EE Credit: Distributed Energy Resources

Applicable to:

• Cities and Utilities (1–6 points)
• Campuses (1–5 points)
• Transit (1-8 points)

INTENT

To reduce environmental impacts and minimize losses associated with energy transmission by promoting local renewable generation, distributed generation, energy storage, and district energy systems.

REQUIREMENTS

All projects

OPTION 1. Local renewables and clean generation (1–2 points)

Determine the percentage of the project’s total electrical load served by local renewables and/or clean generation technologies, as follows:

Points are awarded according to Table 1 and Table 2

Table 1. Points for local renewable and clean generation – campuses, cities and utilities

Local Renewable & Clean Generation (%)		Points
Campuses	Cities & Utilities
≥ 10	≥ 3	1
30	5	2

Table 2. Points for local renewable and clean generation – transit

Local Renewable & Clean Generation (%) for Transit	Points for Non-Traction Load	Points for Traction Load
≥ 10	1	1
30	2	2

AND/OR

OPTION 2. Local energy storage Campuses, Cities and Utilities (1 point)

Have in place at least one of the following technologies that support the project’s energy requirement:

• Mechanical
• Thermal
• Chemical energy storage

Only central storage systems are eligible to achieve points under this option.

Transit (up to 2 points)

Meet the below requirements (1 point each):

• Equip at least 10% of the active rolling stock with on-board energy storage systems
• Have in place way-side or stationary energy storage system integrated with project’s electrical system

AND/OR

OPTION 3. Prosumers (Cities and Utilities only, 1 point)

Generate at least 2 MW from renewable energy within the project boundary that is owned and operated by customers.

AND/OR

Option 4. District energy system (Cities, Utilities and Campuses only, 1–2 points)

Have in place a district energy system (DES) or be connected to a DES. For the purposes of this credit, a DES is a heating and/or cooling system that produces steam, hot water, and/or chilled water in a centralized plant using cogeneration or trigeneration and distributes this energy to multiple buildings. Determine the percentage of the project’s electric, cooling, and/or heating loads serviced by the DES using the following formula:

Where:

%HDES = Percentage of project heating load supplied by DES

%CDES = Percentage of project cooling load supplied by DES

%EDES = Percentage of project electric load supplied by DES

Calculate points based on the percentage of the project load supplied by a DES, as shown in Table 2.

Table 3. Points for district energy systems

DES Energy (%)	Points
≥ 80	1
160	2

AND/OR

Option 5. Regenerative Braking System (Transit only, 2 points)

Equip at least 50% of the rolling stock with regenerative braking system with at least one of the following capabilities – (for 2 points)

• Ability to inject excess power generated during braking into the main distribution system

OR

• Ability to transfer excess power generated during braking to an on-board energy storage device in isolation.

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