May 22, 2007

Quality Motor Rewinding an Energy Efficiency Measure

Regional Technical Forum Submittal

In today’s energy climate motor service centers and their influence should not

be overlooked

In 1994, electric motor driven systems used 679 billion kWh or 23% of all

electricity sold in the U.S.

Many energy efficient motors are reaching the end of their life and will

need repair

It is time to address this issue

Without attention to controlled motor repair protocol expect

efficiency losses of:

• 1% if the motor is 40 HP or smaller;

• .05% if 50 HP or greater.

With Green Motors protocol expect no efficiency losses

Documents efficiency

unchanged even after

five rewinds

• Requires a controlled process;

• A failure event does NOT affect the motor core.

BUT

NEMA Premium® 5HP, 4 Pole, 3Ø, 89.5% Efficient Motor

100% Power 89.5% Out

Stator Res.

Rotor Res.

IronCore

Friction/Windage

StrayLosses Total

100%

10.5%

5%

.05%1.1%

10%20%

2.1%2.6%

25%

4.2%

40%

Percent ofInput

Percent ofLosses

New Motor losses—what can rewinding affect?

Green Motors Service Centers sign a commitment

to:

• Retain efficiency in the repair/rewind process;

• Base recommendations on total cost of ownership;

• Train personnel, allow GMPG inspection and review;

• Advise customers of catastrophic failures;

• Non-compliant service centers are removed.

HPAverage kWh

savedHP

Average kWh saved

1 16 60 856

1.5 25 75 1097

2 33 100 1456

3 48 125 1771

5 80 150 2116

7.5 146 200 2809

10 196 250 4136

15 291 300 4952

20 385 350 5732

25 573 400 6542

30 686 450 7349

40 909 500 8165

50 573

Deemed Savings Table

Based on conservative variables

HPBuy New Price

Rewind Existing

PriceSavings

15 $851 $598 $253

50 $2,289 $1,242 $1,047

100 $5,049 $2,021 $3,028

HP

An Average or “Good Enough” Rewind

Green Motors

Practices Rewind

Annual Savings with a Better

Rewind

15 $5,422 $5,304 $117

50 $17,662 $17,288 $374

100 $34,797 $34,250 $547

Energy Costs (based on $.05 Per kWh) Non-Energy Benefits

High quality motor repair estimated savings

NEMA Premium® and GMPG protocol is in the best interest of consumers, utilities, and motor service centers

Green Motors Practices

member locations

Widespread and growing

Green Motors Practices Logic Model

Sample Incentive Application(Runtime database)

Unique identifier (also appears on motor)

Consumer information

Quantifiable savings data

Test results report reinforces protocol

Third party oversight

• Retains efficiency;• Is cost effective;• Reaches even custom made motors;• Will lead to uniform utility programs;• Bolsters the bottom-line of commercial, agricultural, and the industrial community;• Is virtually “plug-and-play” and;

• Is an energy efficiency measure

The Green Motors Practices Group: