I ran across a pretty robust green ad network, Sustain Lane.  Some of the publishers are Backyard Nature, Green Car, Green Options, and a whole slew of others.

Sustain Lane Green Ad Network

Ad networks typically offer a lower CPM from contacting the website directly.  It also allows a decent website to keep its direct CPMs up, while selling off its remaining or remnant inventory to said network.  This allows sites to keep their brand elevated, while avoiding the ‘easy go around,’ Google content network.

There are quite a few network channels for advertisers to target, including Healthy & Beauty, Home & Garden, Cause & Awareness, Green Auto, B2B, Organic Food, and others.  Often segmenting and other demographic targeting will increase the CPM, so its a trade-off.

Sustain Lane also has a number of advertising solutions, such as display (standard and rich media), video, takeovers and roadblocks, emails, microsites, widgets, and webinars.  Not bad.

If you have a green product your advertising, I’d certainly check it out.

>> Sustain Lane, Green Ad Network homepage

>> Sustain Lane green guide website