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ENERGIZING THE GARDEN An energy analysis and management plan December 21st, 2005

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ENERGIZING THE GARDEN An energy analysis and management plan December 21st, 2005

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    2. Table of Contents

    3. Compost System

    5. Front Office Ceiling Fan (2) Track Lighting (16 halogen lights) Mini Fridge Various electronics Exterior Overhead front lights Walkway 12 Volt halogen system Water Pumps (2) Waterfall Koi Pond

    6. Conservation Plan: Recommendations for Greater Efficiency Motion sensor light activation in bathrooms Signs for energy conservation By simply turning off the lights or the AC when leaving a room, the garden could save hundreds of dollars on electricity bills

    7. Conservation Plan (continued…) Garden expansion lighting in halogen Consider solar trail lights Lower AC thermostat 76-78°F Turn off AC when gone more than 2 hours Check seals on windows/doors Caulk and weatherstrip Shade windows Clean fridge and freezer coils

    9. Green Energy Proposal: Offsetting Carbon Dioxide Emissions through Renewable Energy Purchase energy generated from renewable sources as opposed to non-renewable fossil fuel sources. There are two plans through the Keys Utility Service Florida Ever-Green: Buy renewable energy from within Florida @ 2.75 cents per kilowatt hour. USA Green: Buy renewable energy from somewhere in the US @ 1.6 cents per kilowatt hour. This 2 year program has about ˝ its customers using each plan. More expensive for the Florida plan because only 2.5% of the electricity generating sources are renewable within Florida. The cost of the Florida plan is roughly $30-40 more per month to “offset” 100 % CO2 emissions. The cost for the USA plan is $50-70 more per month.

    10. Green Energy Program: KeysEnergy

    11. Total Garden Electricity Usage and Estimated Green Energy Compliance Costs

    12. Estimated CO2 Emissions from Garden Electricity Use per Month

    13. Assumptions for CO2 Calculations All electricity rates assume a base rate of 8.5 cents per kilowatt hour. The “power correction factor” rate assumes a constant rate of 3 cents per kilowatt hour. This rate normally fluctuates per month and ranges from 2 – 5 cents per kilowatt hour. Even though Keys Energy Services obtains majority of electricity from the mainland, there is a 60 % backup generation system. We will calculate emissions output based on the EPA data for the generation mix for the entire state of Florida. The generation mix is 24 % coal, 21 % nuclear, 37 % Natural Gas, and 18 % Oil for Florida Power and Light. Nuclear power does not emit any CO2 in power generation so we worked with just Natural Gas, Oil, and Coal generation sources. Each source is affected by an “efficiency and transmission” term that compensates for the end use electricity versus the generated electricity. In other words, for coal, it “costs” 0.7 lbs of CO2 per kWh generated. However, by the time you factor in the transmission losses and the thermal efficiency of creating this electricity, it is “costing” the end user about 2.5 lbs of CO2 per kWh. The end result indicates a CO2 emission “cost” of about 1.3 lbs/kWh electricity consumed by the Botanical Garden.

    14. Appliance Estimated Electricity Use Per Month

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