Until recently, the Danes boasted about their most efficient 9 MW wind turbine in the world, the V164 from MHI Vestas Offshore Wind, which weighs 1,300 tons, is 220 meters high and has 80 meters blades (one blade weighs 38 tons).

However, General Electric built an even larger and more efficient turbine. Haliade-X is to have a capacity of as much as 12 MW and produce 67 GWh of electricity per year. Only one such turbine is to supply electricity to at least 16,000 households. Haliade-X is 260 meters high and slick tricks blades are 107 meters long.

The Americans have yet to say the last word. GE engineers are working on an even more powerful wind turbine that is expected to enter service in the next decade fast ahead. According to the information disclosed, the turbine is to be adapted to installation at sea and will be 480 meters high, i.e. higher than the second tallest skyscraper in New York.

The device generating electricity, thanks to the power of wind, is to have a capacity of as much as 50 MW and generate 268 GWh of electricity per year. As in Poland, per year, we consume approx. 170 TWh of electricity, this means that theoretically only 650 such offshore turbines can meet the energy needs of the entire country.

A farm of 650 turbines may seem like a huge undertaking, but from the perspective of Western countries, where farms with 100 to 200 turbines are currently being commissioned, building several farms in the Baltic Sea will not be such an unattainable plan. It should be emphasized here that according to the Draft of the State Energy Policy in 2040, such investments in Poland will exceed the global pioneer of offshore wind farms, namely Denmark.

The government wants to build up to 1,000 wind turbines in the Baltic Sea in the next two decades. The total capacity of the installation is to reach 10.3 GW. It is worth emphasizing here that Germany, one of the richest countries in the world, wants to have 15 GW of offshore capacity by 2030, so the ambitions of a much poorer country like Poland are admirable. The EU authorities plan that by 2030 RES will constitute 32 percent of all energy produced in the Community.

If the development of technologies for obtaining energy from renewable sources will proceed at such a rapid pace, we can expect that in 20 years, green energy will flow from the sockets in most houses in the lion's part of the world, and the natural environment of our planet will breathe a sigh of relief.