Words to describe "being green"?

I'm a part of a sustainable energy team and we are trying to come up with a good name for our soon to be non-profit organization. The problem is that we keep using "green" to describe being energy efficient and so on. I was wondering if anyone had any other words or synonyms that could literally or... show more I'm a part of a sustainable energy team and we are trying to come up with a good name for our soon to be non-profit organization. The problem is that we keep using "green" to describe being energy efficient and so on. I was wondering if anyone had any other words or synonyms that could literally or symbolically mean the same thing? We are trying to come up with a company name so we wanna be as original as possible. Thanks in advance!
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