grid Basic Service, which for the commercial class was approximately 21.7 cents per kWh for the January 2026 period. Specific per-unit delivery charges are published in the Summary of Electric Service Rates tariff and change with periodic adjustment provisions.
Effective: January 1, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Rate G-1 — General Service | commercial | Small commercial & industrial accounts with estimated average use under 10,000 kWh/month and under 200 kW demand. | Monthly Customer Charge plus per-kWh distribution and transmission charges (no demand charge). Supply via competitive supplier or Basic Service (~21.7 cents/kWh commercial, Jan 2026 period). | — |
| Rate G-2 — General Service Demand | commercial | C&I accounts estimated to exceed 10,000 kWh/month but not exceed 200 kW of demand (M.D.P.U. No. 1547, effective Oct 1, 2024). | Customer Charge plus per-kW demand charge plus per-kWh charges. Demand is the greatest 15-minute peak (minimum 5 kW; kVA basis above 75 kW). High-voltage metering and EV load-factor price schedules available. | — |
| Rate G-3 — General Service Time-of-Use | industrial | Large C&I accounts exceeding 200 kW of demand (M.D.P.U. No. 1591). Customers may move off G-3 if 12-month average demand falls below 180 kW for 3 consecutive months. | Time-of-use energy and demand charges; peak hours 8 a.m.-9 p.m. weekdays (excl. holidays), off-peak otherwise. Eligible for high-voltage and 115 kV service discounts. | — |
| G-2 EV Pricing | ev | Separately metered Level 2 and DC fast-charging EV sites (10-year program July 2023-June 2033). | Sliding-scale base distribution demand charge and energy rate across four price schedules (A-D) based on annual load factor, to mitigate demand charges for low-utilization EV charging. | — |
| Basic Service (Default Supply) | commercial | Any customer not taking competitive supply receives Basic Service supply. | Pass-through generation supply procured at cost with no utility markup; commercial Basic Service was approximately 21.7 cents/kWh for the January 2026 period and resets semiannually. | — |
Rate Recommendations by Use Case
Mid-size commercial facility (10,000+ kWh/month, under 200 kW)
Confirm placement on Rate G-2 and actively manage demand using interval data.
G-2 introduces per-kW demand charges billed on the greatest 15-minute peak, so peak control directly lowers the bill.
- Export 15-minute data from MyAccount monthly
- Stagger large equipment startups to avoid coincident peaks
- Evaluate competitive supply or municipal aggregation for the supply portion
Large industrial / multi-site (over 200 kW)
Operate on Rate G-3 time-of-use and pursue high-voltage discounts plus load shifting.
TOU energy/demand pricing rewards moving load out of the weekday peak window, and qualifying large loads earn high-voltage/115 kV discounts.
- Subscribe to Energy Profiler Online for multi-site load analysis
- Shift discretionary load to off-peak (after 9 p.m. weekdays/weekends)
- Solicit broker quotes for competitive supply priced to your load profile
Fleet / commercial EV charging site
Use the G-2 EV Pricing load-factor schedules to cushion demand charges on low-utilization charging.
Separately metered EV charging can be placed on sliding-scale price schedules (A-D) that reduce demand charges for low load factors during the 2023-2033 program.
- Separately meter EV charging load
- Track annual load factor to land on the best price schedule
- Charge off-peak where operationally feasible
Energy consultant / third-party data integration
Use Green Button Connect (UtilityAPI) or supplier EDI to automate data collection across a client portfolio.
Manual MyAccount exports do not scale; Green Button Connect and EDI provide authorized, automated interval and billing data feeds.
- Register with UtilityAPI and complete National Grid compliance review
- Have clients authorize via OAuth Green Button flow
- For supplier-scale needs, certify for ANSI X12 EDI (814/867/810/820)
Historical Rate Trends
National Grid Massachusetts delivery rates change through periodic M.D.P.U. tariff filings and statutory adjustment provisions, while Basic Service supply resets semiannually and is the most volatile component for customers who do not shop.
October 1, 2024
G-2 General Service Demand delivery tariff reissued as M.D.P.U. No. 1547, canceling No. 1472.
n/aJanuary 1, 2026
Commercial Basic Service (default supply) set at approximately 21.7 cents/kWh for the January 2026 period.
n/aOverall trend: Delivery rates have risen with infrastructure, grid modernization, and storm-cost provisions; Basic Service supply fluctuates with wholesale ISO-NE markets.
