Energy Analytical Models: A Holistic Energy

Assessment Technique

Doug Dixon

Pacific Northwest National Laboratory

20 June 2007

Fort McPherson/SERO HQ

Fort Gordon

Fort Stewart

Hunter Army Airfield

Fort Buchanan

Fort Campbell

Fort Knox

Redstone Arsenal

Fort Benning

Fort Rucker

Anniston AD

Fort Gillem

Milan AAP

Holston AAP

Mississippi AAP

Blue Grass AD

Fort Bragg

MOT Sunny Point

KY

TN

MS AL GA

FL

NC

PR

SC Fort Jackson

United States Army Garrison - Miami

Agenda

Army SE Region Energy Performance Energy Modeling/Assessment Results

at SE Region Installations What is the Facility Energy Decision

System (FEDS)? Other applications of FEDS

SE Region Glide Path Performance(through FY 2006)

Southeast Region Energy Reduction Glide Path

70

75

80

85

90

95

100

105

110

115

2000 2005 2010 2015

MM

Btu

/ksf

30% Reduction From 2003 by 2015

SERO Actual

3.7% Annual Reduction Required to Meet Goal

SERO Installation Energy Assessments

SERO conducted comprehensive installation energy assessments using the Facility Energy Decision System (FEDS) software.

Specific goals of these assessment were:

Establish baseline for installation energy consumption and costs.

Identify and prioritize cost-effective energy projects for funding via third party financing (ESPC, UESC, BPA), and/or government funding (ECIP, OMA).

Estimate impact on energy demand and consumption from new building construction, demolition, renovation, utility modernization, O&M, and energy-specific retrofits.

Provide input for Installation Long-Range Energy Management Plan.

FEDS General Approach Collect information on building inventory, energy-related

infrastructure, energy consumption and prices

Sort building inventory into groups with common characteristics and audit representative buildings (typically 25-30 buildings)

Characterize central energy plant and thermal distribution system performance

Utilize Facility Energy Decision System (FEDS) building energy model to calculate energy consumption of building groups

Calibrate the model to actual energy use using actual weather data

Utilize the model to predict energy use impact of infrastructure changes, and identify life-cycle cost effective retrofits using typical weather data (TMY).

SE Region FEDS Results

Installation Report Installed Cost Annual Savings Energy Savings SIR PaybackDate ($) ($/year) (MMBtu/year)

Redstone Sep-04 $26,321,875 $4,921,051 267,879 3.34 5.35Jackson Jul-04 $8,699,411 $1,543,561 130,743 3.06 5.6Benning Sep-04 $13,509,084 $2,129,752 254,350 2.7 6.3Buchanan Jan-05 $5,540,791 $954,019 31,390 2.97 5.8Knox Jun-04 $21,387,505 $3,239,873 342,808 2.7 6.6Stewart Apr-04 $6,894,191 $1,176,844 118,675 3 5.9Hunter AAF Apr-04 $2,957,572 $827,727 44,173 4.8 3.6Campbell Apr-04 $25,010,385 $3,230,739 221,692 2.3 7.7Gordon Feb-05 $8,745,217 $1,326,014 152,928 2.52 6.6Bluegrass Jan-05 $1,948,710 $285,502 22,302 2.68 6.8McPherson Apr-04 $4,471,461 * 50,905 2.65 *Gillem Apr-04 $2,958,995 * 40,971 1.73 *Bragg Jan-05 $17,932,191 $3,379,533 323,732 3.2 5.3Anniston Jun-05 $5,424,137 $710,631 51,075 2.1 7.6Sunny Point Jan-05 $181,881 $35,871 1,280 3.2 5.1Totals $151,983,406 $23,761,117 2,054,903

*Annual Savings and Payback not available for McPherson and Gillem

FEDS Opportunities FEDS run for both appropriated funding and

alternatively-financed projects.

Retrofit Type

Energy Savings (Million Btu/yr)

Annual Savings ($/yr)

Installed Cost ($)

Net Present Value ($)

SIRSimple

Payback (yr)

Envelope Total 237,316 2,497,275 15,113,057 31,263,664 3.08 6.05

Cooling 20,846 238,641 1,359,744 1,365,509 3.07 5.70

Heating Total (27,345) 856,949 3,778,066 8,603,448 4.09 4.41

Hot Water Total 5,674 207,464 433,289 2,030,256 7.96 2.09

Lighting Total 30,986 1,114,801 5,575,723 13,858,293 3.47 5.00

Motors Total 402 5,921 61,996 5,180 1.10 10.47

Grand Total 267,879 4,921,051 26,321,875 57,126,350 3.34 5.35

Alternative Financing Total

164,102 4,195,856 14,901,857 28,251,922 2.87 3.55

Summary of Potential Energy and Cost Savings for Redstone Arsenal Using Appropriated Source of Capital

16%16%10%10%

White Sands Missile Testing Center

Fort Sill

Fort BlissFort Hood Fort Polk

Pine Bluff Ars

McAlester AAP

Red River ADLone Star AAP

Camp Stanley Storage Actv

Louisiana AAP

Fort Sam Houston

Corpus Christi AD

Presidio of Monterey

Fort Irwin

Yuma Proving Ground

Fort Hauchuca

Riverbank AAP

Sierra Army Depot

Hawthorne AD

Fort Hunter Liggett (USAR)

