This is a public company in Canada called Finavera http://www.finavera.com/ . They have recently raised about 10M dollars of debt to continue with some great projects. They have several projects underway utilizing the technology shown below, some in Canada and several on the US west coast. They seem to be running into some resistance and concern from government officials and it looks like it is a slow process to get things approved. Meanwhile, they continue to improve the technology. Many of the buoys below would be 2-3 miles off-shore which make it more attractive to landowners obviously, but less so for boaters and fisherman.