What to establish before acting
Use the utility, class, current supplier, pricing period, and actual contracts to define the baseline. Do not extend residential basic-service durations or shopping rules automatically to all commercial accounts. DPU resources describe competitive products, and business offers need their own scope and fees. Eversource, National Grid, Unitil, and municipal arrangements are not interchangeable tariffs. Gas service is a separate eligibility and delivery inquiry, with seasonal volume and any firm or interruptible conditions recorded explicitly.
Illustrative decision boundary
A hypothetical business mistakes its municipal aggregation supplier for an individually negotiated agreement. Reviewing the bill and program documents changes the relevant notice and comparison questions. Confirm current supply status first, then compare the proposed alternative on matching components and dates.
Documents for a useful review
- Utility, class, current supplier, aggregation documents if any, and contracts.
- Applicable basic-service period and commercial offer inclusions or fees.
- Gas service details and renewable attribute evidence for any claim.
Questions & answers
Where can I investigate eligible supply offers?
The Massachusetts DPU’s Energy Switch and competitive-supply resources are official starting points. Verify commercial class, territory, terms, and account applicability before treating a posted offer as executable.
Does municipal aggregation mean a municipal utility?
No. An aggregation purchases supply for eligible participants, while a municipal light department is a utility arrangement. Confirm which applies to the location.
Are all basic-service changes on one statewide schedule?
Do not assume so. Utility and customer class matter, and residential summaries can differ from larger business treatment. Use the actual tariff period.
Does a renewable supplier product exceed legal requirements?
Inspect the exact product and attribute evidence. Mandated renewable content and an additional voluntary purchase should not be combined into an overstated claim.
Can an electric comparison settle my gas choice?
No. Confirm the gas distribution company, tariff, units, service conditions, and current supply agreement independently.
Can leaving basic service create an adjustment?
Check the actual utility and customer-class rules. Do not assume a posted comparison captures every switching or reconciliation item, and include applicable adjustments in the total-cost analysis.
Sources & scope
Primary references reviewed October 15, 2026. These sources support the stated concepts; actual tariffs, program rules and signed agreements govern the account. Decision examples and operational worksheets are original educational analysis.
- Massachusetts DPU: Competitive supply product overview
Supply, delivery, product structures, and renewable content. - ISO New England: Administer the wholesale markets
Regional energy, capacity, and ancillary-service functions; not retail eligibility. - EPA: Renewable energy market principles
Regulatory surplus and avoiding duplicate environmental claims. - EIA: Natural gas customer choice programs
Gas marketing, distribution, and differences among choice programs.