98eef080_r_Climate_and_Energy_Solutions__Expansion
[Policy] Renewable or Clean Energy Portfolio Standard (potentially tradable [Innovation] Can be limited – if standard is met and there is no ongoing incentive to invest in additional renewables. (Possible through frequent revision of the policy requirements.) [Compliance Cost Certainty] Minimal - can be difficult to know costs of meeting a renewable quota. [Environmental Certainty] Some - an RPS/CES behaves similarly to a performance standard. Total emissions will vary with overall output since an RPS/CES typically requires some fraction of power to be renewable. [Linkability] Yes - programs can be designed to trade production quotas, or buy renewable power, from other regions. [Revenue Recycling] No [Expansion] 
Minimal - an RPS could link with a renewable fuels standard, but these renewable fuel mandates are probably limited to electricity generation and transportation fuels.
Market Mechanisms: Understanding the Options | Center for Climate and Energy Solutions
Expansion