GS Credit: Load Duration Curve Optimization

Applicable to:

• Cities and Utilities (1–3 points)
• Campuses (1–4 points) 
• Transit (1-4 points)

INTENT

To encourage investments that optimize hourly demand loads and reduce both project costs and environmental impacts.

REQUIREMENTS

All Projects

Calculate the project’s annual hourly demand for one year, in kW, for all major loads served, including customer meters and central cooling and heating. Determine the annual load duration as a percentage of peak using the following formula:

Where: 

EConsumed = Total annual electricity consumption of project in kWh

Dpeak = Project peak annual electric demand in kW

8,760 = Hours per year

Points are awarded according to Table 1.

Table 1. Points for load duration curve optimization

Load Duration (% of peak)		Points
	Cities & Utilities	Campuses & Transit
≥ 25	1
40	2	1
55	3	2
70		3
85		4

Projects that achieve a load duration percentage of peak higher than 70% (cities and utilities) or 90% (campuses and transit) earn 1 additional point for exemplary performance under the Innovation credit category.

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