Massachusetts Electric Company (d/b/a National Grid) Data Access 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.
How to Get Your Massachusetts Electric Company (d/b/a National Grid) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| MyAccount Portal | ✓ | ✓ | Residential & C&I | Billing, usage | Daily | PDF, CSV, XML |
| Smart Meter Data (MyAccount) | ✓ | — | AMI customers | 15-min intervals | Near real-time | CSV, Green Button XML |
| Energy Profiler Online | ✓ | ✓ | Business (interval meter) | Interval load data | Near real-time | Excel, CSV |
| Green Button Connect (UtilityAPI) | ✓ | ✓ | Residential & C&I | Billing, interval usage | Daily | XML, JSON |
| EDI (X12) | — | ✓ | Competitive suppliers | Enrollment, usage, billing | Daily | EDI X12 |
Billing Data Access
Business and residential customers access billing data through the MyAccount online portal, viewing and downloading current and historical statements, payment history, and usage summaries. Authorized third parties (consultants, ESCOs, facilities managers) can be granted equivalent access with customer consent.
What Data Is on Your Massachusetts Electric Company (d/b/a National Grid) Bill
- Monthly billing statements
- Bill amounts and rate components
- Payment history
- Energy usage summaries
- Delivery and supply charge breakdowns
How to Download Massachusetts Electric Company (d/b/a National Grid) Bills (Business & Commercial)
- 01Sign in to MyAccount with the business account credentials
- 02Link multiple premises/accounts to one profile for portfolio view
- 03Use Bill History export for bulk billing data
- 04Use Track Usage to download interval/usage data as CSV or Green Button XML
How to Download Massachusetts Electric Company (d/b/a National Grid) Bills (Residential)
- 01Sign in at myaccount.nationalgrid.com
- 02Open the Bills & Payments tab and select Bill History
- 03Click the PDF icon to download an individual bill
- 04Click 'Export All Billing Rows' to bulk-download up to 24 months of bill and payment data
Third-Party Access to Massachusetts Electric Company (d/b/a National Grid) Billing Data
Authorized Representative on MyAccount
- 01Customer adds the third-party organization in MyAccount account settings
- 02Customer grants billing/usage data permission
- 03Third party logs in and views/exports billing data
- 04Customer can revoke access at any time
Want to understand the charges on your bill?
See the Massachusetts Electric Company (d/b/a National Grid) Rate Schedules & Tariff Guide →Interval Data & Smart Meters
National Grid is deploying AMI smart meters across Massachusetts (500,000+ installed as of April 2026; target of all ~1.4 million customers by end of 2027), collecting 15-minute interval data. Customers view interval usage in MyAccount; business customers can subscribe to Energy Profiler Online for detailed interval load analysis.
How to Download Massachusetts Electric Company (d/b/a National Grid) Interval Data via Green Button
- 01Sign in to MyAccount and open Track Usage / Energy Use
- 02Select Electric usage and a date range
- 03Choose download format: CSV/Excel or Green Button XML
- 04Import the file into a third-party energy management tool
Interval data is essential for rate comparison and TOU analysis.
See which Massachusetts Electric Company (d/b/a National Grid) rate schedule is best for your usage pattern →Third-Party API Access
Third-party developers, ESCOs, aggregators, and service providers integrate with National Grid's Green Button Connect platform (operated through UtilityAPI) to securely request customer interval and billing data after OAuth authorization.
