C01_3_parts：HISTORY
| 1957 | April | Started retail and monthly installment sales of home appliances. Established the power tool repair center. Established the corporation as Isaka Electric Shokai Co., Ltd. |
| 1969 | May | Company name changed to ISAKA Electric Co., Ltd. |
| 1990 | April | Toshiba inverter preparatory processing (standard product specification change) center certified. |
| 1992 | April | Built a new company head office building in Higashi Osaka City. |
| 1996 | April | Started processing current coils for WH meters for Toko Seiki Co., Ltd. |
| 1998 | April | Production of inspection equipment for insulating resin processed products for batteries for SANYO Electric Co., Ltd. |
| 2007 | February | After the founder, Taiji Isaka, was found to have lung cancer, all operations were transferred to a subsidiary after explaining the situation to clients. After the transfer, the completion of liquidation was registered in 2011. |
| 2008 | October | With the recovery of the founder, the company started business focusing on renewable energy such as solar power generation. |
| 2009 | August | Established Isaka Electric Co., Ltd. as a design, construction and sales company for solar power generation systems and energy-saving systems. |
| 2009 | September | Started the business of construction of solar power generation systems subsidized by the Ministry of Economy, Trade and Industry. Moved the company head office to Morinomiya, Chuo-ku, Osaka |
| 2010 | December | Participated in a solar power generation project as an ODA project. Received an order for a 250kW solar power generation system for Afghanistan. |
| 2011 | April | Received an order for a 1.4MW solar power system for Nicaragua, the largest ODA project in this business, and ODA solar power systems for Africa and Central America |
| 2011 | June | Increased the capital to 14 million yen |
| 2012 | March | Increased the capital to 45 million yen |
| 2012 | April | Opened Tokyo Sales Office |
| 2012 | May | Started sales of pipe type lightweight solar cell frame |
| 2012 | June | Registered as a special construction business (electrical work business) |
| 2015 | March | Completed the first in-house power plant (Azuchicho Nishioiso Solar Power Plant 500kW). |
| 2015 | June | Established Japan IQ Energy Co., Ltd. as an overseas operating company. |
| 2016 | January | Established Morinomiya Energy Co., Ltd. as a power generation company. |
| 2019 | March | Completed the first water installation type solar power generation unit. |
| 2019 | July | Completed the first extra high-voltage solar power plant (Higashihiroshima City, Hiroshima Prefecture) |
| 2020 | October | Certified as a registered EPC contractor for a major electric power company. Started the PPA business. |
| 2020 | November | Obtained ISO9001 certification. |
| 2021 | July | Started in the small hydroelectric power plants (Kyotoshi Kyoto hydroelectric Power Plant 37kW). |
| 2022 | December | Completed the first in- Self-consumption storage battery power plant (Kitaibaragi, Ibaragi Solar Power Plant 200kW). |
| 2024 | October | Completed the first in- Surplus electricity selling type storage battery power plant (Irima-gun, Saitama Solar Power Plant 200kW). |
| 2024 | December | Completed the first extra high-voltage solar power plant on the roof (Higashiibaragi-gun, Ibaragi Solar Power Plant). |
