Offshore and Onshore Wind Power Generation
Wind power generation utilizes wind energy to generate electric power.
There are two types of wind power generation facilities: onshore and offshore. A large number of onshore wind power generation facilities have already been constructed in Japan, and there are hopes for offshore wind power plants to be constructed in the future.
RENOVA is engaged in the proactive development of both onshore and offshore wind power generation projects.
Features of Offshore and Onshore Wind Power Generation
The introduction of wind power generation facilities is progressing worldwide, and they currently account for around half of all power generated using renewable energy sources. Since the launch of the Feed-in-Tariff (FIT) scheme in Japan in 2012, the introduction of onshore wind power facilities in the country has progressed, and with the enforcement of the Act of Promoting Utilization of Sea Areas in Development of Power Generation Facilities Using Maritime Renewable Energy Resources in 2019, many offshore wind power facilities are now expected to be constructed in the future.
Generating power using wind energy requires a certain degree of wind speed, and power cannot be generated when the wind is too weak or too strong, for example during a typhoon. It is, however, an efficient method of power generation, which allows power to be generated during both the day- and nighttime.
Mechanism of Offshore and Onshore Wind Power Generation
In wind power generation, the rotational energy of wind turbine blades is converted into electrical energy. In typical designs, the rate of rotation of the blades is accelerated by a gearbox in a device called the nacelle, which houses the main components and devices. This rotation drives the turbine generator, which generates electricity. The larger the wind turbine, the higher its power generation efficiency becomes, so the development of larger sized wind turbines is currently underway in countries around the world. The blades on large turbines developed in recent years and installed at some onshore locations reach a maximum height of 130m, while turbines installed offshore exceed 200m.
Offshore and Onshore Wind Power Plants
Abukuma Onshore Wind[under construction]Fukushima Prefecture, Japan
Isumi Offshore Wind Project[under development・ auction process]Chiba Prefecture, Japan
Reihoku Amakusa Onshore Wind[under construction]Reihoku-machi, Amakusa-gun, Kumamoto Prefecture, Japan
Karatsu Offshore Wind Project[under development・ auction process]Saga Prefecture, Japan
Quang Tri Onshore Wind[in operation]Huong Hoa District, Quang Tri Province, Vietnam