PacifiCorp 2007 Integrated Resource Plan (May 30, 2007)

PacifiCorp – 2007 IRPChapter 4 – Resource Needs AssessmentClass 2 Demand-side ManagementThe cumulative historical energy and capacity savings (1992-2006) associated with Class 2 DSMresource acquisitions are over 300 average megawatts of energy and 390 megawatts respectively(at the generator). The company projects that through the 2016 planning period, existing Class 2programs will yield, on average, an additional 23 MWa and 30 megawatts each year in energyand capacity reductions, respectively. The company is actively seeking new Class 2 programsand improvements to existing programs in an effort to nearly double this amount, provided thoseresources can be acquired cost-effectively.Class 3 Demand-side ManagementThe company has numerous Class 3 programs currently available. They include metered time-ofdayand time-of-use pricing plans (in all states, availability varies by customer class), a seasonalinverted rate program (Utah), year-around inverted rate programs (Oregon, Washington andCalifornia) and Energy Exchange programs (Oregon, Utah and Washington). Savings associatedwith these programs are captured within the company’s load forecast, with the exception of theEnergy Exchange program. The impacts of these programs are thus captured in the integratedresource planning framework. Future savings associated with new programs, or added savings ofexisting programs, are relied upon as reliability resources as opposed to base resources. Currentsystem-wide participation in metered time-of-day and time-of-use programs exceeds 23,000 customers,up from 15,000 in 2004. Approximately 1.25 million residential customers—89% of thecompany’s residential customer base—are currently subject to inverted rate plans either seasonallyor year-around.PacifiCorp continues to evaluate Class 3 programs for applicability to long-term resource planning.As discussed in subsequent chapters, a variety of these programs were included as resourceoptions in scenario modeling.Class 4 Demand-side ManagementEducating customers regarding energy efficiency and load management opportunities is an importantcomponent of the Company’s long-term resource acquisition plan. A variety of channelsare used to educate customers including television, radio, newspapers, bill inserts, bill messages,newsletters, school education programs, and personal contact. Specific firm load reductions dueto education will show up in other Class 4 DSM program results and changes in the load forecastover time.Table 4.11 summarizes the existing DSM programs, and describes how they are accounted for asa planned resource.Table 4.11 – Existing DSM Summary, 2007-2016ProgramClass1DescriptionEnergy Savings or Capacityat GeneratorIncluded as Base Resources for2007-2016 PeriodResidential/small commercial100 MW summer peak Yesair conditioner loadcontrolIrrigation loadmanagement55 MW summer peak YesInterruptible contracts 233 MW building to 308 MW Yes73