Available Massachusetts Electric Company (d/b/a National Grid) API Endpoints
| Function | Endpoint | Method | Format |
|---|---|---|---|
| Authorize customer data access | OAuth 2.0 authorization endpoint (Green Button) | GET | Authorization token |
| Retrieve usage/billing data | Green Button resource server (ESPI) | GET | XML (ESPI) or JSON |
How to Register as a Massachusetts Electric Company (d/b/a National Grid) API Vendor
- 01Register at utilityapi.com/register and select National Grid
- 02Operate in sandbox mode for integration testing
- 03Complete National Grid compliance and IT security review (1-2 weeks)
- 04Receive live-mode approval and OAuth client_id
- 05Direct customers through the Green Button authorization flow
- 06Call Green Button API endpoints to retrieve authorized data
EDI (Electronic Data Interchange)
Supported Massachusetts Electric Company (d/b/a National Grid) EDI Transaction Sets
| Code | Name | Purpose |
|---|---|---|
| 814 | Enrollment / Change | Customer enrollment, drop, and change requests |
| 867 | Usage / Meter Reading | Delivery of metered usage data to suppliers |
| 810 | Invoice | Consolidated billing invoice |
| 820 | Remittance Advice | Payment / remittance under POR and non-POR |
How to Enroll in Massachusetts Electric Company (d/b/a National Grid) EDI
- 01Attend National Grid Electric Supplier/Broker training
- 02Obtain a Massachusetts DPU Electric Supplier License
- 03Submit Competitive Supplier Agreement, ISO-NE registration, EDI Pre-Testing Worksheet and Testing Policy to National Grid
- 04Complete EDI pre-testing and Phase III certification testing
- 05Receive EDI certification and production credentials
- 06Establish production VAN or direct EDI connection
Rate Schedules & Tariff Analysis
For C&I customers the cost drivers are (1) the delivery class (G-1/G-2/G-3), where moving into demand-based G-2 and TOU G-3 introduces per-kW demand and time-differentiated charges, and (2) the supply choice between competitive suppliers/aggregation and National Grid Basic Service. Demand charges on G-2/G-3 reward high load factor and peak management; the G-2 EV price schedules specifically cushion low-load-factor EV charging.
Massachusetts Electric Company (d/b/a National Grid) Rate Schedule List
| Schedule | Applicability |
|---|---|
| Rate G-1 | Small C&I under 10,000 kWh/month, under 200 kW |
| Rate G-2 (Demand) | C&I over 10,000 kWh/month up to 200 kW; min demand 5 kW |
| Rate G-3 (TOU) | Large C&I over 200 kW; peak 8a-9p weekdays |
| G-2 EV Pricing | Separately metered EV charging, load-factor price schedules A-D |
Massachusetts Electric Company (d/b/a National Grid) Rate Features & TOU Details
- Three-tier general service structure (G-1 energy-only, G-2 demand, G-3 TOU)
- Demand defined as greatest 15-minute peak; 5 kW minimum on G-2, kVA basis above 75 kW
- TOU peak window 8 a.m.-9 p.m. weekdays on G-3
- High-voltage metering and 115 kV service discounts for qualifying large customers
- 10% Farm Discount for eligible agricultural accounts
- Deregulated supply: competitive suppliers, municipal aggregation, or Basic Service
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Massachusetts Electric Company (d/b/a National Grid) Rate Optimization Guide →Other Data Access Programs
System Data Portal (Hosting Capacity)
Interactive map of distribution infrastructure and available hosting capacity for distributed generation and EV charging project planning.
- 01Visit systemdataportal.nationalgrid.com/MA/
- 02Register for an account if required
- 03Browse feeders/substations and voltage/capacity data
- 04Export feeder information where supported
Customer Information List (Supplier Marketing)
Under D.T.E. 01-54-A, National Grid provides approved competitive suppliers an aggregated customer list (name, address, rate class, 12-month kWh/demand). Customers may opt out.
- 01Become an approved competitive supplier
- 02Request the customer information list during enrollment
- 03Receive periodic (monthly/quarterly) updates
Limitations & Considerations
- ⚠Smart meter (AMI) rollout is still in progress; not all sites yet have 15-minute interval data — full deployment targeted for end of 2027.
- ⚠Energy Profiler Online charges subscription fees beyond the free two-week period and its data is explicitly not billing-quality.
- ⚠Green Button Connect third-party access requires National Grid compliance/security approval, which can take 1-2 weeks.
- ⚠Verified dollar figures below are National Grid delivery (distribution) tariff structure and Basic Service supply; total bill also includes transmission and statutory adjustment provisions that change periodically.
Massachusetts Electric Company (d/b/a National Grid) Data Access FAQ
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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