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The energy cost offset from onsite renewable energy cannot be used to demonstrate compliance with the prerequisite. Can this cost offset still be credited to the proposed energy cost savings for this credit?

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NC-v4 EAc2:Optimize energy performance

Net Zero Data Center

Hi All,

Greetings!..

Our team is creating the energy model for the Data Center. It is estimated that 4MW of energy will be consumed by the Data Center. The Data Center is powered by a substation which is connected to a 13MW solar PV plant. In addition to providing power to the Data Center, the substation serves other buildings.

Please note that the Data Center building does not have a dedicated battery storage system. When renewable energy sources are insufficient, electrical energy will be provided by the grid. Electricity/Utility Company, 13MW Solar PV Plant, and Data Center are all owned by the same company. Excess renewable energy (after meeting the data center's load) is available for sale by the owner.

• Can we consider the cost of excess energy as savings in Optimize Energy Performance credit?

• If yes for above question, what are the documents/proof must be provided for LEED submission.

• Is there any LEED Interpretation?

Thanks..

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Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 02/14/2022 - 16:01

Assuming the data center and the solar system are not owned by the same entity, you have to document the contractural relationship between the two. You will need a contract for at least 10 years, need to make sure the RECs have not been sold or have been replaced, and document that the solar system is within the same utility service terriroty as the project.

Tue, 02/22/2022 - 11:05

Hello Marcus, Electricity/Utility Company, 13MW Solar PV Plant, and Data Center are all owned by the same owner.  
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Tue, 02/22/2022 - 17:32

So assuming that the data center and PV plant are within the same utility service territory then it is simply a matter of allocation. A portion of the PV output must be allocated in a letter to the data center project. Also make sure that any RECs have been retained or replaced.

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