Energy & AtmosphereLEEDing The Way to a Brighter Future at the IMU

Take the Extra StepInstall on-site

renewable energy sources

Metering towards Energy Improvements

H o w m u c h ? What? Where? When? Why?

Reasonable Reasons to Replace Old Equipment

Deferred MaintenanceCreate a Plan that Replaces Aging Refrigeration

Units with Energy Star Products on a Semi-Annual Basis

Use the Deferred Maintenance Costs & Direct Cost-Savings to fund the Replacement

Cost-Savings

Green Lights (2000)Installed 2159 electronic ballasts

and 3869 T-8 style fluorescent lamps for better efficiency.

Electricity: 247,557 kWh/yr Annual Savings: $20,547

DDC Retrofit of AHU (2000)Installed DDC controls on AHU-1

to replace pneumatic ones.Electricity: 38,491 kWh/yr

Steam: 290 MLB/yrChilled Water: 715 MMBtu/yr

Annual Savings: $22,570

*University of Michigan Cook W Research Library

The IMU can expect to save up to $170 annually per refrigerator and $120 per freezer in energy costs alone

(an energy savings of up to 35%)

Stage 1 "Green

Lights"

Stage 2Buildin

g Mechanical

System Tune-

up

Stage 3

(HVAC)

Load Reduction

Stage 4

HVAC Distri

bution Improvements

Stage 5

HVAC Plant Improvements

University of Michigan: Energy Saving Initiative

End of the program: Estimated $5.7 million annual savings.

Project Costs Millions Per YearGreen Lights Retrofit Measures $1.9 (over 5 years)Energy Conservation Measures $1.1 (over 6 years)Tune-up Personnel $0.6 (over 6 years)Tune-up Materials $0.4 (over 6 years)Engineering Support Staff $0.4 (over 6 years)

 

Nov-08 Dec-08 Jan-09 Feb-09 Mar-09 Apr-09 May-09 Jun-09 Jul-09 Aug-09 Sep-09 Oct-090

100000

200000

300000

400000

500000

600000

700000

Usage Trend Comparison (kWh) – UMU vs. IMU

UMU (kWh) IMU (kWh)

KWh/

mon

th

Although more consistent, the IMU’s kWh usage is not a result of systemic approach to energy management …ROOM FOR SAVINGS!

UMU IMU

Avg (kWh) 405,000 565,000

Std Dev (kWh) 54,000 36,000

– Phased Retrofits

– Hybrid High Cost/Low Cost Replacements

–Direct Utility Savings

–Deferred Maintenance ($)

– Performance Contracting

–Federal & State Grants (e.g. DSIRE, EERE)

Financing Energy Improvements

Being More than “Less Bad”

Oberlin replaced >50% of it’s coal use7 yr payback (energy savings)

4 year payback (CO2 reductions)

Ren

ew

ab

le E

nerg

y &

Hig

h E

fficie

ncy

Energy Efficiency & Performance Achieved through Energy Star’s performance rating LEED requires an energy performance rating of 69 >50% of Energy & Atmosphere LEED credits (15 pts) The higher the rating the higher the credits

Renewable Energy Recommend Solar Need 3% per point PV covered parking