1.35MW mega solar in operation and 1MW mega solar completed on former sites of gravel plants

The two mega solar power plants that were damaged stand adjacent to each other. Both of them were developed by Technical Yield Co Ltd of Kasai Village, Sarabetsu-gun, Hokkaido. The sites were formerly occupied by gravel plants operated by an external company in the same business. The company developed the solar power plants on the sites, which were owned by the company and had remained idle for many years.

When they were damaged in the disaster, the 1.35MW power plant was in operation and the power generated by the plant was being sold. It was completed about three years and six months before the disaster. The 1MW power plant had been completed, and the commercial operation of the plant was about to start when the disaster occurred.

Technical Yield is engaged in the construction business, the production and sale of civil engineering materials, IT consulting and the waste treatment business in the Tokachi region.

The company also develops solar power plants in the Tokachi region. It operates four mega solar power plants for connection to high-voltage power distribution lines. They are the two plants in Nakajima Town in Obihiro City, a plant with an output of about 1.39MW in Shimizu Town (See related article 2) and a plant with an output of 1.55MW in Sarabetsu Town (See related article 3). The company also develops and operates solar power plants that are connected to low-voltage power distribution lines.

All of them were constructed on idle land that the company owns, including former sites of gravel quarries.

Regarding the two damaged mega solar power plants in Nakajima Town, Obihiro City, the power producer of the plant that was already in operation is Technical Yield while the power producer of the power plant that has yet to start commercial operation is Tokachi Kousan, a group company of Technical Yield.

The 1.35MW plant operated by Technical Yield mainly uses single crystal silicon panels manufactured by Yingli Green Energy Holding Co Ltd of China. The 1MW plant operated by Tokachi Kousan uses CIS compound-type panels manufactured by Solar Frontier KK.

The plant operated by Technical Yield incorporated PV inverters of GS Yuasa Co while the plant operated by Tokachi Kousan incorporated those of Toshiba Mitsubishi-Electric Industrial Systems Corp (TMEIC).