ENERGY STAR®

ENERGY STAR Refrigerators and FreezersRichard H. Karney, US DOE

July 18, 2001

Review of

Analysis Methodology

• Why expand?

•Industry/Utility/Consumer interest

•New Models Available

•Provide motivation to increase product efficiency

•Provide more efficient option for common household purchase

Expansion of Coverage and Eligibility

Current Refrigeration Spec

• Standard size refrigerators only

• >12.5 ft3 for top-mount freezer

• >18 ft3 for side-by-side, bottom

• Initial specification intended to include most common sizes

Proposed Addition to Specification Coverage

• Mid-sized refrigerators

• 6.5 to 18.5 ft3, all configurations

• Freezers (manual & auto)

• All residential sizes

• Compact refrigerators/freezers

• < 6.5 ft3

• Manual & partial defrost

• All sizes

Proposed ENERGY STAR Levels for Expansion

• 10% below NAECA standard• No change• Maintain consistency with current

specification• Consistency aids consumer

understanding

• Exception• Compact refrigerators/freezers• 20% below NAECA proposed

Mid-size Refrigerators: Market Overview

• Estimated annual sales: 1.9 million

• Top mount freezer most common

NAECA and ENERGY STAR: Mid-size

Top Mount Freezer Performance vs NAECA

250

300

350

400

450

500

550

5.50 10.50 15.50

Size (ft3)

kWh

/yr

Top Mount FreezerPerformance

NAECA Points

Energy Star Points

Current AveragePerformance

NAECA Standard

Proposed Energy StarLevel (10%)

Proposed ENERGY STAR Level:Mid-sized Refrigerators

• 10% below NAECA standard

• Consistent with current speciation

Compacts: Market Overview

• Annual Sales: 2.4 million

• Mostly Manual Defrost

• Sales Volume Doubled in Last Five Years

NAECA and ENERGY STAR: Compacts

Small Refrigerator Efficiency by Volume

250

270

290

310

330

350

370

390

1.00 2.00 3.00 4.00 5.00 6.00

Adjusted Volume

kWh

/yea

r

kWh/year

Federal Minimum Standard

Proposed 10% ENERGY STAR level

Proposed 15% ENERGY STAR level

Proposed 20% ENERGY STAR level

Proposed ENERGY STAR Level: Compacts

• 20% below NAECA standard

• Why not 10%?• 20% created better

differentiation

• Greater energy savings

Freezers: Market Overview

• 2 million units/year sales

• 36 million unit stock• 1 in 3 households

• Two manufacturers have 99% of market

NAECA and ENERGY STAR: Upright Freezers

Upright Manual Defrost Freezer Performance

(AHAM-2001*)

200

300

400

500

600

700

3 8 13 18 23

Size-ft 3

kWh/yr

Upright-Manual

DOE standard

Proposed Energy Star Spec. Current Averaged Performance DOE Standard

Proposed Energy Star Level (10% reduction)

NAECA and ENERGY STAR: Chest Freezers

Chest-Manual Defrost Freezers Performance (AHAM-2001)

150

250

350

450

550

650

3 13 23

Size-ft3

kWh

/yr

Chest-Manual

DOE standard

Proposed Energy Star Spec.

Current Averaged Performance

DOE Standard

Proposed Energy Star Level(10% reduction)

Proposed ENERGY STARLevels: Freezers

• 10% below current NAECA standard

• Currently, freezers at 10% below NAECA do not exist

• Manufacturers stated they will produce more efficient product upon introduction of ENERGY STAR expansion

Estimated Energy Savings

• Assume 10% market penetration in first year• Freezers: 13.6 GWh

• Compacts: 8.2 GWh

• Mid-sized: 8.7 GWh

Estimated Energy Savings Formula

Model technique:• Weighted average size (ft3)

times average unit energy consumption improvement times annual shipments of Energy Star Units

• Give aggregate annual consumption

Options to Improve Performance

• Improve insulation• HCFC blown Ins. ends in 2004• New materials being considered

• Improve compressor performance

• ECMs for condenser/evaporator

• Onboard demand management

Conclusion

• These are proposed performance levels

• Please make comments today

• Reminder: Final comments due August 2