Next expected change: Next Basic Service supply reset in the following six-month cycle; delivery adjustments per ongoing M.D.P.U. provisions.
Cost Optimization Strategies
C&I customers reduce cost by managing demand and load factor on G-2/G-3, choosing the right delivery class, and optimizing the deregulated supply portion.
Demand (peak) management
For: G-2 and G-3 customers
Use 15-minute interval data from MyAccount or EPO to identify and shave coincident peaks; demand charges on G-2/G-3 are billed on the greatest 15-minute peak.
Load shifting under TOU
For: G-3 (over 200 kW)
On G-3, shift discretionary load out of the 8 a.m.-9 p.m. weekday peak window to off-peak hours.
Competitive supply / aggregation
For: All C&I
Procure the supply portion from a competitive supplier or municipal aggregation priced to your load shape rather than defaulting to semiannually-reset Basic Service.
High-voltage / EV price schedules
For: Large customers / EV charging sites
Qualify for high-voltage metering and 115 kV discounts, or place low-utilization EV charging on the G-2 EV load-factor price schedules.
To implement these strategies, you need your 15-minute interval data. Learn how to download Massachusetts Electric Company (d/b/a National Grid) interval data →
Deregulated Market Shopping
Massachusetts C&I customers can lower the supply portion of their bill by contracting with a licensed competitive supplier or joining municipal aggregation, while National Grid's regulated delivery charges remain the same regardless of supplier. The state-run Energy Switch MA portal lists licensed residential offers; C&I customers typically procure through brokers or direct supplier contracts.
How to Compare Massachusetts Electric Company (d/b/a National Grid) Suppliers
- 01Pull 12 months of interval/usage data from MyAccount to define your load shape
- 02Compare competitive supplier fixed/index offers against the prevailing National Grid Basic Service rate
- 03For larger loads, solicit broker or direct supplier quotes priced to your load profile
- 04Confirm contract start aligns with a meter-read date to avoid double supply charges
Contract Terms for Massachusetts Electric Company (d/b/a National Grid) Supply Agreements
- Fixed-rate terms commonly 6-36 months
- Index/variable products tied to ISO-NE wholesale prices
- Watch for bandwidth/swing limits and material-change clauses on C&I contracts
Common Pitfalls When Shopping Massachusetts Electric Company (d/b/a National Grid) Rates
- Variable rates can spike after a low teaser period
- Early-termination fees on fixed contracts
- Delivery charges and statutory adjustments are unaffected by supplier choice — only the supply line item changes
- Confirm whether the supplier or National Grid issues the consolidated bill
Frequently Asked Questions
How does a C&I customer get 15-minute interval data from National Grid in Massachusetts?▾
If the site has an AMI smart meter, interval data is visible in MyAccount under Track Usage and can be exported as CSV or Green Button XML. For deeper analysis across multiple sites, business customers can subscribe to Energy Profiler Online (first two weeks free each calendar year, $243 for a full year). Authorized third parties can also pull interval data via Green Button Connect (UtilityAPI) or, for suppliers, via 867 EDI transactions.
Can a third party (consultant or energy manager) access our usage data automatically?▾
Yes. The recommended path is Green Button Connect through UtilityAPI: the vendor registers, completes National Grid's compliance review, then the customer authorizes data sharing via OAuth. Suppliers and ESCOs that exchange data at scale use ANSI X12 EDI (814/867/810/820). A consultant can also be added as an authorized user directly on MyAccount.
Which delivery rate applies to our commercial or industrial facility?▾
Rate G-1 applies to small commercial/industrial accounts averaging under 10,000 kWh/month. Accounts exceeding 10,000 kWh/month (but under 200 kW) move to demand rate G-2. Accounts over 200 kW move to time-of-use rate G-3. All include separately set distribution, transmission, and (unless you choose a supplier) Basic Service supply components.
Do we have to buy our electricity supply from National Grid?▾
No. Massachusetts is deregulated. You can buy the generation/supply portion from a competitive supplier or through municipal aggregation, while National Grid continues to deliver the power and read the meter. If you make no choice, you receive Basic Service procured by National Grid at cost with no markup, reset every six months.
How far back does billing and usage history go?▾
MyAccount provides up to 24 months of billing history (exportable via 'Export All Billing Rows'). AMI interval usage typically appears within ~30 days of meter installation and is retained going forward; Energy Profiler Online retains months to years of interval load data for enrolled business accounts.
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