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Parties File Comments Urging the PUC to Make Interval Data Available to Suppliers
On April 23, 2026 parties filed responses to ALJ questions and initial comments in Massachusetts investigation by the department of public utilities on its own motion into the use of interval data collected by advanced metering infrastructure to settle load with ISO New England.
Retail Energy Supply Association – RESA urged DPU to require utilities “to make interval data available to suppliers and for ISO-NE settlements once a customer’s AMI meter has been installed and not wait until the entire AMI deployment is complete.“
RESA also stated that “Bill enhancements are necessary to support adoption of the more complex products that will be enabled by interval data” and recommended implementation of supplier consolidated bill (SCB), noting that “at a minimum, provides a solution that will enhance the range of pricing and product offerings that are available to customers, especially customers that prefer to receive a single bill”
RESA also identified benefits of interval data usage, many of which were echoed by other parties, including that: (i) “ISO-NE settlements based on interval data will reduce peak demand,” including by enabling virtual power plants (VPPs); (ii) capacity “tags calculated from interval data are based on ‘customers actual peak kW at the time of the ISO-NE peak’,” and are thus “inherently more accurate and equitable”; (iii) “Interval data will improve the accuracy of load forecasts”; (iv) “Interval data will improve customer understanding and control”; and (v) the products enabled by interval-based load settlement “can enable substantial value creation and savings.”
Joint Suppliers requested DPU set an implementation deadline of Q1 2027.
Joint Suppliers also urged DPU to “Reject any effort to saddle suppliers or any third party with the cost to develop the utility systems necessary to deliver the benefits of AMI,” noting that the utilities “have already committed, on the record and under oath, to using actual AMI interval data for ISO-NE load settlement once meters are deployed” and “have spent only a small fraction of the budgets preliminarily approved by the Department for customer enablement and system integration.”
Joint Suppliers also argued that without utilities having the “capability to report hourly supplier load and customer interval usage data to ISO-NE for load settlement… municipal aggregators, default suppliers… and retail suppliers, will not be able to offer TVR, and customers will not be able to earn the financial rewards that would flow from reducing peak demand or VPPs”
ISO-NE – “Timely and accurate reporting of meter data is critical to ensure the bi-weekly energy and ancillary markets settlement process can occur as scheduled.”
DPU initiated this proceeding to develop policies and systems to enable third-party electricity suppliers to offer time-varying rates (TVR) and to allow load settlement with ISO New England (ISO-NE) based on customer interval usage data collected by advanced metering infrastructure (AMI).
