ENERGY STAR Commercial Refrigerators and Freezers

Regional Technical ForumJanuary 21st, 2016

Mohit Singh-Chhabra

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Presentation Objectives

Measure being updated as the ENERGY STAR specification were updated more than a year ago; Federal standards remain unchanged• Change measure category to Small Saver– As per the Guidelines, “The RTF may determine that the

likely savings from a measure are too small to warrant the resources needed to meet the quality standards defined for Provisional or Proven measures. Such measures are categorized as Small Saver”

• Approve proposed measure analysis

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ENERGY STAR Refrigerators and Freezers

• Current Measure Category: Proven• Proposed Measure Category: Small Saver• Current Measure Status: Active• Proposed Measure Status: Active• Measure Sector: Commercial• End Use: Refrigeration• Current Sunset Date: January, 2016

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What is this measure?ENERGY STAR has maximum energy consumption requirements for commercial self contained refrigerators and freezers based on:• Orientation

– Horizontal – Vertical

• Door type– Solid– Transparent

• Size– 0-15 cu. ft.– 15-30 cu. ft.– 30-50 cu. ft.– >50 cu. ft.

Measure being updated as ENERGY STAR standards have been updated since last measure update, Federal standards unchanged

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ENERGY STAR Specification effective October 2014; Federal Standards effective 2010

https://www.energystar.gov/products/commercial_food_service_equipment/commercial_refrigerators_freezers/key_product_criteria

Product Volume (in cubic feet)ENERGY STAR Federal Standard ENERGY STAR Federal Standard

Solid Door Cabinets 0 < V < 15 0.02V+1.60 0.25V+1.5515 ≤ V < 30 0.09V+0.55 0.20V+2.3030 ≤ V < 50 0.01V+2.95 0.25V+0.8050 ≤ V 0.06V+0.45 0.14V+6.30Transparent Door Cabinets0 < V < 15 0.10V+1.07 0.56V+1.6115 ≤ V < 30 0.15V+0.32 0.30V+5.5030 ≤ V < 50 0.06V+3.02 0.55V-2.0050 ≤ V 0.08V+2.02 0.32V+9.49

Solid or Transparent Door CabinetsAll volumes 0.06V+0.60 Same as vertical 0.10V+0.20 Same as vertical

HCT.SC.M, HCS.SC.M HCT.SC.L, HCS.SC.L

VCT.SC.M VCT.SC.L

Vertical Closed

Horizontal Closed

Refrigerator

VCS.SC.M

0.10 V + 2.04

Freezer

VCS.SC.L

0.40 V + 1.38

0.12 V + 3.34 0.75 V + 4.10

https://www1.eere.energy.gov/buildings/appliance_standards/product.aspx/productid/52#standards

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Vertical Solid Door Refrigerators Annual Energy Consumption

(kWh) by Size (Cu. ft.)

Vertical Transparent Door Refrigerators

Annual Energy Consumption (kWh)

by Size (Cu. ft.)

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

ENERGY STAR 3.0 Solid ENERGY STAR 2.0 Solid Fed. Std. Solid 2017 Std. Solid

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

ENERGY STAR 3.0 Transparent ENERGY STAR 2.0 Transparent

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Vertical Solid Door Freezers Annual

Energy Consumption (kWh) by Size (Cu.

ft.)

Vertical Transparent Door Freezers Annual Energy

Consumption (kWh) by Size (Cu. ft.)

-

2,000

4,000

6,000

8,000

10,000

12,000

14,000

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

ENERGY STAR 3.0 Solid ENERGY STAR 2.0 SolidFed. Std. Solid 2017 Std. Solid

-

5,000

10,000

15,000

20,000

25,000

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

ENERGY STAR 3.0 Transparent ENERGY STAR 2.0 Transparent

Fed. Std. Transparent 2017 Std. Transparent

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Proposed Measure Category: Small SaverRemaining Savings Potential, Refrigerators = 1.5 aMW; Freezers = 1.2 aMW• New Federal Standard applies starting March 27th 2017,

measure will sunset then– Upcoming Federal Standard is at the current ENERGY STAR

specification– Expected shipment to the PNW pre 2017 federal standard is 20,000

refrigerators and 9,000 freezers

• Data available and applied to calculate energy savings and incremental cost may not be worthy of Proven– Explanation to follow…

CAT proposal: update measure category to Small Saver for both measures

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• CAT proposes to use the recent DOE TSD (2014) analysis to estimate energy savings and incremental cost – RTF has considered the mix of appliances in the California Energy Commission’s

California Appliance Database (CEC db) to be representative of the Northwest market; the CEC db is used in the current measure workbook as well

– Considered using CEC appliance database, but the data were difficult to interpret

• The TSD considers performance and cost of different classes of refrigerators and freezers for up to 7 typical efficiency levels– TSD published energy consumption numbers are based on DOE appliance testing. – Incremental cost based on a component tear down analysis– Moreover, the TSD also estimates future market share of equipment by efficiency

level– Issue: the TSD contains analysis of one size per equipment, but the

ENERGY STAR standard has different requirements per volume class for vertical refrigeration equipment

