'Safety/security Project' Completed for 235MW Solar Plant

PV inverters start to be installed

2017/04/01 15:47
Kenji Kaneko, Nikkei BP CleanTech Institute
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The reinforced embankment (source: Kuni Umi Asset Management)
TMEIC's PV inverters started to be installed. (source: Nikkei BP)
About 30% of the solar panels have been installed. (source: Kuni Umi Asset Management)

At the construction site of a mega (large-scale) solar power plant being built on the site of the former Kinkai Salt Farm in Setouchi City, Okayama Prefecture, Japan, a ceremony to celebrate the completion and donation of the reinforced embankment in the Kinkai Bay took place March 30, 2017.

The embankment was refurbished in the mega solar project and donated by the power producer to the city.

The mega solar project, which redevelops the site of the former Kinkai Salt Farm, consists of three projects: (1) a project to build one of Japan's largest solar power plants (grid capacity: 186MW, solar panel capacity: 235MW), (2) a "safety/security project" that strengthens measures against flood at the site of the former salt field and (3) an "environmental preservation project" that preserves the ecosystem peculiar to salt marshes.

The donation of the facility is part of the safety/security project. The salt field was made by building an embankment in the Kinkai Bay for reclamation. But the embankment was dilapidated, and its quake resistance needed to be enhanced. In view of this, the embankment was reinforced by using revenue from the mega solar project and donated to Setouchi City, which owns and manages the former salt field.

In the safety/security project, construction work has already been done for (1) widening of drainage canals in the former salt field, (2) a drainage pump for pumping seawater and (3) emergency power generation facilities. And they were donated to the city in April 2016. With the completion of the reinforcement of the embankment, the safety/security project has almost been completed.

In the project, 1,640m of the embankment was reinforced so that it can withstand tsunamis and liquefaction caused by the Nankai megathrust earthquakes. In addition, in the aim of preserving the ecosystem by maintaining the salt marshes in the reclaimed area, palisades were formed under the ground so that an appropriate amount of seawater sinks into the ground.