Certification shall include side-by-side performance comparisons of each involved system/feature. Involved equipment efficiencies shall also be within the top 25% of manufactured product lines. Computer programs must be approved by the project manager, represented by the designer as being capable of simulating weather variations, envelope heat transmission, internal load fluctuations, ventilation and air infiltration impacts, HVAC equipment part-load efficiencies, and considered control strategies.įor Major Renovation/Alterations projects, that do not involve total building modernization, involved system performance shall be certified to achieve at least a 10 percent better peak load energy efficiency, compared to ASHRAE 90.1-1999. Generally, this goal will be below the 55,000 BTU/GSF-YR target of the above referenced Executive Order.įor new construction and building modernizations, certification shall be based upon computer simulations of the overall building’s annual energy consumption. GSA also fully supports the Government’s Energy Star Buildings Program for its existing inventory, achieving metered consumption within the top 25% of involved building categories.įor new construction and building modernizations, designs shall achieve the project’s individually assigned annual energy goal, established by the Office of the Chief Architect. 2 points toward certification for new construction projects with every 20% increment, and for alterations projects with every 10% increment).
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GSA’s sustainability objective for LEED certification will likely be associated with trying to beat ASHRAE 90.1 energy performance by defined percentage levels, (e.g.