Savings Estimation Methodology: Data

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Savings Estimation Methodology• For each TSD tested equipment class (e.g. solid door vertical

refrigerators (VCS.SC.M)) of a given volume, the max. allowable Federal and ENERGY STAR consumption were calculated

• For the same equipment class, a current practice (using TSD est. market share) and an average ENERGY STAR annual consumption calculated

• Ratio of current practice energy consumption to max allowable Federal Standard energy consumption developed (RCP) for each equipment class

• Ratio of average ENERGY STAR energy consumption to ENERGY STAR standard max allowable energy consumption developed (RES) for each equipment class

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Savings Estimation Methodology• For each ENERGY STAR equipment and size category ((VCS.SC.M 0-15 cu.

ft.), a max. allowable annual Federal and ENERGY STAR consumption calculated– The CEC db was used to determine average size (cu. ft.) per ENERGY STAR

equipment and size category

• Current practice energy consumption per size category: – (Max. Fed. Consumption) * (RCP for that equipment)

• Average ENERGY STAR consumption per size category:– (Max. ESTAR Consumption) * (RES for that equipment)

• Annual energy savings per equipment and size category is the difference between that category’s calculated current practice and ENERGY STAR annual consumption

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New Data Source’s Effects on Baseline• Existing workbook develops baseline energy consumption

estimates from California Energy Commission’s Appliance Database (CEC db).– For some measures, the RTF has considered the mix of

appliances CEC db to be representative of the Pacific Northwest market

– At time of existing measure development, CEC db showed very high penetration of ENERGY STAR refrigerators and freezers. Calculated baseline was at or above the ENERGY STAR 2.0 level in most cases

• The proposed measure update uses the DOE TSD estimated market penetration for 2017. This estimate implies a less efficient baseline

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Vertical Solid Door Refrigerators Annual Energy Consumption

(kWh) by Size (Cu. ft.)

Vertical Transparent Door Refrigerators

Annual Energy Consumption (kWh)

by Size (Cu. ft.)

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

0 10 20 30 40 50 60 70 80 90

ENERGY STAR 3.0 Solid Fed. Std. Solid Exist Baseline Prop. Baseline

-

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

0 10 20 30 40 50 60 70 80 90

ENERGY STAR 3.0 Transparent Fed. Std. Transparent

Exist Baseline Prop. Baseline

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Vertical Solid Door Freezers Annual

Energy Consumption (kWh) by Size (Cu.

ft.)

Vertical Transparent Door Freezers Annual Energy

Consumption (kWh) by Size (Cu. ft.)

-

2,000

4,000

6,000

8,000

10,000

12,000

14,000

0 10 20 30 40 50 60 70 80 90

ENERGY STAR 3.0 Solid Fed. Std. Solid Exist Baseline Prop. Baseline

-

5,000

10,000

15,000

20,000

25,000

30,000

0 20 40 60 80 100 120

ENERGY STAR 3.0 Transparent Exist Baseline

Prop. Baseline Fed. Std. Transparent

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Proposed ENERGY STAR Commercial Refrigerator Annual Savings

Current savings very small (0-30kWh kWh for most) due to high ESTAR 2.0 penetration at time of measure development.

VCS.SC.M_0-15

VCS.SC.M_15-30

VCS.SC.M_30-50

VCS.SC.M_50 VCT.SC.M_0-15

VCT.SC.M_15-30

VCT.SC.M_30-50

VCT.SC.M_50 HCS.SC.M_ALL HCT.SC.M_ALL -

200

400

600

800

1,000

1,200

1,400

1,600

1,800

kWh

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Proposed ENERGY STAR Commercial Freezer Annual Savings

Current savings very small (0-50kWh for most) due to high ESTAR 2.0 penetration at time of measure development

-

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

kWh

~15,000 kWh

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Incremental Cost Methodology• TSD spreadsheet includes an equipment tear-down cost

analysis for each equipment efficiency level

• Incremental cost for ENERGY STAR qualifying equipment calculated using TSD estimated cost and market share data. This incremental cost reflects the TSD test equipment volume

• For each equipment class, incremental cost scaled by volume to determine incremental cost per ENERGY STAR size range– Reminder: average size per volume range calculated using CEC db

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Proposed ENERGY STAR Commercial Refrigerator Incremental Cost

$-

$500

$1,000

$1,500

$2,000

$2,500

$3,000

Incr

emen

tal C

ost (

$)

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Proposed ENERGY STAR Commercial Freezer Incremental Cost

$-

$500

$1,000

$1,500

$2,000

$2,500

$3,000

Incr

emen

tal C

ost (

$)

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Proposed ENERGY STAR Refrigerator Regional Cost Effectiveness Analysis

0.0

1.0

2.0

3.0

21

0.01.02.03.04.05.06.07.08.09.0

10.011.012.0

Proposed ENERGY STAR Freezer Regional Cost Effectiveness Analysis

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Proposed Motion

“I, _______ , move that the RTF:• Adopt proposed analysis for ENERGY STAR

Commercial Refrigerators and Freezers• Change Measure Category to Small Saver• Keep Measure Status to Active • Set Sunset Date to March, 2017”