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                  Electric Supplier Information in Western Massachusetts

                  Below please find important reference documents and information for electric suppliers doing business in Western Massachusetts.


                  Telemetering Information
                  Gordon Belcher
                  Meter Engineering
                  107 Selden St.
                  Berlin, CT 06037 
                  Fax: 860-665-2069
                  Business Contact
                  Daryush Donyavi
                  Account Executive - Supplier Services
                  1985 Blue Hills Ave Ext.
                  Windsor, CT 06095
                  EDI Testing Contact
                  Nirmal Vijaya
                  107 Seldon Street
                  Berlin, CT 06037
                  Supplier Load Estimation and NEPOOL Billing
                  Karen Hodge
                  Manager - Load Settlement & Analysis
                  107 Selden St.
                  Berlin, CT 06037 
                  Customer Interval Data Requests
                  EPO Administrator

                  Holiday Schedule

                  • New Year's Day - January 1 *
                  • Martin Luther King Day - Third Monday of January
                  • Presidents' Day - Third Monday in February
                  • Memorial Day - Last Monday in May
                  • Independence Day - July 4 * 
                  • Labor Day - First Monday in September
                  • Columbus Day - Second Monday in October
                  • Veterans Day - November 11 *
                  • Thanksgiving - When appointed
                  • Christmas - December 25 *

                  * If this holiday falls on a Sunday the following day will be observed as the holiday.

                  Important Documents & Links

                  Processing Schedule

                  Daily Activity/Event Approx. Completion Time
                  Receive Supplier EDI Input 00:00 - 15:00
                  Daily Billing Cycle Process 16:00 - 08:00 (Upload readings, post cash billing)
                  Bills printed/inserted/mailed By 18:00
                  Transmit EDI Output to Suppliers 12:00 - 15:00


                  Profile Segments

                  Load Estimation Methodology

                  Companies affiliated with the Eversource have been involved with retail access load estimation procedures since 1996, when the first pilot program began in New England and since March 1998 when retail access began in Massachusetts. Eversource's approach draws upon this experience, as well as regional work groups.

                  Supplier Hourly Load Determination

                  The daily load determination process results in estimated hourly loads for each Supplier for the previous day using interval data and customer billing information. These loads are reported to ISO-NE by 37 business hours from the day of dispatch. On a monthly basis the estimates are refined by incorporating actual usage data obtained from customer meter readings as well as additional interval readings that may now be available.

                  There are several components in the daily load determination process:

                  • Select Load Shapes: Load profiles are generated for each customer within the Eversource western Massachusetts service territory. Actual hourly load data are utilized for customers that have interval recorders installed. For all other customers, daily class profiles are estimated utilizing representative historical load research data developed from samples designed to meet DPU regulatory standards.
                  • Aggregate Usage Information: A "usage factor" is calculated for each customer. This usage factor reflects the relationship of each customer’s actual meter read cycle usage to the average usage of customers in their respective class developed from the sample data over the same period.
                  • Develop Preliminary Estimates of Hourly Loads: A preliminary estimate of each Supplier’s hourly loads is produced by scaling the appropriate class profiles, relative to the associated usage factors, and including any telemetered data. Each Supplier’s loads will then be aggregated across the classes for a Supplier’s daily profile.
                  • Incorporate Non-Pool Transmission Facility (Non-PTF) Losses : Non-PTF Losses are added to each supplier’s load. Losses are 2.33% for primary customers and 5.16% for secondary customers.
                  • Reconcile to System Loads: The Suppliers’ preliminary hourly loads are compared to the Company’s actual hourly metered loads (as metered at the PTF boundary or interconnection point with the distribution company network). The difference, or residual, is allocated to Suppliers proportionally to the estimated portion of the Suppliers’ loads.

                  Monthly Reconciliation Process

                  The monthly reconciliation process, which utilizes the same methodology as the daily load determination process, incorporates the most recent customer usage, which is available after monthly meter readings have been processed. This process also includes actual hourly demand information from the non-telemetered interval recorders that have been processed subsequent to the initial estimate. Revised Supplier values for the calendar month are reconciled to the revised system values for the same time period. Any residual is allocated proportionally to the estimated portion of the Supplier’s loads. The resulting energy values are reported to ISO-NE within 90 days from the end of the calendar month.

                  Graphic Profile Segments

                  Numeric Profile Segments

                  Month PDF Link Excel Link
                  January Link Link
                  February Link Link
                  March Link Link
                  April Link Link
                  May Link Link
                  June Link Link
                  July Link Link
                  August Link Link
                  September Link Link
                  October Link Link
                  November Link Link
                  December Link Link