Two Paths, One Program: Incorporating Prescriptive and Performance Approaches in a Multi-State New Construction Program

Dave Backen, Ecos Consulting
James E. Gilroy, PacifiCorp

Keywords

Abstract

Utilities have tried countless means and approaches to encourage higher energy efficiency standards for new homes rather than trying to retrofit them at some later date. Today, there are many new residential construction demand-side resource programs around the country aiming to cost-effectively capture what would otherwise be “lost opportunities.”

PacifiCorp operates electric-only utilities in six different states, each with distinct requirements and needs from a resource perspective. This entails tailoring programs to ensure the most cost-effective approach possible. PacifiCorp’s Utah Power program in Utah and the Pacific Power program in Washington follow two different paths, albeit under the same ENERGY STAR® New Homes Program umbrella. In Utah, the new construction program is designed as a “performance path” program using Home Energy Rating System (HERS) Raters to perform inspections and verification. Washington is designed to correspond with the existing four-state Northwest ENERGY STAR program operated by the Northwest Energy Efficiency Alliance. It uses a prescriptive “Builder Option Package” approach.

This paper discusses the process pursued in the design of the PacifiCorp New Homes program, as well as the challenges of creating, designing and operating an electric savings-only program for a multiple-state utility. It highlights anticipated energy savings, incremental costs, and the importance of developing creative marketing approaches in meeting the requirements of different program designs. It also offers a glimpse into the obstacles encountered and how they were overcome.