on the basis of a cost-benefit analysis, ensure a net positive gain in terms of emission reduction and realise a pre-determined significant level of CO2 reductions taking into account the size of the project;
na cinn lena gcinnteofar gnóthachan glan dearfach ó thaobh laghdú astaíochtaí agus lena réadófar leibhéal suntasach réamh-shainaitheanta laghduithe CO2, ar bhonn anailís chostais agus sochair agus aird á tabhairt ar mhéid an tionscadail;