here - Spotswood School District

Savings MethodologyIn general, savings calculations for lighting retrofits are calculated using the followingmethodology:Savings Calculation MethodBaseline EnergyUsage (kWh/yr)Estimated EnergyUsage (kWh/yr)Energy Savings(kWh/yr)= Existing Fixture Watts x Operating Hours/yr x 1 kW/1000 Watts= Proposed Fixture Watts x Op. Hours/yr x 1 kW/1000 Watts= Baseline Energy Usage – Estimated Energy UsageMaintenance RequirementsLighting will need to be replaced in order to provide consistent light quality throughout theexterior space. It is recommended to conduct group re-lamping on regularly scheduled intervalsin order to minimize maintenance requirements.Benefits• Electric energy savings• Improved exterior light quality• Reduction in maintenance of exterior lighting system• Improved safety around school perimeterExterior Lighting UpgradesFIM SummaryExisting high intensity discharge (HID) exterior fixtures installed on the buildings throughout theDistrict may be replaced with newer technology LED type fixtures. The newer technologyfixtures have a much longer life and improved light quality throughout the entire life of the lampthan the existing HID lamps. The installation of photocell control will allow the light fixtures toturn on when needed and remain off if possible. This will provide energy savings as well asprovide a safe environment around the exterior of the buildings.Facilities Recommended for this Measure• Spotswood High School• Memorial Middle School• Appleby Elementary School• Schoenly Elementary School© 2011, Johnson ControlsDo not copy (physically, electronically, or in any other media)without the express written consent of Johnson Controls.90