Green Options

The two projects, which each include 20 underwater turbines, will be finished within three years and will provide power to 40,000 homes.

ScottishPower Renewables will apply for planning permission next year to build the two farms in Northern Ireland’s seabed. The turbines will be manufactured in Scotland in an intentional boost to the country’s green-collar job market.

After two failed attempts, New York City has installed a new-and-improved aluminum alloy turbine in the East River, the only of its kind in the United States.

The turbine is the first of 300 which the city hopes to install in the waterway. Unlike the typical river which flows in a constant direction, the East River is a tidal straight with strong, fluctuating currents which allow for more efficient power generation. Once in place, the system could provide electricity to 10,000 households.

Majestic and serene, Nova Scotia’s Bay of Fundy is one of Canada’s natural marvels. Every tidal cycle, about 100 billion tonnes of seawater flows in and out of the Bay. With some of the highest tides in the world (it has a rivalry with the Leaf Basin in Ungava Bay), there are multiple opportunities to generate electricity from this natural wonder. These high tides provide an opportunity to generate power from the tidal energy in a similar manner to modern hydroelectric dams. And just like with hydroelectric dams, the question arises: is this energy really renewable and green?