benchmarking wastewater treatment plant energy use with energy star’s portfolio manager tool

Benchmarking Wastewater Treatment Plant Energy Use with ENERGY STAR’s Portfolio

Manager Tool

Jason TurgeonUS Environmental Protection Agency

4/30/2009

Maximum Ozone Levels in 2007

Image: USAF Defense Meteorological Satellite Program

Industry Average O&M BudgetsWastewater Plant

staffing46%

Chemicals 4%

maintenance3%

Other7%

solids12%

energy28%

Hartford WPCF Energy Cost vs. Use

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

Cost, millions

BTUs, 10 1̂1

New Regulations May

New Regulations May

Drive Energy Use

Drive Energy Use

Successful Energy Management

www.energystar.gov/benchmark

Portfolio Manager

What Does it Do?

Single Parameter ComparisonsWastewater Treatment Plants

AwwaRF Survey, 2004 Data, 300 observations

0

10

20

30

40

50

60

0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450

Annual Energy Cost ($/MG)

Nu

mb

er

of

Pla

nts

Wastewater Treatment PlantsAwwaRF Survey, 2004 Data, 279 observations

0

5

10

15

20

25

30

Annual Electricity Use (kWh/MG)

Nu

mb

er

of

Pla

nts

Courtesy WEF/Steve Carlson

Energy Use per Flow vs. Facility Size

0

5

10

15

20

25

30

35

40

0.0 10.0 20.0 30.0 40.0 50.0 60.0

Facility Size (Average MGD)

Sou

rce

Ene

rgy

Use

d to

Tre

at 1

Gal

lon

per

Day

(kB

tu/G

PD

)

Higher Energy use than average = Low Score

Average Energy Use = Average Score (50)

Lower Energy Use than Average = High Score

Normalization: lineposition adjusted

Energy Use and Cost vs Flow at similar sized plantsFY 2006 data

$124 $131

$242

$202

$315

$409

0.0

2.0

4.0

6.0

8.0

10.0

12.0

2.3 1.9 1.7 1.9 2.1 2

Average Daily Flow (MGD)

kBtu

/GP

D

$0

$50

$100

$150

$200

$250

$300

$350

$400

$450

$/M

GD

Source Energy per Flow(kBtu/GPD)

Energy Cost per MG ($/MG)

Plan

ENERGY PERFORMANCE RATING

MAINTAIN

INVEST

10075501

ADJUST

Now What?

Do

Do!

DO!!!

Check

Act

Photo CreditsSome photos used under Creative Commons licenses. Thanks to the following flickr users:•The End is Near: Delayed Gratification •Pile of Money: noahwesley•Fear of Commitment: Leslie Duss•Inspection: kquedquest •People Looking at Map: threelayercake•Jumping Swimmers: Hidden side •Plumber: NoMoTo•Roller Coaster: Sven Werk•Downward Trend: nogwater •Target: Matthew McVickar •Award: shannonmary•Fine Current Adjustment Dial: thespacesuitcatalyst•Apples and Oranges: rebel prince•Bad Apple: atypically_me•Basketball: sgoogle•Building with Cactus: ralphTQ•Building with Snow: Justin Russell•Calculator: Tube Design•Changed Priorities: redvers•Padlock: Zebble•Dial 1-100: Leo Reynolds•Swiss Army Knife: Kaptain Kobold•Green Jobs in Pittsfield: greenjobsnow.org•Firefighter: djarvinen•Two Tankers: SeraphimC

… …it’s not sustainableit’s not sustainable

If it’s not energy efficient …If it’s not energy efficient …

Contact Us

EPA New England

Jason Turgeon

turgeon.jason@epa.gov

617-918-1637

Gina Snyder

snyder.gina@epa.gov

617-918-1837

www.epa.gov/

region01/eco/energy