"ecoSky is a provider of leading internet services powered by clean, renewable, solar and wind energy. We host web sites using an infrastructure that draws power from the sun and wind." Their offerings are three levels of shared hosting plans, and a dedicated hosting plan.
They both buy renewable energy credits, and run their own solar power station. They say during the summer they sell significant amounts of power back to the power grid. They are based in Oregon and they have a mission to "deliver quality internet and communications services to the general public while contributing to the growth in awareness of and limiting our impact on the delicate balance of our environment."
While they offer dedicated hosting it's on an individual customized basis not as a canned service.