Energy Audit Recommendations

Net Impact Service CorpsEnergy Efficiency ProjectAdministration Building

Lack of dedicated building meterSolution: Estimate square footage of Herberger in relation to total area serviced by meterEstimate 12% of total electrical usage.12 × Total Monthly Bill = Building Energy Demand Estimating Baseline Energy Usage

Notes on CalculationsLighting and Office Appliances were calculated through “bottom-up” physical inventory of buildingHVAC was calculated from a “top-down” approach, as follows:

Average Yearly CostCreation of estimate range based on building type Since the Herbergerbuilding houses more lighting, office equipment, and a greater air volume due to large foyers and auditorium, it is estimated that the building consumes anywhere from 12 to 14% of total metered area.

Lighting Analysis and RecommendationsAlmost half of the building benefits from reduced energy usage due to T8 bulbsConvert Remaining T12 Lights to T8 This low-cost option will save approximately 20,448 kWh of electricity, creating a yearly savings of $1,669Adopting a lighting control policy that reduces lighting from 12 to 11 hours a dayWithout any capital requirements, the building can save approximately 14,973 kWh, representing yearly savings of $1,222Implementing both of these policies together will save $2,690 per year, representing a 2.5-3% decrease in the total energy bill

Future savings can be achieved by installing motion sensors in lower-traffic areas and automating light operation with timersLights ContinuedAverage Lifespan for T8 Florescent BulbsNot All T8’s are created equal

The Average T12 bulb lasts only 12,000 hours, effectively doubling the purchase/replacement of lightCurrent Replacement Costs

Appliance Analysis and RecommendationsGreat News! Computer consoles and monitors exceed EnergyStar guidelines and represent low electrical usage, regardless of sleep mode or power off modeXerox machines also offer powerful energy savings, though these features may not be optimizedOptimization of power settings will enable maximum energy savings of up to 7,900 kWh, a reduction of $645 annuallyVending machines represent huge drains of electricity, though this can be mitigated in two waysRequesting to vendor that machines be delamped costs nothing, and will instantly save $286 annuallyVend Misers can also be installed, at a cost of $358, and savings of $143 annually, creating a payback of 2.5 years

HVAC Analysis and RecommendationsThe two 200 ton York chillers are nearing the end of their lifespan, and replacement qualifies for Federal tax credits of $.60-1.20 per square foot of the buildings they service (Energy Policy Act of 2005).At 51,608 sq ft., the Herberger building would qualify for $30,965 to $61,930 in rebates to replace chillers Projects servicing areas less than 100,000 sq ft. with electricity rates greater than .07 per kWh and usage hours above 5,000 per year are ideal candidatesEliminates the use of R11 and R12 refrigerants, which contain CFCs that harm the ozone (banned from production in 1996, though quantities still available)

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