ENERGY OPTIMIZATION CRITERION SEVEN

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The intent of this criterion is to ensure that the projects are made energy-efficient by enhancing the envelope performance while also reducing energy consumption through installation of efficient equipment and lighting fixtures.

Maximum Points : 12

1) Appraisal

Appraisal – 1 ( Mandatory for 1 points )

  • Ensure that the project demonstrates compliance with the mandatory requirements of ECBC 2017 as per Appendix 3A, Table.

Appraisal – 2 ( Optional for 2 points )

  • Ensure that the heat gain through the building envelope meets the GRIHA threshold for peak heat gain as per Table ( Given below ).
ENERGY OPTIMIZATION APPRAISAL

Appraisal – 3 ( Optional for 1 points )

  • Demonstrate that 100% of exterior lighting fixtures (lamp + ballast) meet the luminous efficacy of 80 lm/W.

Note – Special purpose lighting occasionally used as floodlights, stage lights, pool lights/underwater lights, etc., are exempted from the calculations as mentioned in Appraisal – 3 ( Optional for 1 points ). However, please note that the façade lighting is not exempted.

Appraisal – 4 ( Mandatory for 1 points )

  • Ensure that the project meets the GRIHA benchmark for EPI as per Table ( Given below ).

Note

EPI of a building is its annual energy consumption (includes only HVAC* and internal lighting load) per square metre of the building. While calculating the EPI of a building, inhabitable areas such as unconditioned basement, storage area, plant room, boiler room, etc., shall not be included.

The EPI can be determined by the formula, as given below:

EPI = Annual energy consumption in kWh/ Total built-up area in m2 (excluding the inhabitable areas))

*HVAC load includes space cooling, space heating, heat rejection, ventilation load, pump and auxiliary load.


ENERGY OPTIMIZATION APPRAISAL ONE

Note – For mixed-use buildings, the GRIHA benchmark for EPI can be obtained using the extrapolation method, as explained in Appendix 3B.

Appraisal – 5 ( Optional for 0 TO 8 points )

  • Ensure that the project demonstrates additional reduction from the GRIHA benchmark for EPI as per Table ( Given below ).
ENERGY OPTIMIZATION APPRAISAL TWO

Appraisal – 6 ( Mandatory / Optional )

  • Ensure that the equipment installed within the project (whichever applicable as per Table (Given below )) is either BEE-star labelled or of equivalent performance.
ENERGY OPTIMIZATION APPRAISAL THREE

2) Compliance

Compliance – 1

  • Submit a narrative with descriptions of various systems with their components as indicated in Appendix 3A to demonstrate compliance with Appraisal-1 ( Mandatory for 1 points ).

Compliance – 2

  • Submit technical specification sheets/brochures of various systems with their components to demonstrate compliance with Appraisal – 1 ( Mandatory for 1 points ).

OR

  • Submit a valid GRIHA Product Catalogue certificate as applicable for the products to demonstrate compliance with Appraisal – 1 ( Mandatory for 1 points ).

Compliance – 3

  • Submit the purchase orders reflecting the full quantities of various systems and their components to demonstrate compliance with Appraisal – 1 ( Mandatory for 1 points ).

Compliance – 4

  • Submit a simulation report with input and output files for all building blocks in a project highlighting the peak heat gain values for the building envelope to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ).

Compliance – 5

  • Submit WWR and SRR calculations with supporting drawings (.dwg format) such as the floor plans, elevations, and building sections to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 6

  • Submit the envelope cross-sections (for walls, roof, and glazing) indicating material specification, thickness, etc., to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 7

  • Submit the technical specification sheets/brochures of building material used highlighting the U-values in the case of walls to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

OR

  • Submit a valid GRIHA Product Catalogue certificate as applicable for the products to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 8

  • Submit the technical specification sheets/brochures of glazing material used highlighting the U-value and SHGC to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

OR

  • Submit a valid GRIHA Product Catalogue certificate as applicable for the products to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 9

  • Submit the purchase orders reflecting the full quantities of wall, roof, and glazing assembly and sub-assembly materials to demonstrate compliance with Appraisal – 2 ( Optional for 2 points ), Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 10

  • Submit the calculations for luminous efficacy of each type of lamp used in outdoor lighting to demonstrate compliance with Appraisal – 3 ( Optional for 1 points ).

Compliance – 11

  • Submit the outdoor lighting layout (.dwg format) along with wiring diagrams and placement of automatic switches to demonstrate compliance with Appraisal – 3 ( Optional for 1 points ).

Compliance – 12

  • Submit the technical specification sheets/brochures for the lamps, ballasts, luminaires, and automatic controls to demonstrate compliance with Appraisal – 3 ( Optional for 1 points ).

OR

  • Submit a valid GRIHA Product Catalogue certificate as applicable for the products to demonstrate compliance with Appraisal – 3 ( Optional for 1 points ).

Compliance – 13

  • Submit the purchase orders reflecting the full quantities of outdoor lamp fixtures and automatic controls to demonstrate compliance with Appraisal – 3 ( Optional for 1 points ).

Compliance – 14

  • Submit a simulation report with input and output files for all building blocks of the project highlighting HVAC and internal lighting energy consumption as well as all input parameters used in the simulation to demonstrate compliance with Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 15

  • Submit a narrative and calculations demonstrating compliance and/or reduction from the GRIHA benchmark for EPI as per Appraisal – 4 ( Mandatory for 1 points ), and Appraisal – 5 ( Optional for 0 TO 8 points ).

Compliance – 16

  • Submit an operating schedule for electrical, lighting, HVAC systems, and equipment of the project as per the building typology.

Compliance – 17

  • Submit an occupancy schedule for the project as per the building typology .

Compliance – 18

  • Submit the purchase orders reflecting the full quantities of equipment/appliances purchased to demonstrate compliance with Appraisal – 6 ( Mandatory / Optional ).

Compliance – 19

  • Submit a copy of the tenant agreement in case of leasing out to a tenant, highlighting the clause that mandates the use of BEE-star labelled or equivalent equipment/appliances as per Appraisal – 6 ( Mandatory / Optional ).

Compliance – 20

  • Submit the technical specification sheets/brochures for all installed equipment/appliances indicating BEE-star labelling or ascertaining equivalent performance to demonstrate compliance with Appraisal – 6 ( Mandatory / Optional ).

OR

  • Submit a valid GRIHA Product Catalogue Certificate as applicable for the products to demonstrate compliance with Appraisal – 6 ( Mandatory / Optional ).

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