Northwest Power and Conservation Council Perspective Program for Commercial New Construction CNC Small Office RTF July 2007

Northwest Power and Conservation Council slide 2 Goal: A Prescriptive Program For Selected Simple Commercial New Construction Whole-building, integrated measure approach where possible and effective Whole-building, integrated measure approach where possible and effective Deemed or deemed-calculated savings Deemed or deemed-calculated savings Commonality across the region Commonality across the region Training for designers, builders & developers Training for designers, builders & developers

Northwest Power and Conservation Council slide 3 Progress CNC Strategy Group CNC Strategy Group –Six meetings on regional needs & opportunities RTF Subcommittee RTF Subcommittee –Small Office Focus –Reviewed 21 measures, analyzed 8 in detail –Oregon code base, two climates Boise & Portland –Four HVAC system types considered »PSZGas, PSZHP, PVAVElec, PVAVGas –Details in: DRAFT CNC Prescriptive Concept July2007.doc

Northwest Power and Conservation Council slide 4 Progress Several iterations on baseline conditions Several iterations on baseline conditions –Size, fenestration, HVAC system, schedules … Several iterations on measures Several iterations on measures –What is the measure, how to model it in EQuest –Incremental cost difficult to acquire

Northwest Power and Conservation Council slide 5 Detailed Analysis on 8 Measures Glass Glass –Code to U40 SHGC40 –Code to U35 SHGC35 Lighting Power Density Lighting Power Density –Code (1.0 W/sf) to 0.75 W/sf –HPT8 & T5HO Occupancy sensor lighting in open office Occupancy sensor lighting in open office Fan power improvement Fan power improvement Rooftop economizer Cx Rooftop economizer Cx Premium HVAC equipment (CEE Tier 2 EERs) Premium HVAC equipment (CEE Tier 2 EERs)

Northwest Power and Conservation Council slide 6 Summary of Results to Date Most measures look to be TRC cost-effective except: Most measures look to be TRC cost-effective except: –CEE Tier 2 equipment –Fan power in the VAV systems –Rooftop CX in the PSZ systems –T5HO lighting option Most kWh savings provided by HPT8 lighting Most kWh savings provided by HPT8 lighting Windows: Second biggest electric measure & the biggest gas measure Windows: Second biggest electric measure & the biggest gas measure HVAC measures provide about 1/5 of lighting & window savings HVAC measures provide about 1/5 of lighting & window savings

Northwest Power and Conservation Council slide 7 Summary of Results to Date Climate makes little difference in the kWh savings estimates Climate makes little difference in the kWh savings estimates –Except for windows in the HP systems Climate makes a very modest difference in gas savings for the U35 window measure Climate makes a very modest difference in gas savings for the U35 window measure HVAC system type has bigger impact on kWh & therm savings HVAC system type has bigger impact on kWh & therm savings

Northwest Power and Conservation Council slide 8 kWh Savings

Northwest Power and Conservation Council slide 9 Therm Savings

Northwest Power and Conservation Council slide 10 Cost

Northwest Power and Conservation Council slide 11 TRC B/C Ratio by Measure

Northwest Power and Conservation Council slide 12 Climate Impact on Windows (kWh)

Northwest Power and Conservation Council slide 13 Climate Impact on Windows (therms)

Northwest Power and Conservation Council slide 14 CEE Tier 2 Equipment

Northwest Power and Conservation Council slide 15 Measures Combined to Packages B/C ratios are between 1.0 and 2.0 for most packages B/C ratios are between 1.0 and 2.0 for most packages –High B/C measures compensate for low But not enough savings to cover all the low B/C ratio measures But not enough savings to cover all the low B/C ratio measures –Either CEE T2 OR T5HO lighting option See tables in: SmallOffice-PC253-alpha.xls See tables in: SmallOffice-PC253-alpha.xls

Northwest Power and Conservation Council slide 16 Issues CEE Tier 2 HVAC Equip CEE Tier 2 HVAC Equip –Cost uncertainty & Low B/C ratio –Will costs come down? Packages Packages Is baseline really code? What is standard practice? Is baseline really code? What is standard practice? –Window U value and SHGC – LPD Other measures Other measures Other state baselines Other state baselines

Northwest Power and Conservation Council slide 17 Recommendations Plenty of cost-effective savings to proceed Plenty of cost-effective savings to proceed Start program design work Start program design work Package measures into appropriate bundles Package measures into appropriate bundles Develop specifications for measures Develop specifications for measures Analyze other state baselines Analyze other state baselines Analyze other climates Analyze other climates Design evaluation Design evaluation