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Cathy Higgins NBI Research Director

Getting to Zero: The 2014 Net Zero Energy Status Report

Findings for Commercial Buildings

Amy Cortese, Cathy Higgins and Mark Lyles

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Transform the World

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Number of ZNE Projects

2012 to 2014

160 ZNE ZNE Registry

+ 40 more Pending

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Locations of 160 ZNE Buildings

California ZNE Count in the Status Report: 10 Verified + 37 Emerging = 47 Total

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Sizes of ZNE Buildings

63% of buildings are < 25,000 square feet (sf)

and 18% are > 100,000 sf

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ZNE Building Types

• 36% Education • 24% Renovations • 18 Districts • 12 Multi-family • Increase in Private Sector

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Walgreens

IBEW 595

Solterra

Sokol Blosser Winery

PNC Bank

Morphosis Architects

Melink Corp.

McCormick Spices & Co.

Hines

Domus Development

Kaiser Permanente

Hanover Page Mill Associates

Green Leaf Inn

Georgia Peanut Commission

Frito-Lay TD Bank

DPR Construction

States & Cities: CA, CO, DC, MA, MN, NY, NM, VT, WA, Seattle, Austin

The European Union British Columbia, Canada

Adobe

Honda

KB Homes

JC Johnson Co.

3C Company

Hewlett Packard

TNT Express

Bubbly Dynamics

Walt Disney

Bayer

Who is going to Zero?

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Packard Building Energy Model

CA Title 24 EUI = 50

Courtesy: EHDD

kBtu

/sf/

yr

kWh

s/sf

/yr

Actual Performance

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Bullitt Center HVAC Overview Courtesy: PAE Consulting Engineers

Passive Solutions First

Decoupling Space Conditioning from Ventilation Moving away from forced air

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Plug Load Strategies

Courtesy T. Hootman RNL Design, S. Pleiss NREL

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© N

ew B

uild

ings

In

stit

ute

Walgreens Evanston Store 14,000 sf - Opened April ‘14

Efficiency Measures:

• Building massing (geometry and

orientation)

• Excellent insulation and windows

• Exterior shading, automated interior

shades & operable windows

• Dedicated outside air ventilation system

• Demand ventilation controls

• All LED lighting

• Daylight harvesting controls

• Refrigerated case doors

• Heat recovery from refrigeration

systems

• Ground source (geothermal) heat pump

heating and cooling

• Natural (CO2) refrigerant

• Solar PV & Wind turbine

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8,116 stores

120,000,000 sf

28W to 25W just one modest lamp change

$765/year/store energy savings

$765 x 8,116 = $6,208,740!

Scale Matters

HVAC on Display through Clear Wall

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Redding School for the Arts, CA Courtesy : Trilogy Architecture Steve Whittaker Photography

Teaching more than students

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Performance Range - Education

Average for all verified Education buildings = 70% below the national average

Energy Use Intensity (EUI) kBtus/sf/yr

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Transformation

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ZNE Take Aways

• Emerging movement

• Achievable with readily available and emerging

technology in all US climates

• High performance first – lower energy use lowers

PV cost

• District, community, campus level offer cost and

scaling efficiencies

• The energy use downstream of design is critical with

operations and tenants

Nothing beats Zero

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Questions - Discussion

Your thoughts on Pathways to Zero:

Proof – Program - Policy