Compared to the high demand for electricity, the city's electricity self-sufficiency rate is quite low. The criticism that French geographers Jean-Francois Gravier described under the title 'Paris and the French desert' that the centralized authority and resources are desertifying other regions is not limited to France. Most of the world's capitals and large cities have devastated the area by sucking up the surrounding resources.

The same goes for power. Electricity from hundreds of kilometers away flows into the city via high-voltage transmission lines. Not only does power loss occur in this process, but it is also a reality that the outskirts of a marginalized area must be sacrificed again to produce electricity to be consumed in large cities.

In Korea, the blade rotor area is less than 200㎡, and the rated output is less than 30kW, classified as small wind power generation. It's not large, so it doesn't feel overwhelming and there is little noise. The power generation efficiency is also 1.5 times higher than that of solar power. But why isn't it easy to access small wind power generators in cities? First of all, it is said that cities are not suitable conditions for the supply of wind power generators due to poor wind conditions. However, there is no basis to say that the city does not have a resource of wind conditions and an average wind speed of 4.5m or more per second required for sales. This is because I have never conducted a survey of wind conditions. Rather, there are points where wind conditions that can be sold out by small wind power generation are predicted. Waterfront areas such as riversides, high-rise buildings, and places where the wind blows between buildings and buildings. Most cities are along rivers and there are tall buildings. It is not an exaggeration to say that cities are formed under conditions that allow wind power generation from the beginning. The problem is that we have not made this possibility a reality.

If we start from the premise that the city should be able to take responsibility for the electricity needed by the city as much as possible, we must actively use not only solar power but also the building rooftops with building style and the breeze formed by buildings. It is necessary to try to generate wind power in various places by finding a place where efficient wind power generation is possible by utilizing the wind from the building's vents. A power generation system linked with street lights, security lights, and wireless WiFi is also possible. There is already a case of installing a small wind turbine on the roof of a building with relatively strong winds in Korea. The important thing is to settle it as a wind power facility that can contribute to the actual urban power generation, beyond the case to the everyday landscape.

The first thing you need is a survey of wind conditions. A wind map that introduces effective winds by topography such as waterfront areas, highlands, and buildings should be prepared to create basic data for wind power generation, and based on this, strategies for small wind power generation should be established. It is necessary to actively support R&D for small wind power generation, expand test beds and pilot projects to verify the possibility of using various models of products by terrain. Until small wind power generation enters a certain trajectory, the government and local governments must set drastic supply targets and boldly promote supply projects and subsidies. It goes without saying that the new building is also given a correction factor that is given to other renewable energy sources. It is also necessary to increase the weight of the renewable energy supply certificate. Urban planning ordinances should be revised to open the possibility of small wind power locations.

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