Harwood Union High School Board of Directors Presenters: Gabriela Meade and Lorne Nix Presented: April 25 th, 2007 Vermont Energy Education Program

 Our goal is to make Harwood more environmentally friendly as well as making it a model from which the community can learn.  It began as a Green School Audit in our Creating Sustainable Communities Class in October, 2006 and since then we have put in over 100 hours of our own time.  We have been very fortunate to work with several community partners including; Lauren Mattison from Efficiency Vermont, Andy Shapiro from the Vermont Energy Education Program and Tracy Holden, our Facilities Manager. Without their help this project would not have been possible. Project Introduction

How Compact Fluorescents Work…   The central element in a fluorescent lamp is a sealed glass tube. The tube contains a small bit of mercury and an inert gas, kept under very low pressure. The tube also contains a phosphor powder, coated along the inside of the glass.   When the electric current creates an arc in the bulb it excites the gas. Causing the atoms to bounce around the inside of the tube. Every time an atom hits the powder coated side a photon (light) is released.   When you have a tube of smaller diameter the bouncing of the atoms increases in number. Meaning more light is emitted, allowing the energy put into the tube to be decreased but still have the same amount of light.

Our Proposal Includes:  Replacing all T-12’s with Super T-8’s  Installing Occupancy Sensors  Replacing Metal Halide Lights in Main Gym and Multipurpose Room with T-5’s Estimated Installation Cost:$70, Estimated Efficiency Vermont Incentive: TBD Net Cost: TBD First Year Savings: $7, Simple Payback: 10 Years Simple Rate of Return on Investment: 10% Proposal Overview

Lighting As A Part of Our Energy Consumption Current Proposed

Current and Proposed Lighting Proportions Current Proposed

Current and Proposed Energy Proportions Current Proposed

1,602 T-12’s Bulbs…  Consume 66 kWh  Cost $5.43 per hour  Cost $46.19 per 8.5 hour day  Cost $8, per 180 school year 1,602 Super T-8’s…  Consume 38 kWh  Cost $3.18 per hour  Cost $27.04 per 8.5 hour day  Cost $4, per 180 day school year T-12’s to Super T-8’s

Energy and Cost Savings for Replacing T-12’s Without Occupancy SensorsWith Occupancy Sensors $3, Reduction/Year$4, Reduction/Year

Energy Reduction in Main Gym and Multipurpose Room $ Reduction/Year$ Reduction/Year Multipurpose Room Main Gym

Environmental Effects  In Vermont, an average of 1.3 pounds of CO 2 is emitted per kWh of energy produced  Our current lighting situation consumes about 262,264 kWh annually  This means we emit 340,944 pounds of CO 2 every year  Our proposal reduces this by over 122,000 pounds of CO 2

To Achieve The Same Effect You Could…  Move almost 1770 drivers from large SUVs to hybrids for ten years; or,  Run twelve 600 kW wind turbines for ten years; or,  Protect 488 acres of tropical rainforest from deforestation; or,  Install 15,250 solar panels in India; or,  Replace 244,000 refrigerators with the highest efficiency models.

Other Advantages  Brighter light levels and quality  Lights in Multipurpose Room and Gym will turn on automatically, which will enable people to turn them off when they are not in use for short periods of time.  Lower maintenance resulting in significantly reduced operating costs  Improved efficiency  Reduced environmental impact

Thank You! Questions?