Measures that track carbon can be improved through better reporting: for example, self reporting by companies, better reporting within procurement itself. This includes carbon calculation as part of tender scoring during the procurement process.
A $5.5m taxi contract is being let, starting on 01/01/23 and ends on 01/01/28
Bidders must estimate their yearly emissions with supporting evidence.
Taxi Co reported yearly emissions to perform contract = 620 tonnes
Passengo reported yearly emissions to perform contract = 635 tonnes
Taxi Co wins the contract for $5 million or $1 million a year
This self report can be benchmarked against average for that category.