Toko Electric is engaged in a wide range of businesses, focusing on internal and external line construction.
In the Achievements page, we introduce some of the projects we have undertaken.

Business

Area

All WORKS

  • Outdoor wiring

    Kanto

    Tokaido Shinkansen

    We have been constructing overhead lines for train lines in the Tokyo area (including the Oi railroad depot) since our opening.

  • Renewable energy

    Tohoku

    2016

    Iitate Madeina solar power plant

    It all started when a company asked if we could do something for Iitate Village, which was forced to evacuate its entire village due to the nuclear accident. As part of the reconstruction effort, we co-funded a 10MW solar power plant with Iitate Village, which started operation in 2016, and by 2020, two 3.2MW wind turbines will be installed, creating Japan's first renewable energy cross power plant.

    Translated with www.DeepL.com/Translator (free version)

    Case Studies

    ■Power Plant Location
    Iitate Village, Soma County, Fukushima Prefecture

    ■Scale
    10MW (10MW solar power plant + 6.4MW wind power plant)

    ■Interconnection substation
    22kV/66kV

    ■Interconnected transmission line
    22kV/6km

  • Renewable energy

    Kanto

    2011

    Wind power Kamisu offshore wind power plant(Phase I, Phase II)

    It was the first monopile wind farm in Japan to be constructed on the ocean in Kamisu City, Ibaraki Prefecture, and we were the EPC (engineering, procurement, and construction) contractor.

    Case Studies

    ■Location of power plant
    Kamisu City, Ibaraki Prefecture, offshore power plant

    ■Scale
    30MW

    ■Wind turbine generators
    2MW×15 units

    ■Interconnection substation
    22kV/66kV

    ■Interconnected transmission line
    22kV/5.0km

  • Renewable energy

    Hokkaido

    2012

    Kaminokuni Wind Farm, Electrical facilities

    This is a large-scale wind power plant with 12 units of 2.4MW each, and a 10km transmission line is being laid to connect the plant to Hokkaido Electric Power. We designed and constructed this transmission line. A helicopter was used to transport materials and equipment through the mountainous area.

    Case Studies

    ■Voltage
    66kV and 33kV

    ■Power lines
    ACSR160mm2 (66kV)

    ■Section
    33kV section in Kaminokuni Town, approximately 4km in length
    66kV section: Kaminokuni Town to Esashi Town, approximately 6 km in length, 19 steel towers

  • Renewable energy

    Tohoku

    2010

    Ishinomaki Tomarihama solar power plant

    This is the largest solar power plant in Tohoku (9.5MW), built on farmland that has not been used for many years on the Oshika Peninsula. SPC Sun Energy Ishinomaki was established and is operating the plant for the purpose of reconstruction from the earthquake and the spread of renewable energy. We are also participating in this SPC, and are involved in the solar power generation business as well as construction work, operation and maintenance.

    Case Studies

    ■Power Plant Location
    Tomarihama Power Plant, Ishinomaki City, Miyagi Prefecture

    ■Scale
    9.5MW

    ■Interconnection substation
    6.6kV/66kV

    ■Interconnected transmission line
    66kV/2.0km