E3_Conference Energy Star Presentation

ENERGY STAR for Existing Commercial Buildings

By

Paki Taylor, PE, LEED AP

ENERGY STAR Program

1. Joint program of the U.S. Environmental Protection Agency and the U.S Department of Energy - 1992.

2. Helps individuals, organizations, property managers and owners adopt cost-effective energy efficient technologies to manage energy costs and address climate change.

ENERGY STAR Program

• Credible and objective source of information.

• 3rd party verification of products and building energy performance.

ENERGY STAR Buildings

• Consume less energy

• Cost less to operate

• Provide utility bill savings

• Reduce carbon emissions

• Avoid the need for new power plants

ENERGY STAR results represent 1/3 of the total greenhouse gas emission reductions from the U.S. Climate Change Program

ENERGY STAR and Global Climate Change

ENERGY STAR 2006 Statistics

• Prevented 37 million tons of greenhouse gas emissions

• Saved 14 billion on utility bills

• Helped to avoid 35,000 megawatts of peak power

ENERGY STAR 2006 Statistics

• 3,200 buildings with Energy Star label

• 575 million square feet

• 35% less energy use

• Saved 600 million on utility bills

ENERGY STAR 2006 Statistics

• 300,000 buildings were rated using EPA’s energy performance rating system.

• 5 billion square feet

• 42% Hospital Space, 30% Supermarket Space, 18% School Space, 25% Office Building Space.

ENERGY STAR Partners

ManufacturesRetail PartnersBuilder PartnersPrivate BusinessState and UtilitiesEnergy Service Providers

• Commercial buildings can generate $2.00 to $3.00 of incremental asset value for every $1.00 invested in energy performance improvements.

ENERGY STAR Financial Case

ENERGY STAR Market Barriers

• Lack of Corporate Commitment

• Lack of Information

• Lack of Measurement Tools

• Tenant/Landlord Split Incentives

ENERGY STAR Program

• By encouraging top-level commitment.

• By creating easily accessible online information.

• By establishing a standardized energy performance rating system.

• By promoting system integrated approach to upgrade buildings.

How to attain an ENERGY STAR Label for a Commercial Building

• A Professional Engineer (PE) must perform the 3rd party validation of the building

Gather UtilityData

Verify, IAQ thermal comfort, illumination levels

Meet ENERGY STAR criteria ?

DetermineeligibleBuildings

Submitdocumentation for energy star award

Make recommendations for improvements

Yes

No

1. Eligible Space Types for the ENERGY STAR Label

• Offices

• Hospitals

• K-12 Schools

• Medical Offices

• Supermarkets

• Dormitory/Residence Halls

• Refrigerated/UnRefrigerated Warehouses

Energy Star Building Building Building Building Building

Eligibility Rules Sets for Benchmarking A B C & D E (FDLE) F

Joint

Building Type : Office, K-12 School, Office Office CEP & Office/Lab Dispatch

Supermarket/Grocery, Hotel, Acute care Cafeteria Center

& children's hospital

Building Type Requirement Satisfied? Yes Yes No Yes Yes

Occupied at least 11 of the 12 most recent months Yes Yes Yes Yes Yes

Gross Floor Area (Sq. Ft.) Yes Yes 5,000

Gross Floor Area < or = to 10,000,000 Sq. ft. (?) Yes Yes

Gross Floor Area > or = to 5,000 Sq. ft. (?) Yes Yes Yes Yes

Floor Area of Computer Data Center is not Greater

than 10% of the Gross Floor Area of the Entire ?) Yes Yes Yes No

50% of Gross Floor Area is Primary Office Space

(not including Garages or Parking Lots) Yes Yes No

Floor Area of Garage cannot exceed 100% of the

Facility's Gross Floor Area Yes Yes

Facility must operate 35 hours or more per week Yes Yes

Facility must have at lesat 1 Personal Computer

but not more than 25,000 Yes Yes

2. Gather Utility Data

• Eleven (11) months of consecutive utility data

• EPA Portfolio Manager rating of 75 or greater for ENERGY STAR Label

• EPA Portfolio Manager rating of 60 is prerequisite for LEED EB certification in Energy and Atmosphere category.

3. Verify IAQ, Thermal Comfort, and Illumination Levels for Building

A Professional Engineer (PE) is required to perform a site assessment to determine if building complies by:

• ASHRAE 55 – Thermal Comfort Criteria

• ASHRAE 62 – Outdoor Air Ventilation, Indoor Air Quality

• IESNA – Illumination Criteria

4. Submit Documentation for Energy Star Award

• PE Signs a Statement of Energy Performance and submits the document to the EPA for evaluation and ENERGY STAR award label.

Case Study – Capital Circle Office Center (CCOC), Department of Management Services, Tallahassee, Florida

• Fifteen (15) High Performance Buildings

• 1,225,704 square feet

• Designed for efficient operation, low maintenance costs, flexible floor plans, extended life cycle

Capital Circle Office Center (CCOC), Department of Management Services, Tallahassee, Florida

High Performance Features

• Central energy plant on densely developed campus

• Low-e glass• Sealed thermal envelope• Light sensors in office areas• Mandates for ENERGY STAR

equipment• Variable air volume HVAC

equipment• Digital Controls for faster

reliable adjustments as well as operating use

CCOC Energy Star Study Data Collection

• Several buildings were eliminated due to either poor performance or inaccurate data output.

• Only four (4) buildings yielded consistent chilled water and electrical consumption readings.

EPA Portfolio Manager Rating for four (4) CCOC buildings

Facility Name Current Rating

(1- 100)

Total Floor

Space

Square Feet

Current Energy Period Ending

Date

Eligible for

Energy Star

3611- 4030 73 80,000 2/28/2007 Not Eligible: Rating must be 75 or above

3613 - 4050 81 80,000 3/31/2007 Eligible

3918 - 4042 23 100,000 11/30/2006 Not Eligible: Rating must be 75 or above

Gerald L. Gunter 79 100,000 3/31/2006 Eligible

Site Assessment for Two (2) ENERGY STAR Eligible Candidates

• Temperature, humidity, illumination readings and volumetric airflow measurements were performed for office spaces, air handlers, and exhaust fans.

• One building did not satisfy the ASHRAE ventilation criteria.

Gerald L. Gunter Building was awarded the Energy Star Label for

2007

Building Performance for Energy Star Award Winner

Relative to a similar building type and square footage with an Energy Star rating of 23

• The estimated savings is 2.4 million kilowatt hours on an annual basis.

• A savings of $2.00 per square foot.

• A reduction in greenhouse gases (CO2) of 3, 842, 400 pounds.

• A reduction in Nitrogen Oxides of 5,830 pounds.

• A reduction in sulfur dioxides of 10, 512 pounds.

Buildings that did not qualify for the ENERGY STAR Label

PROBLEMS –

Incorrect Data Output, insufficient ventilation and exhaust, improper, controls

CONTINUOUS COMMISSIONING –

A system integrated approach focusing on

optimizing HVAC systems and controls based on

existing conditions

ENERGY STAR Summary

• ENERGY STAR label provides quantifiable and measurable results to increase asset value and reduce operational energy costs.

• Provides standardized measurement to establish energy targets.

• 3rd party verification to validate performance.