The Climate Bonds Initiative argues for green bond issuance at investment grade ratings, consistent with risk/return profiles with existing asset allocation requirements, rather than suggesting a premium (or penalty) rate for the bonds. They propose that governments and IFIs step in to enhance fixed income offerings tied to climate change solutions to ensure investment grade is achieved. In order to take advantage of feed-in tariffs and other government incentives, bonds have been issued exclusively for financing renewable energy or energy efficiency (see the discussion on CREB‟s in the following section on US Government Green Bonds). The projects which underlie.