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Advance Energy Conservation

101 

Understanding the Challenge:

Getting to Net Zero Buildings

TODAY’S BUILDING

DESIGNS MORTGAGE THE

ENERGY FUTURE OF THE UNITED STATES.

NEED TO SAVE ENERGY

• World energy consumption is projected to grow by 71 percent from 2003 to 2030 (U.S. Energy Information Agency)

• Oil is forecasted to remain dominant energy source with coal forecasted as primary fuel for generating electricity • Cost of oil in 1976 vs. now (getting figures from

Gordon)• Energy use increasingly shifting away from developed

countries and becoming more carbon-intensive

WHY ASHRAE?

• ASHRAE developed the first energy conservation standard in the U.S. at request of the federal government during the 1970s energy crisis

• Standard 90.1 now serves as the national reference for state commercial building energy codes through the U.S. Energy Policy Act

• ASHRAE continues to provide a wealth of technical and engineering information, including Standard 90.1, to help engineers reduce energy use

• ASHRAE has a long history in energy conservation and is committed to economic energy-efficiency standards and advanced guidance

WHO WE ARE

• Help keep indoor environments comfortable, productive and energy efficient

• Deliver healthy food to consumers• Preserve the outdoor environment • 50,000 volunteer members in 133 countries• Consulting engineers, contractors, manufacturers,

manufacturing representatives and architects

NET-ZERO ENERGY BUILDINGS

Buildings which, on an annual basis, use no more energy than is provided by on-site renewable energy sources.

CHALLENGES

• Establish carbon-neutral buildings by the year 2030

• Design buildings that use substantially less energy, reduce greenhouse gas emissions and create spaces that are healthy and comfortable

• Many high-performance buildings exist today that exceed minimum energy requirements by over 50 percent – yet aggressive research and development needed to achieve feasible, cost-effect net-zero-energy buildings

Guiding Principles

• With new buildings adding only 2% to the stock each year, we must emphasize improvements to existing buildings

• Standard 90.1 provides the code minimum, which must meet widespread consensus in the marketplace as the requirement for all new buildings

• Above-code documents can lead the market by providing means to voluntarily exceed code minimum requirements

Factors at Play

• How exactly do we define net-zero?

• Net-zero-energy buildings cannot be achieved by energy efficiency alone – renewable energy applications must be applied

• Standard 90.1 only influences the design of new buildings – actual performance of occupied building depends on many operating and maintenance factors – therefore actual EUI will differ from design EUI. Measured data is essential to verify performance

HOW WILL WE DO IT?

• Standards• Research• Special Publications

STANDARDS

• Standard 90.1-2010 – goal is 30 percent improvement over 90.1-2004

• Standard 189.1P – Design of High Performance Green Buildings Except Low-Rise Residential Buildings

SPECIAL PROJECTS/PUBLICATIONS

• Advanced Energy Design Guides – provide 30 percent energy savings over Standard 90.1

• Small office buildings

• Small retail buildings

• Warehouses

• Kindergarten through grade 12 schools

SPECIAL PROJECTS STEERING COMMITTEES

• Building Performance Protocols

• Carbon Emissions Calculation Tool

• Building Information Modeling and Interoperability

ASHRAE IS COMMITTED TO PROVIDING AGGRESSIVE ENERGY EFFICIENCY IMPROVEMENTS IN BUILDINGS. WHILE STANDARD 90.1 PROVIDES THE CODE MINIMUM, ASHRAE

WILL PROVIDE BEYOND-CODE GUIDANCE THROUGH DOCUMENTS SUCH AS THE ADVANCED ENERGY DESIGN

GUIDE SERIES. THE ULTIMATE GOAL IS NET-ZERO-ENERGY BUILDINGS.