MELD is a new initiative based in Greece which understands the arts to be part of the means to address Climate Change because the arts can be a collaborative catalyst as well as a catalyst of social change, a catalyst for economic growth and also a marketing tool.
On the other hand you might also be interested in Brett Bloom’s (of Temporary Services) article Radical Space for Art in a Time of Forced Privatization and Market Dominance which focuses on how not to be part of the ‘art world,’ but to find new means now, resisting the corporatisation of art.
These two are perhaps at opposite extremes of the range of practices addressing socio-economic environmental issues. Didn’t Einstein say “We can’t solve the problems using the same thinking we used when we created them.”
I suggest you ask on the festival’s facebook page.