1 Limestone County School District Energy Update Year Eleven Report September 2008 – August 2009

2 Primary Goals Energy Management Program n Eliminate Energy Waste r Audit buildings during unoccupied times. r Monitor building usage during occupied times r Track & analyze consumption for building efficiency r Use web-based tools & diagnostic loggers to track waste r Maintain energy policy and guidelines n Save Dollars r Minimize consumption and demand charges r Audit and monitor utility bills & meters for errors or overcharges (i.e. recovered over $40,000 YTD) r Evaluate usage trends for abnormalities n Maintain Comfort & Safety in Occupied Areas r Coordinate usage of facilities and monitor operational efficiency of equipment vs. design.

3  Measurement and verification (M&V)" is the terminology commonly used to describe the practice of measuring energy savings and verifying cost avoidance. Energy CAP 's Cost Avoidance module is an M&V tool.  The U.S. Department of Energy recently headed an effort to develop a written standard to define and describe various M&V options. Energy CAP is considered an "Option C -- Whole Building" method of M&V under this standard.  The standard, called the International Performance Measurement & Verification Protocol is U.S. Department of Energy document (DOE/GO )  Energy CAP is an independently owned and developed software product in full compliance with this government standard.  Your School district is a licensed User of the software tool. Measurement and Verification (M&V) Methods

4  Measurement is based on “Consumption” comparisons between the base period and the current billing cycle (meter-by-meter).  All financial/Economic values are based on current cost of energy (I.e. energy savings for a given month use the actual unit cost of energy (for that month) to determine the savings/loss for an accounting period). Savings is never based on past “historical” energy prices.  Adjustments for “load” changes such as added/removed mechanical systems, new technology, increased building square footage and portable building additions are determined by the district Energy Educator/Manager through inventory assessment. The net increase or decrease to building loads are entered into the software to determine projected increase or decreased costs. Measurement and Verification (M&V) Methods

5 Comparing Apples to Apples  Changes in Weather  Changes in Building Square Footage  Special Adjustments (changes in equipment or programs) The accounting program adjusts the Base Year consumption to reflect these changes and an Apples to Apples comparison is achieved. In order to make a valid comparison between consumption in the Base Year and consumption in a Savings Year certain criteria must be taken into account.  Differences in the length of the Billing Periods

6 Changes in the District impacting energy usage n Increased Energy Unit Costs r Electrical 61.8% r Natural Gas 75.8% r Water & Sewer 178.9% r Propane 160.4% n Increased Square Footage r Sq ft r Includes 3 new gyms (all with AC) r New classroom Owens/Clements/West r Enlarged Clements/East r Doubled the size of Johnson r Two New Schools (Creekside and Cedar Hill) r Additional Portable Classrooms n Increased Mechanical Equipment r Tons new AC added, including AC for 4 existing gyms r Additional heating load r Computers added (annual) r Lighting load

7 Utility Cost Comparison (Year Eleven - 12 Months) Compared to Base & Projected Utility Costs

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10 Average Unit Cost Comparison ( 12 months )

11 Average Unit Cost Comparison ( 12 months )

12 Average Unit Cost Comparison ( 12 months )

13 Consumption Comparison ( 12 Months ) Electric – Yr 11 Twelve Months

14 Consumption Comparison ( 12 Months ) Natural Gas - Yr 11 Twelve Months

15 Consumption Comparison ( 12 Months ) Water & Sewer – Twelve Months

16 Consumption Comparison ( 12 Months ) Propane - Yr 11 Twelve Months

17 Monthly/Cost Avoidance (12 Months)

18 Environmental Benefits The EPA estimates that every kilowatt-hour (kWh) of electricity use avoided prevents the emission of the following: 1.5 pounds of carbon dioxide 5.8 grams of sulfur dioxide 2.5 grams of nitrogen oxides. Our District has saved/avoided over 4,255,076 kWh in a 12 month period. These savings are equal to: 6,382,614 pounds of carbon dioxide emissions being prevented, or 966 automobiles being removed from the highways annually, or 1277 acres of trees being planted.

19 Summary Sept Aug 2009 (Twelve-Months) Anticipated Costs Without Energy Program Actual Base Year Costs $1,179,351. Rate Changes (Increase) $799,688. Weather $22,133. Added 375,909 Sq/ft $658,480. Includes 3 New Gyms ( all with A/C ) Added classrooms Owens/Clements/West Enlarge Clements/East Doubled the size of Johnson Two New Schools (Creekside & Cedar Hill) Tons new AC added for old gyms (etc). Total Anticipated Energy Costs $2,955,293. Actual Tenth Year Costs $2,103,974. Cost Avoidance $850,124..