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      • About Us

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        Learn how ISO New England is fulfilling its Vision and upholding its Mission as the region transitions to a cleaner power system

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        Key Study Areas

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        Ensuring that New England’s transmission system can reliably deliver power under a wide range of future system conditions

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        ISO Express

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        Settlements and Billing

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        Transmission Operations and Services

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        Facilitating competitive markets and reliable wholesale electricity delivery in New England

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      • Markets and Operations
      • Settlements and Billing

      Understanding the Bill

      In this section

      • Settlements and Billing
      • Understanding the Bill
      • Billing Materials and Forms
      • Billing Disputes
      • Settlement and Metering Holidays
      • Quarterly Settlements Forum
      • Metering and Resettlement Deadlines
      • Tariff Rates
      • Rate Development of Regional Transmission Charges
      • IROL-CIP Cost Recovery Under Schedule 17
      • Transmission Formula Rate Protocols Information Exchange
      • Generation Information System
      • Emergency Power Sales and Purchases
      • FERC Electric Quarterly Reporting
      • Pricing-Node Table

      Related Links

      • Transmission, Markets, and Services Tariff
      • Manuals

      ISO New England releases billing statements electronically twice a week. The following materials define and describe the billing process:

      • ISO Billing Policy—the billing and payment procedures defined in Exhibit 1D within the ISO New England Inc. Transmission, Markets, and Services Tariff

      • Billing Process Summary—a brief introduction to the billing process for new customers and a guide to available settlement-related resources, including timelines, metering and billing schedules, and other settlement documents
      • Settlement Timeline—visual timelines illustrating the timing of data submission and reporting, and the responsible parties for the different steps in the settlement to bill process

      For detailed guidance on the billing process and statements, see the following:

      • Sample Invoice and Remittance Advice—a sample bill containing detailed information related to each component/section of the billing statement, including explanations, tips, and key differences between invoices and remittance advice
      • ISO Statement Issuance Document—an explanation of invoice issuance dates and their associated payment and remittance due dates
      • Billable Line-Item Descriptions—links to detailed explanations of each line item found on ISO bills, including related Market Information Server (MIS) Reports, calculation trees, and supporting documents
      • MIS Report Descriptions, Templates, and Samples—an alphabetical listing of MIS reports with links to report descriptions and explanations, information on report availability, templates, and sample files

      Access below the following types of resources to help reconcile your current ISO billing statement or to learn which line items are forecasted to appear on your next billing statement:

      • Billing job aids (for past two years) are detailed lists of line items and their associated billing period(s) that may appear on a statement, which can assist customers in accurately reconciling their bill. Hyperlinks for obtaining settlement-related information and verifying invoice and remittance advice line items also included.
      • Forecasted billing schedules are the estimated operating days and markets to be included in specific weekly and monthly bills.

      Other Helpful Resources

      • Billing Process FAQs
      • Wholesale Electricity Costs
      • OATT and ISO Tariff FAQs
      • ISO Training
      • Divisional Accounting Project Information

      For questions on ISO billing, contact Participant Support.

      Billing Information Materials

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      Applications

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      Markets and Operations Forecasting

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