25MW Solar Plant Completed in Miyazaki, Connected to 220kV Grid

JV among Toshiba Infrastructure, TMEIC, TTCL provides construction services

2020/03/11 18:44
Sousuke Kudou, technical writer
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GNE Togo Mega Solar Farm (source: Toshiba Infrastructure Systems & Solutions)

Toshiba Infrastructure Systems & Solutions Corp (Kawasaki City) announced Feb 28, 2020, that a ceremony to celebrate the completion of a 25MW solar power plant in Hyuga City, Miyazaki Prefecture, Japan, took place Jan 29, 2020.

The site area of the mega (large-scale) solar power plant, "GNE Togo Mega Solar Farm," is about 535,000m2, which is equivalent to an area 11 times the size of the Tokyo Dome, and it is located in mountains.

The power producer of the plant is Global New Energy Togo Co Ltd (Chiyoda-ku, Tokyo). In February 2018, a joint venture among Thailand-based TTCL Public Co Ltd, Toshiba Infrastructure Systems & Solutions Corp and Toshiba Mitsubishi-Electric Industrial Systems Corp (TMEIC) received orders for construction work.

Toshiba Infrastructure Systems & Solutions was responsible for the supply of power receiving and transforming facilities, land formation for the plant site and electric work. It employed a method of driving piles after earthwork with a crawler drill. As a result, it became possible to drive piles for fixing solar mounting systems while blasting hard rocks for land leveling.

GNE Togo Mega Solar Farm is the first solar power plant that is connected to a power transmission line in the service area of Kyushu Electric Power Co Inc and a 220kV power grid. So, gas-insulated switchgears, oil-immersed transformers and digital protection relays supporting a voltage of 220kV were applied to it.

The solar panel and PV inverter employed for the plant are products of TTCL and Toshiba Mitsubishi-Electric Industrial Systems Corp (TMEIC), respectively. All the electricity generated at the plant is planned to be sold to Kyushu Electric based on a 20-year contract. Toshiba Infrastructure Systems & Solutions will be responsible for operation and maintenance of the plant for 20 years.