to improve energy performance above the baseline (EAp2) by
employing energy efficient strategies and equipment
Option 1 - Whole Building Energy Simulation (1-10 points).
Demonstrate a percentage improvement over the baseline building
performance rating per ASHRAE/IESNA Standard 90.1-2004 or
Title24-2005 by using the Building Performance Rating Method in
Appendix G of the Standard. Points will be achieved based on the linked USGBC pdf
Option 2 - Prescriptive Compliance Path (office buildings under
20,000 SF, 4 points). Comply with the prescriptive measures of the
ASHRAE Advanced Energy Design Guide for Small Office Buildings
Option 3 - Prescriptive Compliance Path (1 point). Comply with the
Basic Criteria and Prescriptive Measures of the Advanced Buildings
Benchmark Version 1.1.
- Reduce demand
- Harvest free energy
- Increase efficiency
- Recover waste energy
- EAc1 example documentation is available on the USGBC website.
It is best to follow the USGBC format precisely and not use custom
tables or graphs.
- Separate guidelines (e.g. LEED for Labs) are being developed
specifically to address perceived shortcomings in the current
energy performance evaluation system. In general, it is best to
work with an energy modeler who is versed in LEED Energy Cost
Budget requirements to best estimate the percentage of energy cost
savings that will be approved by the USGBC for a given project or
- To maximize the points in this credit, consider renewable
energy-based HVAC systems or systems that use waste heat
- Consider incorporating energy performance contracting as a way
of financing additional energy efficiency in new buildings.
- The 2005 Federal Energy Bill offers tax incentives of $1.80 per
square foot for new commercial buildings designed to exceed the
ASHRAE 90.1 standard by 50 percent or more.
- Check with local utility for demand-side, energy efficiency,
and market transformation programs, such as Savings By
- 97% of all California LEED Certified projects achieved
this credit for LEED v2.1.
- California LEED Certified projects achieved 6.7 credits
on average for EAc1 under LEED v2.1.
Additional EDR Resources
Training Module #1
Title 24 and Savings By Design
Design Briefs: Building
Design Briefs: Improving Mechanical System Energy
Design Briefs: Design
Energy Management Systems
Efficient Lighting Systems
Guidelines: HVAC Simulation Guidelines