We evolve and we learn. When it comes to building efficiency, we are advancing at warp speed. The Department of Energy has revealed that buildings meeting the new 2010 energy efficiency standard will conserve 18.5% more energy than structures using the previous 2007 DOE standard. It’s like making the jump to hyperspace.
The DOE did some pretty serious study to come up with the new codes. For its findings, DOE simulated 16 representative building types in 15 U.S. climate locations. In addition, they analyzed the energy codes published by the American National Standards Institute/American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) and the Illuminating Engineering Society of North America.
The evolved 2010 standard covers a wide spectrum of the energy-related components and systems in buildings ranging from simple storage units to complex energy usage locations like hospitals and laboratories. The size of the structures also ranged from under 1,000 square feet to the largest buildings in the world.
States are expected to review Standard 90.1, Energy Standard for Buildings and update their building code to meet or exceed the energy efficiency of the new standard within two years. Certification statements by the states are due October 18, 2013.
California requires our state-developed commercial code the 2008 Building Energy Efficiency Standards, comprising Title 24, Parts 1 and 6, of the California Code of Regulations.
The DOE boasts that the newer version of the standard contains 19 positive impacts on energy efficiency. Among the modifications are new requirements for daylighting controls under skylights; increased use of heat recovery; cool roofs in hot climates; skylights and daylighting in some building types; reduced ventilation energy; supply air temperature reset for non-peak conditions; efficiency requirements for data centers; control of exterior lighting; and occupancy sensors for many specific applications.
Over a 20-year span, green buildings can $53 to $71 per square foot back on investment. LEED and Energy Star certified buildings achieve significantly higher rents, sale prices and occupancy rates as well as lower capitalization rates potentially reflecting lower investment risk…and green buildings make the world a better place.