(7)The technical screening criteria for determining under which conditions an economic activity qualifies as contributing substantially to climate change mitigation should reflect the need to avoid producing greenhouse gas emissions, to reduce such emissions or to increase greenhouse gas removals and long-term carbon storage. It is therefore appropriate to focus first on those economic activities and sectors that have the greatest potential to achieve those aims. The choice of those economic activities and sectors should be based on their share of overall greenhouse gas emissions, and on evidence regarding their potential to contribute to avoid producing greenhouse gas emissions, to reduce such emissions or to contribute to greenhouse gas removal, or to enable such avoidance, reduction, removal or long-term storage for other activities.