2021 March Capital reduction to 100,000,000 yen
2020 August Capital increase to 1,563,378,000 yen
2019 February Regional Energy System Development Support Program Using Innovative Storage Batteries 2018 <Selected>
  June Research and Development Program Phase D On The New Energy Development and Commercialization (Large-scale demonstration R&D) 2019 <Selected>
  August Capital increase to 1,213,000,000 yen
2018 August Capital increase to 828,000,000 yen
  September Capital increase to 843,000,000 yen
2017 February Capital increase to 331,000,000yen
  May Capital increase to 337,000,000yen
  June NEDO (2017) New Energy Technology Innovation Support Program for venture companies (New Energy Venture Technology Innovation Program) <Selected>
  July Kurume City Manufacturing Support Program 2017 <Selected>
  November Capital increase to 626,000,000 yen
    Independence/Return Support Employment Creation Industrial Location Subsidy 2017 (Manufacturing/Service Industry Location Support Program) <Selected>
2016 January Capital increase to 233,000,000yen
  September Capital increase to 278,000,000yen
  October Relocate Tsukuba Research Laboratories with a new name, Tsukuba Technical Center
2015 January Capital increase to 145,000,000 yen
  April Establish Tsukuba Research Laboratories
  June NEDO 2015 New Energy Venture Innovation Program <Selected>
  July Small and Medium Enterprise Agency (2015) Strategic Basic Technology Advancement Support Program <Selected>
2014 April Capital increase to 100,000,000 yen
  June Small and Medium Enterprise (SME) Agency. (FY2013 amendment) SME / Small Business / Manufacturing / Commerce / Service Innovation Program <Selected>
    Kurume City Manufacturing Promotion Program <Selected>
2013 August Capital increase to 33,000,000 yen
  September Kurume city Support Program <Selected>
    Joint research with Kurume Institute of Technology and development on battery charging system of RFB
  October Joint research with Gunma Technical College - Natural Renewable Energy on Grid System
  December Relocate headquarters to Kurume Higashiaikawa
2012 April Capital increase to 23,000,000 yen
  May Participate in Kyushu Institute of Technology Green cube project
    Redox flow battery stabilization test (10 months)
2011 January Establish LE Systems Co., Ltd. Capital 8,000,000 yen 
  October Start the redox flow battery demonstrated and collaborative research at Genkai-cho,
    Kurume city Support Program <Selected>
    Joint research with Kyushu Institute of Technology on redox flow battery titer sensor