While associated mainly with environmentalist policies, the party has a history of support for communitarian economic policies, including well-funded, locally controlled public services within the confines of a steady-state economy, is supportive of proportional representation and takes a progressive approach to social policies. The party is also strongly opposed to both nuclear power and the Trident nuclear programme. It is the only party other than the Scottish National Party (SNP) to both support Scottish independence and have representation in the Scottish Parliament. However, unlike the position taken by the SNP in the 2014 independence referendum, the Scottish Green Party supports Scotland having its own currency if it were to become an independent country. The party has said this would be in order to establish full economic independence, rather than being tied to the pound sterling.