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Disaster-hit Golf Course Redeveloped as Solar Plant (page 3)

Expertise in mega-solar power plant to be applied to urban building business

2014/02/01 21:02
Shinichi Kato, Nikkei BP CleanTech Institute
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At some solar power plants in heavy snowfall areas, solar panels are tilted at 30° or more so that snow slips off them. As Nishi-Shirakawa-gun, Fukushima Prefecture, does not have that much snow, the solar panels were tilted at 20°. The aim was to install the number of solar panels that can secure the expected amount of power generation in limited areas where solar panels can be set up without additional development.

Tilted at 20°, solar panels seldom shade neighboring panels even in the morning and evening when the sun is low and makes shadows longer, securing greater annual power generation. The standard height of solar panels was set at 60cm from the ground.

In addition, the design allows snow accumulated on the panels to slip off from the 20cm space set between the upper and bottom sides of the neighboring panels (Fig. 5).

The manufacturers of the solar panels and PV inverters used for the Phase 1 solar power generation system with 2MW output have not been revealed. But two manufacturers' solar panels were adopted in Phase 1. This was for the purpose of verifying the panels for the Phase 2 construction and for consideration such as in introducing reusable energy to Mori Trust's urban building business in the future.

Based on discussions by the Innovation Business Department at Mori Trust Hotels & Resorts Co Ltd (Shinagawa-ku, Tokyo), the latest mega solar power plant was designed to be profitable by leveraging the group's knowledge and management resources.

The Mori Trust Group said it will make the most of its experiences and knowledge acquired through this mega-solar power plant, approaching reusable energy-based power generation as a key issue along with the improvement in energy-use efficiency in its existing urban building business.

Among its urban buildings, Mori Trust accepted a total of about 3,600 displaced people to the Sendai Trust Tower, which is equipped with an emergency power generator, when the earthquake struck the region. The company’s Kyobashi OM Building, recently constructed in Chuo-ku, Tokyo, is equipped with an emergency power generator with a capacity equivalent to the weekly power consumption of the entire building as well as a stand-alone system combining solar panels and rechargeable batteries.