LEED EBOM certification for credit EAp2 & EAc1: A practical case study

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For this case study we have taken the Indian scenario of buildings.Gurgaon, Haryana is taken as site for the study. Buildings can be divided in two categories:

  • Category A: Captive Power generation (EC) + DGs for backup power generation
  • Category B: Grid electricity + DGs for backup power generation

Category A: The captive power plants like Energy Centre (EC) will come under this category. The ECs have gas based co-generation system, where in gas engine / turbines are used to generate electricity.

Category B: The buildings which do not have EC electricity supplied by the grid and chilled water is generated through electric chillers using electricity.

Quality control process inEAP2&EAC1:

There are quality control check‐points in the following stages of the delivery process:

Building Manager of each building will provide required data to Sustainability Consultant. The quality control check is to validate the accuracy and consistency of the data loaded into the specific building’s Portfolio Manager Account, and will include:

Category A and B, Approach 1:

  1. All fuel, electricity, and chilled water meters are calibrated on regular basis.
  2. Checking the consistency and accuracy of data loaded into Portfolio Manager
  3. Confirming that energy/fuel meters are in place to measure the entire energy use
  4. Confirmation that energy/fuel meters were in place for last 12 continuous months
  5. Checking consistency and accuracy of the inputs entered into Portfolio Manager (e.g.space types, space attributes, operating parameters, etc.) with information provided for other credits.
  6. Fuel metered data and utility bills will be provided by building manager to Sustainability consultant.
  7. Sustainability consultant team will fill the data in portfolio manager
  8. The operating hours entered into Portfolio Manager must only include time when atleast 75% of the regular building occupants are present.
  9. Make sure that more than 50% of the building’s gross floor area (excluding parking lots and garages) must fall in office category
  10. The combined floor area of all enclosed and not enclosed parking structures cannot exceed the total gross floor area of the building
  11. All the Buildings entered into the portfolio manager must be at least 5,000 ft²
  12. All the Buildings entered into the portfolio manager must be in operation at least 30 hours per week
  13. All the Buildings entered into the portfolio manager must Contain at least 1 worker during the main shift for applicable space types
  14. Offices must have more than 50% average annual occupancy
  15. To receive an energy performance rating, enter energy meters that account for all energy use in the building.Category A, Approach 2:
    1. Checking the consistency and accuracy of data loaded into Portfolio Manager
    2. Confirming that energy/fuel meters are in place to measure the entire energy use
    3. Confirmation that energy/fuel meters were in place for last 12 continuous months
    4. Regular calibration of the energy/fuel meters as per pre‐determined schedule
    5. Energy and fuel metered data will be provided by building manager to Sustainability consultant.
    6. Sustainability consultant will fill the data in portfolio manager.
    7. All calculations for DES/CHP system as mentioned in technical documentation will be done by Sustainability consultant team.

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8.  Sustainability consultant will be responsible for confirming that all the calculated energy values inserted in EPA are accurate and as per DES‐CHP Allocation Calculation tool with reference document “Treatment of District or Campus Thermal Energy in LEED for Existing Buildings: Operations and Maintenance”.

9. The calculation input, FUELp, will account for both natural gas and diesel fuel consumption at plant level.

10. Checking consistency and accuracy of the inputs entered into Portfolio Manager (e.g. space types, space attributes, operating parameters, etc.) with information provided for other credits.

11. Identify buildings where the ENERGY STAR rating drops close to or below 75 for further review and corrective action prior to submission for certification.

12. The operating hours entered into Portfolio Manager must only include time when at least 75% of the regular building occupants are present.

13. Make sure that more than 50% of the building’s gross floor area (excluding parking lots and garages) must fall in office category.

14. The combined floor area of all enclosed and not enclosed parking structures cannot exceed the total gross floor area of the building.

15. All the Buildings entered into the portfolio manager must be at least 5,000 ft².

16. All the Buildings entered into the portfolio manager must be in operation at least 30 hours per week.

17. All the Buildings entered into the portfolio manager must Contain at least 1 worker during the main shift for applicable space      types.

18. Offices must have more than 50% average annual occupancy.

19. To receive an energy performance rating, enter energy meters that account for all energy use (regardless of fuel type) in the building.

 Audit Documentation:

The following document is collected on every project, and, in case of an audit, will be Provided to USGBC / GBCI to verify the QC process outlined for this credit was completed, there are two main approaches for auditing-

Approach 1

  • Statement of Energy Performance (SEP) of Building
  • At least 3 Months Sample Utility log – Fuel/Energy and HSD ( Category A)
  • At least 3 Months Sample Utility log – Electricity and HSD ( For Category B)
  • Calibration Report of Energy / Fuel Meters
  • EAp2 & EAc1 Building Meter Inventory

Approach 2

  • Statement of Energy Performance (SEP) of Building
  • Sample Metered energy at the building level (electricity and chilled water)
  • Log of Monthly fuel consumption and Electricity generation by DES (EC) (Category A)
  • Sample calculation using the USGBC EB: O&M DES/CHP Allocation calculator
  • Calibration Report of Energy / Fuel Meters
  • EAp2 & EAc1 Building Meter Inventory

By

Sheelam khare, Naveen Yella, Gaurav Gupta[/ezcol_1half_end]

 

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