David Rodgers, Deputy
Assistant Secretary for Energy Efficiency , appeared before Congress to
discuss the potential for increased energy efficiency in new and
existing buildings to reduce greenhouse gas (GHG) emissions.
In order to provide a solid basis for efficiency improvement in the
buildings sector we are working to evaluate and strengthen building
energy codes.
Residential: To ensure that all new homes become more energy
efficient, DOE has long participated in the development of the
International Code Council's (ICC) International Energy Conservation
Code (IECC). The ICC, a voluntary, consensus-based industry standards
development organization, updates the IECC every three years.
The
Department's current goal is a residential energy code that is 30% more
efficient than the 2006 IECC.
The ICC is currently considering code
proposals that have the potential to improve the residential code by 18
to 22% when the next IECC update is published in 2009.
Commercial Energy Efficiency Sector
In the commercial sector, DOE is also partnering with
the American Society of Heating, Refrigerating and Air-Conditioning
Engineers (ASHRAE) to develop model building codes that are 30% more
efficient by 2010 for all new commercial buildings compared with 2004
standards.
ASHRAE and DOE have signed a Memorandum of Understanding
(MOU) to demonstrate their mutual commitment to work together toward
this goal. Additionally, the MOU includes commitment by ASHRAE and DOE
to improving the efficient use of energy, promoting viable and
widespread use of renewable energy sources, and minimizing the impact
of energy use on the environment.
Design Guides for Energy Efficiency
As it is much more cost-effective to realize profound
improvements in building performance at the time of construction than
to retrofit homes or buildings, we encourage and are helping states to
adopt and implement these code changes.
We are also expanding
assistance available to states and local governments and working with
the private sector to develop 30% and 50% "beyond code" design guides
to encourage maximum efficiency in buildings nationwide.
DOE projects that its building energy code-related activities save
the nation's home owners $200 million and commercial building owners
$1.9 billion in 2010 (2000 dollars). Cumulatively, since the inclusion
of the 1992 Model Energy Code as part of the 1992 Energy Policy Act,
DOE estimates savings from codes (in 2008) at $6.4 billion for
commercial buildings and $600 million for homes.
By 2030, DOE estimates that full adoption and implementation of 30%
model codes in America's homes and buildings has the potential to save
approximately 2.7 Quads of energy per year and to avoid nearly 160
million metric tons of C02 equivalents per year, which could
potentially save consumers up to $20 billion in annual energy
expenditures.
Net-Zero Energy Buildings -- The Goal
We are working ultimately to enable builders and the construction
industry to increase production of net-zero energy
buildings--grid-connected buildings that, over the course of a year,
produce as much energy as they use--and make it more profitable for them
to do so.
The Builders Challenge
In February, Secretary Bodman launched the Builders Challenge:
The Builders
Challenge is a voluntary national energy savings program calling on the
U.S. homebuilding industry to build 220,000 high-performance, energy
efficient homes by 2012.
A high-performance home would use at least 30%
less energy than a typical new home built to meet criteria of the 2006
International Energy Conservation Code.
Homes qualifying will meet a 70
or better on a new EnergySmart Home Scale, or E-Scale, that will be
affixed to the homes allowing buyers to understand at a glance the
energy performance of that home.
To date, 185 builders and 99 other partners have already pledged to
build an estimated total of 10,000 high-performance homes. Ultimately,
DOE aims to see 1.3 million homes of this high standard constructed by
2030. Significantly increasing the energy efficiency of homes is
essential to achieving the DOE goal that, by 2020, a consumer will have
the opportunity to buy an affordable net-zero energy home. The Builders
Challenge establishes a framework for continuous improvement that will
help propel the market toward zero-energy performance.
SOURCE:
Testimony of David Rodgers, Deputy
Assistant Secretary for Energy Efficiency before the Committee on
Energy and Commerce Subcommittee on Energy and Air Quality, United
States House of Representatives. Topic: Buildings Energy Efficiency and
Greenhouse Gases, July 17, 2008, http://www1.eere.energy.gov/office_eere/rodgers_testimony_071708.html