NHEC Network Nodes - Updated February 2011

Load Modeling Information for Suppliers

2010 hourly KW data includes NHEC consumer loads for each load profile. Distribution losses and transmission losses to PTF are not included in the NHEC load profiles. NHEC's distribution loss factor for its ski areas is 1.0% and the distribution loss for primary members is 3.76%. For all other members it is 7.45%.

NHEC is represented in the NEPOOL/ISO Power System Model as four distinct Network Nodes (Metering Domains), based on the transmitting utility NHEC interconnected with in a particular geographic area at the time when NHEC became open to competitive suppliers:

• Load Assets located on the 30 NHEC delivery points interconnected with PSNH are attached to Network Node ID #1153.
• Load Assets located on the two delivery points (Charlestown and Goose Pond) interconnected with NGRID are attached to Network Node ID #1154.
• Load Assets located on the four delivery points interconnected with PSNH via CVPS (Cornish, Lyme, North Charlestown and Haverhill) are attached to Network Node ID #1155.
• Load Assets located on the single delivery point interconnected with GMP (Monroe) are attached to Network Node ID #1156.

Files: See links below for Network Nodes (Metering Domains) load data. (opens in Microsoft Excel)

The historic load data for the Network Nodes (Metering Domains) are in hourly KW. The file shows load for each hour for each day in 2010. The metering point measures load flows into the area served at the various delivery points and includes customer load and distribution system losses, but do not include the NEPOOL/ISO PTF transmission losses or the transmission provider's non-PTF losses from the PTF to the delivery point.

Load Profiles - Updated February 2011

Files: See links below for Network Nodes (Metering Domains) load data. (opens in Microsoft Excel)

Load profiles for NHEC are based on 2008 billing and delivery point data. There are five profiles for the major classes of customers.

The Streetlights load profile is based on sunset to sunrise hours of operation. Load profiles for the primary class were developed from interval metering on each consumer. Large commercial load shapes were developed from interval data of IND consumers and other similar NHEC consumer interval load data. The values of the load shape were adjusted to be similar to the billed data for this rate class. Residential load data was based on NHEC load research data adjusted for its in-state vs. out-of-state loads and the billed load data for the class. Small commercial load profiles were developed as a combination of NHEC 2008 load research data for this class and 2008 small commercial load data for other New England utilities available on the internet. Loads for IND, small commercial, and residential were then matched up with total NHEC system load (minus Primary and Street Light loads) and the residual load was allocated to those three classes.

2011 Update: Load Profiles for January 2009 to September 2010

The Streetlights load profile is based on sunset to sunrise hours of operation. Load profiles for the primary class were developed from interval metering on each consumer. The load profiles for the large and small commercial and residential classes were developed by comparing the load data for 2008 to load data for 2009-10 after subtracting out interval metered load. Load profiles were selected for 2009-10 from the days that were similar in their load shape to 2008 load shapes. The load profiles were then adjusted for the hourly difference in the load shapes between 2009-10 and the load shape selected from 2008, after subtracting out primary and ski area loads. The hours impacted by the daylight savings time switch were "normalized" so as to reduce the potential for selection bias for those days.

Files:

• 2010 Delivery Point Load by Metering Domain
• January 2009 to September 2010 Load Profiles all classes