Our current economic system is gravely flawed. It is unjust and unsustainable because it is premised on endless economic growth and destruction of nature. Our market economy, by externalizing the environmental and social costs of greenhouse gas emissions, is creating the greatest market failure in history: climate change, and its devastating effects. Our government’s top economic goal — increasing Gross Domestic Product — impels us to perpetually intensify our resource use and environmental destruction.

Green economic policy places value not just on material wealth, but on the things which truly make life worth living — our health, our relationships, our communities, our environment, and building peace and justice throughout our nation and the world. We aim to maximize our quality of life with a minimum of consumption. We aspire to less “stuff” but more happiness. We propose a shift away from materialism to help people live more meaningful lives as we save the planet from climate change and ever-larger mountains of waste. We need to acquire the ability to distinguish between need and greed.
Source: Green Party Platform – Economics and Sustainability