Restrict the use or sale of coupons for subsidized power producers;

Tax reserve certificates funded by funds in at least three countries but not retaining ownership can be sold under certain restrictions. Slag MTC and RIREF both need vouchers to fund projects, from sales to their respective countries. In Wisconsin, projects funded by bonds and funds may not be sold to mixed-investment 10 project operation. Finally, although the Clean Energy Fund does not directly impose restrictions, there are restrictions in Minnesota, where projects funded by the Fund must be sold to Xcel Energy due to the required standard power purchase agreement. In all other cases, there are no clear restrictions on the sale of generators funded by tax reserve certificates, including whether they can be sold into muddy water.