residential energy efficiency workshop

University of Dayton

- Building Energy Center

U.S. Department of Energy

• Typical Residential Energy Use

• How Much Can You Save?

• How Can You Save?

• Free Savings

• Cheap Savings

• Investment Savings

• How Do You Stack Up?

• Energy Use Analysis

0

500

1,000

1,500

2,000

2,500

Northeast Midwest South West

Dollars

($)

US Region

$2,200

Typical Midwest Home

Based upon $2,200 typical energy use per year

Space Heating: $990

Water Heating: $396

Space Cooling: $198

Electronics: $132

Lighting: $132

Other: $110 Appliances: $240

0

500

1,000

1,500

2,000

2,500

Dollars

($

)

$580

• Heating: 3% savings per

degree change

• Vectren rebate: $20!

Savings up to $150

a year!

Occupied

Unoccupied & Nighttime

• Cooling: 6% savings per

degree change

Up to $200 a year!

Occupied

Unoccupied

• 3-5% savings per 10

degrees of change

• If replacing:

• Vectren rebate of $150

Save up to $50 per year!

• Simple, easy, & free

• Make it a fun competition!

• Save via:

• Water

• Water heating energy

Save $30 per person!

• Example:

•10 - 60 W bulbs

•On for 4 hours every day

• For one year

• Costs $88 per year

• Just 10 lights…

Save $100 per year!

• Versus a modern refrigerator:

• 10-20 year-old-fridge: 2 times as much energy

• 30 year-old-fridge: 3 times as much energy!

• DP&L will recycle for you and give you $25!

Save $250 per year!

• Hot/warm water isn’t necessary to clean your clothes

• Just by using a different detergent

Save $75 per year!

• Low flow faucets

• Kitchen & Bathroom

• < 1 gallon per minute

• Cost: $5 each

• Save via:

• Water

• Water heating energy

Save $10 per faucet!

• Low flow showerhead:

• < 1.25 gpm

• Cost: $20

• Save via:

• Water

• Water heating energy

Save $20 per shower!

• Phantom load account for 10% of household electrical use

• Solution: Smartstrips - Cuts power when not in use

• Cost: $10-30

Save $30 per smartstrip!

Save $45 per bulb!

(assuming $0.10/kWh)

Incandescent CFL LED

Cost per bulb $1.00 $3.00 $10.00

# of bulbs for 2 years 15 2 1

Total Cost for 2 years $120.12 $30.53 $27.52

DP&L rebate: $1.40 off each CFL bulb

• Seal up air leaks before adding

insulation

• Why?

• Decrease infiltration

• Improve comfort

Cost: $300-500

Save up to $230 per year!

• Leaky and uninsulated ducts common

in older homes

• Savings in heating and cooling season

• Cost per square foot of ductwork:

• Seal: $0.20

• Insulate: $0.50

Save $200 per year!

• Older homes often do not have much

attic insulation

• Saves money and drastically

improves comfort

• Cost: $0.60 - $2.00 / square foot

Save up to $250 a year

• Basement or crawlspace

• Your floor may not be insulated

• Added comfort

• Cost: $5/per square foot

Save $200 annually!

• Concrete slab

• Lots of energy lost through

uninsulated slab

• Cost: $10 per foot

Save up to $600 per year!

$0

$50

$100

$150

$200

$250

$300

$350

$400

$450

Sa

vin

gs

($)

Heating System - Year Made

1960-1969

1970-1974

1975-1987

1988-1991 < 1992

$471 $333 $286 $180 $157

Annual Savings

• There are both Vectren and DP&L rebate programs for heating system upgrades

Save up to $470 per year!

Annual Savings

0

20

40

60

80

100

120

140

160

Sa

vin

gs

($)

Cooling System - Year Made

1960s

1970s

1980s

1990s

2000s

$145 $105 $65 $40 $20

• DP&L rebate program for cooling system upgrades

Save up to $145 per year!

In comparison to

average

On your own at dropoly.com Or at the end of the session

Bart Sturm

University of Dayton

Building Energy Center

Renewable and Clean Energy Masters Program

Email: sturmbap@gmail.com

Dr. Kevin Hallinan

Professor – Mechanical & Aerospace Engineering, &

Renewable and Clean Energy Graduate Program

• "Energy Savers: Energy Savers Guide: Tips on Saving Money and

Energy at Home.“ Department of Energy. December 2011

• "Unlocking Energy Efficiency In The U.S. Economy." McKinsey &

Company. July 2009

• US EIA: Residential Energy Consumption Survey (2005 & 2009)