Depending on their location, emitters may be able to secure income from multiple revenue streams, including compliance (carbon) markets such as the EU ETS, tax credits, voluntary carbon markets, carbon dioxide as a commodity and low carbon product markets. Government support to emitters typically takes the form of capital grants and operational cost funding, through a contract for difference on a carbon price, as in the UK and Netherlands, or a storage tax credit combined with a low carbon fuel standard, as in the US. Emitters are likely to recover their capex over a longer period of time than is normal for their investments. Return will effectively be regulated as opposed to market driven.