NHEC Network Nodes
Updated October 2014
Load Profile Information for Suppliers
The hourly KW data include NHEC average member 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 three 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 31 NHEC delivery points interconnected with Eversource are attached to Metering Domain ID #1153. For Metering Domain #1153 the transmission losses back to the PTF are 1.98%.
- Load Assets located on the three delivery points (Charlestown, Goose Pond, and Monroe) interconnected with NGRID are attached to Metering Domain ID #1154. For Metering Domain #1154 the transmission losses back to the PTF are 2.00%.
- Load Assets located on the four delivery points interconnected with Eversource via Green Mountain Power (Cornish, Lyme, North Charlestown, and Haverhill) are attached to Metering Domain ID #1155. For Metering Domain #1155 the transmission losses back to the PTF are 5.843%.
Load Profiles – Updated October 2014
Load profiles for NHEC are based on NHEC interval data and delivery point data. There are five profiles for the major classes of members. Interval metering is used in settlement for the primary class along with some Rate IND members with larger loads. Loads on Ski Rates are interval metered.
Standard Load Profile descriptions:
The Streetlight load profiles are based on sunset to sunrise hours of operation. Load profiles for the primary class were developed from interval metering for each member. Large Commercial, Small Commercial, and Residential load shapes were also developed from interval data. Interval data for the first half of 2013 for these profiles was somewhat limited as the deployment of interval meters was being completed. Since then load shapes were developed using the full range of interval data. Currently, the Large Commercial profiles are based on the available interval data for all members of this class. Small Commercial and Residential profiles are based on a large random sample of the available data. The Small Commercial, and Residential loss adjusted loads based on these initial profiles were then matched up with total NHEC system hourly load (minus Large Commercial, Primary, and Street Light loss adjusted loads). For each hour, any residual load was allocated on an equal percentage bases between the Small Commercial and Residential classes to get their final load profiles.