1

Limestone County School District Energy Update

Limestone County School District Energy Update

Year Eleven ReportSeptember 2008 – August 2009

2

Primary GoalsEnergy Management

Program

Primary GoalsEnergy Management

Program Eliminate Energy Waste

Audit buildings during unoccupied times. Monitor building usage during occupied times Track & analyze consumption for building efficiency Use web-based tools & diagnostic loggers to track waste Maintain energy policy and guidelines

Save Dollars Minimize consumption and demand charges Audit and monitor utility bills & meters for errors or

overcharges (i.e. recovered over $40,000 YTD) Evaluate usage trends for abnormalities

Maintain Comfort & Safety in Occupied Areas 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-102002-1554)

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 Districtimpacting energy usageChanges in the Districtimpacting energy usage

Increased Energy Unit Costs Electrical 61.8% Natural Gas 75.8% Water & Sewer 178.9% Propane 160.4%

Increased Square Footage 363235 Sq ft Includes 3 new gyms (all with AC) New classroom wings @ Owens/Clements/West Enlarged lunchrooms @ Clements/East Doubled the size of Johnson Two New Schools (Creekside and Cedar Hill) Additional Portable Classrooms

Increased Mechanical Equipment Tons new AC added, including AC for 4 existing

gyms Additional heating load Computers added (annual) Lighting load

7

Utility Cost Comparison (Year Eleven - 12 Months)

Compared to Base & Projected Utility Costs

Utility Cost Comparison (Year Eleven - 12 Months)

Compared to Base & Projected Utility Costs

$886,762

$2,140,632

$1,578,148

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

Electric

Dol

lars

Base Year Projected Cost Actual Cost

8

Utility Cost Comparison (Year Eleven - 12 Months)

Compared to Base & Projected Utility Costs

Utility Cost Comparison (Year Eleven - 12 Months)

Compared to Base & Projected Utility Costs

$174,762

$287,179

$166,657

$0

$50,000

$100,000

$150,000

$200,000

$250,000

$300,000

Propane

Dol

lars

Base Year Projected Cost Actual Cost

9

Utility Cost Comparison (Year Eleven - 12 Months)

Compared to Base & Projected Utility Costs

Utility Cost Comparison (Year Eleven - 12 Months)

Compared to Base & Projected Utility Costs

$77,399

$41,195

$241,928

$285,554

$223,634

$135,535

$0

$50,000

$100,000

$150,000

$200,000

$250,000

$300,000

Gas Water&Sewer

Dol

lars

Base Year Projected Cost Actual Cost

10

Average Unit Cost Comparison (12 months)Average Unit Cost

Comparison (12 months)

$0.08

$0.13

$0.00

$0.04

$0.08

$0.12

$0.16

Electricity

Cen

ts (

Kw

h)

Base Yr 11

$0.83

$1.47

$0.00

$0.25

$0.50

$0.75

$1.00

$1.25

$1.50

$1.75

Natural Gas

Cen

ts (

CC

F)

Base Yr 11

11

Average Unit Cost Comparison (12 months)Average Unit Cost

Comparison (12 months)

$1.73

$4.90

$0.00

$1.00

$2.00

$3.00

$4.00

$5.00

Water/Sewer

Dol

lars

K G

al

Base Yr 11

12

Average Unit Cost Comparison (12 months)Average Unit Cost

Comparison (12 months)

$0.69

$1.80

$0.00

$1.00

$2.00

Propane

Dol

lars

Gal

Base Yr 11

13

ConsumptionComparison (12 Months)

ConsumptionComparison (12 Months)

11,351,008.00

16,738,643.00

12,483,567.00

0.00

5,000,000.00

10,000,000.00

15,000,000.00

Mil

lion

s of

kW

h

Base Projected Yr11

Electric – Yr 11 Twelve Months

14

ConsumptionComparison (12 Months)

ConsumptionComparison (12 Months)

Natural Gas - Yr 11 Twelve Months

193,098

49,328

152,333

0

50,000

100,000

150,000

200,000

250,000

CC

F (

thou

san

ds)

Base Projected Yr 11

15

ConsumptionComparison (12 Months)

ConsumptionComparison (12 Months)

53,336

27,667

44,058

0

20,000

40,000

60,000

80,000

100,000

(KG

als)

Base Projected Yr 11

Water & Sewer – Twelve Months

16

ConsumptionComparison (12 Months)

ConsumptionComparison (12 Months)

Propane - Yr 11 Twelve Months

159,282

252,435

92,645

0

50,000

100,000

150,000

200,000

250,000

300,000

CC

F (

thou

san

ds)

Base Projected Yr 11

17

Monthly/Cost Avoidance(12 Months)

Monthly/Cost Avoidance(12 Months)

$0

$100,000

$200,000

$300,000

$400,000

$500,000

$600,000

$700,000

$800,000

Sep

-08

Oct

-08

Nov

-08

Dec

-08

Jan

-09

Feb

-09

Mar

-09

Ap

r-09

May

-09

Jun

-09

Jul-

09

Au

g-09

Dol

lars

K

Monthly Savings as Percentage

18

Environmental BenefitsEnvironmental BenefitsThe 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. 2008- Aug 2009 (Twelve-Months)

Summary Sept. 2008- Aug 2009 (Twelve-Months)

Anticipated Costs Without Energy ProgramActual 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 wings @ Owens/Clements/West

Enlarge lunchrooms @ 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..