I'll join too!
Though I agree with awesomefowl and symphony - not so much green as just more self sufficient/more efficient.
Some things we are doing:
The special light bulbs, turning lights off that aren't being used, recycle, hang dry laundry (when it isn't freezing), the updated/efficient appliances. Heat in the main house stays at 60* in the winter, upstairs stays on 55*. Gardens, compost, and also have started working on passive solar water buckets for the animals in the winter....
The goats get grazed on any lawn we have (I have portable electric fencing, so I move it every 1-2 weeks depending on the size, and let them graze instead of mowing! If there is mowing, it is only the short wispy stuff that the goats won't eat) You would really be amazed at how much grain/hay is saved by grazing them even just a few hours a day!
Also use the animals manure for fertilizer.
I "process" my own animals for meat. Have animals to produce milk and eggs for us, and enough to sell to help pay for the herd's grain.
Definitely on a good path to being relatively self sufficient!