The university’s energy performance was formally audited by SLR Industrial Solutions, a BEE Approved Energy Audit Firm, as documented in the Energy Audit Report dated January 2025 for B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai. The audit was conducted with the support of the institution’s management and technical staff and provides a structured assessment of campus-wide energy consumption, system performance, and energy-saving opportunities.

Reporting Boundary and Assessment Year

Based on the Energy Audit Report of BSA Crescent Institute of Science & Technology issued in January 2025, the last full reporting year available for emissions assessment is 2024. The institution should report Scope 1 and Scope 2 emissions in line with the GHG Protocol Corporate Standard, using activity data taken from the report and approved emission factors from the institution’s chosen methodology. The audit provides the main baseline energy data needed for this purpose, especially grid electricity consumption, DG generation, diesel consumption, and solar generation.

Activity Data Identified from the Energy Audit Report

The report records the following annual energy data for 2024: EB consumption = 42,73,653 kWh, solar generation = 4,87,177 kWh, DG generation = 1,76,992 kWh, and diesel consumption = 50,715 litres. For GHG accounting, these figures must be classified carefully. The most important are  purchased grid electricity and the diesel consumed in campus DG sets, as these directly support the calculation of Scope 2 and Scope 1 emissions respectively.

Scope 1 Emissions: Direct Fuel Use on Campus

Under the GHG Protocol, Scope 1 emissions are the direct emissions from fuel combusted by sources owned or controlled by the university. In this report, the relevant Scope 1 source is the diesel used in the two campus diesel generator sets, which are operated during grid failure. The audit clearly shows annual diesel consumption of 50,715 litres in 2024. Using a commonly applied diesel emission factor of 2.68 kgCO2e per litre, the Scope 1 emissions are calculated as 50,715×2.68÷1000=135.9250,715×2.68÷1000=135.92 tCO2e.

Scope 2 Emissions: Purchased Electricity from the Grid

Scope 2 emissions cover indirect emissions from purchased electricity consumed by the institution. The report states that the total annual EB electricity consumption from TANGEDCO for 2024 is 42,73,653 kWh. Using a commonly applied grid emission factor of 0.7082 kgCO2e per kWh, the Scope 2 emissions are calculated as 42,73,653×0.7082÷1000=3,026.6042,73,653×0.7082÷1000=3,026.60 tCO2e. 

Treatment of DG Power and Onsite Solar Generation

The audit also reports DG power generation of 1,76,992 kWh and solar generation of 4,87,177 kWh. For GHG accounting, the DG electricity generated should not be counted separately under Scope 2, because the related emissions are already captured in Scope 1 through diesel consumption. Similarly, onsite solar electricity generation is not counted as Scope 2 emissions, because it is generated within the campus from a renewable source and does not represent purchased electricity. 

Total Scope 1 + Scope 2 Emissions

Accordingly, the total emissions to be reported under QS are  the sum of Scope 1 and Scope 2 emissions: 135.92 tCO2e + 3,026.60 tCO2e = 3,162.52 tCO2e. Therefore, based on the activity data available in the energy audit and the emission factors used above, the institution’s total Scope 1 + Scope 2 emissions for 2024 are 3,162.52 tCO2e. This is the value that can be used for QS emissions efficiency assessment, subject to confirmation of the final emission factors adopted by the institution.