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Offshore Wind Power


These days, natural disasters believed to be attributable to global warming are having extremely serious effects on living environments. These effects can no longer be dismissed in corporate activities; indeed, many investors now carefully scrutinize companies’ efforts to deal with global warming. The environment surrounding companies is undergoing a dramatic change.
In April 2019, Japan enacted the “Act of Promoting Utilization of Sea Areas in Development of Power Generation Facilities Using Maritime Renewable Energy Resources.” For Japan, a nation surrounded by the sea, generating power through offshore wind power on those seas has potential that exceeds the nation’s total electric power demand. This fact is driving the rapid spread of offshore wind power as a means of tackling the global warming problem.

Offshore Wind Power Generation and Undersea DC Power Transmission

It is reported that the power grid that connects promising sea areas for offshore wind power generation of Japan (such as the northern Japan areas of Hokkaido and Tohoku, and the Kyushu area) and the major power consumption centers of Tokyo and Osaka lacks transmission capacity. This situation presents one obstacle to the expansion of offshore wind power. In general, the transmission of electric power takes the form of either “direct current (DC) power transmission” or “alternating current (AC) power transmission.” It is said that “DC power transmission” is more suited for long-distance transmission because less power is lost. In Japan, the distance of undersea DC power transmission amounts to about 50 km, but overseas some plans exceed 700 km. As in other countries, using undersea DC transmission to send power from regions with promising wind power areas to major power consumption centers will become a topic of study in Japan. Such a study will take into account various considerations that include not only technology and economic efficiency but also environmental impact.

SERVICEExamples of Services Provided by E&E Solutions
Due diligence for offshore wind power

To help with the commercialize wind power generation, we assist financial institutions with their investigations relating to financing projects (PF), including project plan reviews, risk assessments, and detailed examinations of project feasibility. We also assist operators through a series of support services that covers project plan formulation, concrete introduction studies, power facility construction, and operation.

Wind observation and prediction for offshore wind power

Wind conditions in the planned sea area form an extremely important part of a commercialization study, as they can determine the success or failure of the project. Methods for ascertaining offshore wind conditions generally boil down to setting up sensors along the coast (such as observation towers and Doppler lidars) and placing sensors at sea. We utilize the observed data to make predictions of year-long wind conditions in targeted sea areas.

Environmental assessment for offshore wind power

Because wind power generation projects involve large development areas, we conduct environmental assessments of them in accordance with the law. Specifically, we acquire knowledge of the targeted sea area’s social environment and natural environment and identify current conditions based on various measurements taken at the actual site. We then predict and assess specific environmental impacts based on the project plan.


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