IMPLICATIONS FOR SUSTAINABLE FINANCEDiversity of Strategies: There are many tools in the sustainable finance toolkit. Actors should select strategies appropriate to the aspect of the energy system they wish to transform and to their resource constraints. Interrelationship of Elements: Sustainable finance transactions generally involve all five elements, so it is necessary to focus on the elements where the greatest barriers exist. Policy and Non-Policy Approaches: While these approaches may differ in many respects, both should be considered as a means of addressing barriers to financing transactions.