Download Optimize Energy Performance

This credit offers the most points by far.
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As can be seen here, the intent of this credit is … 26
This credit has three options with which to show compliance: NOTE: It might be worth noting that the RG says “Project teams documenting achievement using any of the three options are assumed to be in compliance with EA prerequisite #2.”
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The first option involves using a computer simulation to show at least a 12% improvement (8% in the case of a major renovation) over a baseline building performance as described in Appendix G of the 90.1‐2007 standard. The larger the improvement, the more points are achieved (up to 19 for NC and schools and up to 21 for CS).
2. The second option requires compliance with the prescriptive measures of the ASHRAE Advanced Energy Design Guide that is appropriate to the scope of the project, if one is available. This option is only available to office & retail buildings under 20,000 sq.ft, warehouses or self‐storage facilities under 50,000 sq.ft, and schools under 200,000 sq.ft. This is worth 1 point.
3. The final option is to show compliance with prescriptive measures in the Advanced BuildingTM Core PerformanceTM Guide. This option is only available to projects under 100,000 sq.ft and is not available to health care, warehouse and laboratory projects. 1. Office, school, public assembly, and retail projects must comply with Section 1 and Section 2 of the Core Performance Guide for 1 point.
2. Up to two additional points is possible, 1 point is awarded for every 3 strategies implemented from section 3 of the guide.
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Here we see how many points are available under the first option above, where the variables are:
•Whether it is a new building or a renovation
•The rating system being used AND
•The percentage reduction in energy costs
So a new school that has energy costs 38% below those of the baseline ASHRAE 90.1‐2007 building would get 14 points. This can be a significant percentage of the points needed to certify.
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For the Existing Building Rating System, each project will fall into one of two cases and must then meet the requirements applicable to that case.
Case #1 is for projects that are eligible for an energy star rating in which case they must achieve an energy performance rating of at least 71 for 1 point and on up to a 95 for 18 points
Case #2 is for projects not eligible for an energy star rating. In this case the project has two options for demonstrating compliance:
Either demonstrate energy efficiency at least 21% better than the average for typical buildings of a similar type by benchmarking against national average source energy data provided in the EPA Portfolio Manager tool OR
Use the alternative method described in the LEED Reference Guide, achieving a performance better than the minimum.
In either case you will need the RG for full details and need to have meters calibrated and measuring all energy use during a 12 month period.
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And here we see the available points depending on which situation the project is being certified under.
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CI projects have two credits available related to optimizing energy performance.
For credit 1.1, … Projects must reduce connected lighting load by the percentages shown here compared to the allowances of 90.1‐2007. This allows for up to 5 points.
The project may use the space‐by‐space method or the building area method applied to the entire tenant space.
Project teams in CA may use Title 24‐2005, Part 6 in place of 90.1‐2007.
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This credit allows the project to earn up to 3 points by doing the following (@ 1 point each):
1. Install daylight responsive controls in all regularly occupied daylighted spaces within 15 feet of windows and under skylights. Daylight controls must switch or dim electric lights in response to the presence or absence of daylight illumination in the space. 2. Install daylight responsive controls for 50% or more of the connected lighting load and demonstrate that 50% of the connected lighting load is daylight responsive. Once again, daylight controls must switch or dim electric lights in response to the presence or absence of daylight illumination in the space. 3. Install occupancy sensors covering at least 75% of the connected lighting load. 32
Projects that use Option 1 under NC, CS or Schools and demonstrate enough improvement in the proposed building performance rating compared with the baseline building performance rating per ASHRAE 9o.1‐2007 will be considered for 1 additional point under the Innovation in Design category • for New Building a 50% improvement is needed , and
• for a Renovation: 46% Within EBOM, Projects are eligible for an exemplary performance credit when the next increment higher for Case 1 or Case 2, Option a is met. For Case 1, project buildings must receive an ENERGY STAR rating of 97 or higher, and for Case 2, Option 2, project buildings must be in the 47th percentile above the national median. If you remember, in the CI system there were two lighting related credits. For the first one, EAc1.1, project teams may earn an exemplary performance point by reducing the lighting power density 40% or more below the standard. For EAc1.2, projects, teams may earn an exemplary performance point within the CI system by implementing daylight‐responsive controls for 75% of the connected lighting load or by installing occupant‐responsive controls for 95% of the connected lighting load. 33