Customer Segments

RESIDENTIAL (RS)

Residential customers have weather-sensitive end uses (e.g., air conditioning, electric heat) that significantly affect energy consumption. However, since most customers use air conditioning, winter energy consumption was used as the segmentation criterion to represent weather-sensitive heating loads. The segmentation is based upon the customer's maximum monthly winter consumption (kWh). In addition to the segments listed below, there is a default segment for residential (RSO). Customers will be assigned to this default segment when their winter use is unknown.

RS Segment	Design	Winter Month kWh
5	Low	<1,190
6	High	>=1,190

DISTRIBUTION – Small (DM)

The DM class of customers are small (average demand/energy = 4.4 kW/15,000 kWh), relatively homogenous class with no significant weather sensitivity or seasonality. Therefore a single segmentation strategy is utilized:

DM Segment	Design	Annual kWh
0	All	Any

DISTRIBUTION – Large (DS)

Various segmentation variables and strategies were evaluated for the DS class: seasonal and annual energy consumption, demand and load factor, and customers with demands greater and less than 100 kW. Using peak demand for the 12-month period as a segmentation criterion is based on the practice of installing load data recorders on all customers with demands of 100 kW or greater who choose a certified supplier. Any DS customer that is not known to be 100 kW or more will be included in the low (DS4) profile. This would include customers whose demand is unknown.

DS Segment	Design	Peak kW
4	Low	<100
5	High	>=100

Segment summary

Segments utilize Weather Response Functions (WRF), and "static profiles." These segments are as follows:

WRF

Residential – RS0, RS5, RS6
Medium commercial/small industrial – DM0
Large commercial/medium industrial – DS4, DS5

STATIC PROFILE 

Street lights

FLAT LOAD 

General service flat load (GSFL) (supplier created)
Traffic light (TL) (supplier created)