Best Green Hosting Company
The best green hosting provider that I know is GreenGeeks. They won two green web hosting awards in 2009 and one in 2008.
They have all what you need - PHP, MySQL, etc. and they support Wordpress, Joomla and Drupal.
You can host unlimited domains on one hosting account.
And they are 300% wind powered green hosting. They definitely are one of the top green web hosts and they have been growing quite a lot during the past few years.
Andrej, web designer
Disclosure: This is green web hosts review website and I receive compensation from the reviewed companies.