Phoenix Convention Center • Phoenix, Arizona

The Energy Opportunity in Windows & Envelope Technologies

Energy Technologies Windows & Building Envelope

Karma Sawyer, PhDDepartment of Energy, Building Technologies Office

[August 13, 2015]

Energy Exchange: Federal Sustainability for the Next Decade

BTO Emerging Technologies (ET) Research Portfolio

Sensors, controls, and communications

Building energy modeling and simulation

Low global warming potential refrigerants

Heat pump water heaters

Advanced heat pump HVAC and refrigeration

Not-in-kind HVAC and appliance designs

Solid state lighting – LEDs and OLEDs

Advanced windows and opaque envelope

Energy Exchange: Federal Sustainability for the Next Decade

BTO’s Integrated Approach

Research & Development• Develop technology roadmaps• Prioritize opportunities• Solicit and select innovative technology

solutions• Collaborate with researchers• Solve technical barriers and test

innovations to prove effectiveness• Measure and validate energy savings

Codes and Standards• Establish minimum energy use in a transparent

public process• Protect consumer interests• Reduce market confusion• Enhance industry competitiveness & profitability • Expand portfolio of EE appliances & equipment • Raise the efficiency bar

Market Stimulation• Identify barriers to speed and scale

adoption• Collaborate with industry partners to

improve market adoption• Increase usage of products & services• Work through policy, adoption, and

financial barriers• Communicate the importance and value

of energy efficiency• Provide technical assistance and training

BTO Ecosystem

Energy Exchange: Federal Sustainability for the Next Decade

Building ComponentResidential Commercial

Heating Cooling Heating Cooling

Roofs 1.00 0.49 0.88 0.05

Walls 1.54 0.34 -0.03 -0.21

Foundation 1.17 -0.22 1.29 -0.15

Infiltration 2.26 0.59 1.60 -0.30

Windows (Conduction) 2.06 0.03 1.60 -0.30

Windows (Solar Heat Gain)

-0.6 1.14 -0.97 1.38

Energy Lost Through Building Enclosure Components (2010)

Source: Office of Energy Efficiency and Renewable Energy 2011a; Office of Energy Efficiency and Renewable Energy 2011b; Energy Information Agency 2010; Energy Information Agency 2013

Energy Exchange: Federal Sustainability for the Next Decade5

Check out the Windows & Building Envelope R&D Roadmap

I like to push the envelope… both opaque and

fenestration.

Thank you!

Energy Exchange: Federal Sustainability for the Next Decade6

• Tom Culp, Birchpoint Consulting• Diana Hun, Oak Ridge National Lab• Sneh Kumar, Alcoa/TRACO

Today’s Panelists