VOLUNTARY SUPPORT SCHEMES Customer-oriented policies to offer "green" electricity and in some cases also "green" gas and bio-fuels - at a price premium, can also help to ensure adequate financing of renewable projects by increasing their revenues. Here, certification of the renewable quality of the products is a major issue, and information for customers explaining the benefits is often lacking. Market development for green products could help to establish voluntary support schemes "from the bottom" in which virtually all customers, businesses and interest groups could participate. These can include: | 