FEDS Assessments Completed FEDS Assessments Completed at Army Installationsat Army Installations

Natick R & D Ctr

Devens RFTA (USAR)

Fort McPhersonFort Gordon

Fort Stewart/Hunter AAF

Fort Jackson

Fort Buchanan

Fort Benning

Fort RuckerFort Gillem

Mississippi AAP

Fort BraggMOT Sunny Point

NERO

SWRO

Fort Shafter

Schofield Barracks

Fort Wainwright

Fort Richardson

Ft. GreelyPARO

Tokyo/YokohamaAkizuki/KureZama/Sagamihara

Okinawa Kwajalein

Detroit Ars

USAG Selfridge

Lima Army Tank Plt

Fort McCoy (USAR)

Fort Leonard Wood

Fort RileyFort

Leavenworth

Iowa AAP

Kansas AAP

Lake City AAP

Dugway Proving Ground

Pueblo Depot

Fort CarsonTooele AD

Deseret Chem Depot

Fort Lewis

Yakima TrainingCenter

Umatilla Chem Depot

Rock Island Arsenal

USAG Miami

Moffett FieldRFTA (USAR)

Fort Drum

Fort MonmouthPicatinny Arsenal

Watervliet ArsFt. Hamilton

Fort Dix (USAR)

West Point

Fort Belvoir

Aberdeen Proving Ground

Fort StoryFort Lee

Fort EustisFort Monroe

Ft. AP Hill

Radford AAP

Letterkenny AD

Carlisle Barracks

Fort McNairFt. Meade

Fort Myer

Walter Reed

Ft Detrick

Tobyhanna Army Depot

Adelphi Lab Ctr

Scranton AAP

SERO

NWRO

Parks RTFA

FEDS Completed

Redstone ArsenalAnniston AD

Holston AAPFort Campbell

Fort Knox

Milan AAP

Blue Grass AD

Facility Energy Decision System

An Overview of

FEDS - What is it?

FEDS is a fuel-neutral, technology independent, comprehensive method for quickly and objectively identifying building energy efficiency improvements that offer maximum savings

Why was FEDS Developed?

Large military bases needed a tool to help them determine where their energy was going and what energy opportunities existed Bases had:

– hundreds and often thousands of buildings, and usually only one meter

– little detailed engineering information on individual buildings

– limited understanding of utility information Key elements missing in existing software

programs

FEDS Design Goals FEDS was designed with two major purposes in

mind: estimating current energy consumption for all energy

systems under consideration determining the minimum life-cycle-cost retrofits to

systems within a facility and on an installation (considering all interactive effects) and includes estimating:

– pre- and post-retrofit consumption– first cost of the retrofits– recurring O&M costs for the retrofits– value of the change in annual energy consumption and annual

O&M requirements– net present value of the retrofits

Peak tracking

Life-cyclecost

optimization

Technology & fuel

independence

Financial options

FEDS is

A FEDS CaseInstallation Information

Building Set Records

End Use Inputs

Technology Records

FEDS Building Types

Civilian: Assembly Education Food sale Food service Health care Lodging Mercantile service Office Public Order Warehouse/storage Other building Single family detached Single family attached Mult. Units 2-4 Mult. Units 5 or more Mobile Home

Military:AdministrationBarracksChapelClinicClubCommissaryDining hallElectronicsExchangeHangarHospitalHotelLabLaundryMorale,welfare &

recreationOther

Production/process

Recreation

Schools/training

Security

Shops

Storage

Warehouse

Single family detached

Single family attached

Duplex

Mult.unit 3+

Single family mobile

Special: Commissary - Sales Commissary - Warehouse

Guidance for Developing Building Sets

Always: Type Size (sf) Age (yr) Fuel

Availability

As Applicable: Operation/occupancy Envelope Lighting Heating Cooling Ventilation Service hot water Miscellaneous equipment Motors

FEDS Required Inputs

Installation and Financial Information Location and Analysis Year Energy Price Data Cost of Money (if not DOE/EIA)

Building Information Type, Age, Size, and Quantity Operating Hours Equipment (Lights, Heat, Cool, Hot Water)

FEDS Results

Energy consumption: total, by fuel type, by end use, by building set, by central plant

Suggested retrofits: specific technologies to install and replace, capital cost, energy and cost savings, net present value

Peak demand: amount and time, for installation and by building set

Emissions: by pollutant type, by building set

Report Options A summary report of the energy, demand,

dollar, and air pollution emissions impacts for the installation, central plants, and building sets (*.txs)

A detailed retrofit report (*.txd) A detailed spreadsheet of retrofit data (*.csv) An Energy Conservation Investment Program

report (*.ecp) – for single retrofits only (no bundling)

Other FEDS Uses

Evaluate alternative sustainable building designs

Analyze fuel switching Value “deals” Assess impacts of change Apportion reimbursable customers Central plant and thermal loop

analysis (optimize amount of decentralization)

Building Design Evaluation

Use FEDS to assess the impact of building designs during the design review stage. FEDS can indicate the impact the new building(s) will have on your facility (energy and dollars), and it can indicate energy efficient retrofit technologies before the design goes to construction.

Facility Energy Decision System