The combination of consistent policy and adequate financing can stimulate private-sector engagement. Additionally, within each energy subsystem, there are a number of focus areas that need to be addressed in order to provide sustainable energy for all. Deployment of cookstoves can be done with significantly less capacity building and long-term engagement of the private sector from a technological point of view, but market strategies to create more sustainable markets are a key role in the area of philanthropy for the private sector, in partnership with governments and NGOs.