Reduce design energy cost compared to the energy cost budget for regulated energy components described in the requirements of ASHRAE/IESNA Standard 90.1-1999 (without amendments), as demonstrated by a whole building simulation using the Energy Cost budget Method described in section 11 of the Standard. In addition, use the Labs21 Laboratory Modeling Guidelines for all systems serving laboratory areas.

Regulated energy systems include HVAC (heating, cooling, fans and pumps), service hot water and interior lighting, as well as laboratory ventilation systems and exhaust devices. Plug loads should be included in the simulation, but should be excluded in calculating the percentage difference between the budget building and the proposed design.

Credit 1.1 (1 point) Reduce design energy cost by 5%
Credit 1.2 (2 points) Reduce design energy cost by 10%
Credit 1.3 (3 points) Reduce design energy cost by 15%
Credit 1.4 (4 points) Reduce design energy cost by 20%
Credit 1.5 (5 points) Reduce design energy cost by 25%
Credit 1.6 (6 points) Reduce design energy cost by 30%
Credit 1.7 (7 points) Reduce design energy cost by 35%
Credit 1.8 (8 points) Reduce design energy cost by 40%
Credit 1.9 (9 points) Reduce design energy cost by 45%
Credit 1.10 (10 points) Reduce design energy cost by 50%

Technologies & Strategies

Design building systems to maximize energy performance while maintaining or improving health and safety requirements. Consider the following strategies in particular:

Use high performance low-flow fume hoods.
Use variable air volume fume hoods (combined with VAV supply and exhaust) assuming maximum 50 percent flow turndown between design maximum and minimum volume.
Use energy (latent and sensible) recovery.
Eliminate simultaneous heating and cooling.
Use evaporative cooling when ambient conditions allow.
Minimize outside air to 1 cubic foot per minute per square foot (cfm/sf) or less.
Reduce unoccupied outside airflow during unoccupied periods.
Expand unoccupied temperature dead band by automatically resetting zone temperature set points based on occupancy.
Encourage small HVAC zones with no 100 percent outside air control zones greater than 1000 square feet.
Provide a cooling system with at least two cooling loops operated at different temperatures. This can be accomplished with separate chillers (or direct tower cooling).
Design for high part-load heating and cooling efficiency.

Use a computer simulation model to assess the energy performance and identify the most cost effective energy efficiency measures. Quantify energy performance as compared to a baseline building.

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