CIBSE TM46 describes the benchmarks for DEC evaluation for a range of common building types in the UK. For the building type of supermarket, the CIBSE TM46 sets out the following information • Electricity typical benchmark (kWh/m2): 400 • Fossil-thermal typical benchmark (kWh/m2): 105 • Illustrative CO2 typical benchmark for electricity (kgCO2 m²): 220 • Illustrative CO2 typical benchmark for fossil-thermal (kgCO m2): 20 Illustrative CO2 total typical benchmark (kgCO2/m?): 240 For a supermarket with a gross floor area of 1000 m², which does not experience unusual weather and exceptional occupancy, and does not have an onsite bakery, its annual electricity consumption is 300,000kWh and annual gas consumption 210,000 kWh. Calculate /describe: (a) CO2 intensity factors for electricity and gas. (5 marks) (b) Operation rating of the supermarket. (5 marks) (c) Display Energy Certificate rating of the supermarket. (5 marks) (d) Energy efficiency significance of the supermarket energy consumption in comparison to the benchmarks.