| 1974 | Began research and development of PV technology. |
|---|---|
| 1976 | Established space satellite business. |
| 1981 | Commercial joint research of industrial-use photovoltaic inverter with New Energy and Industrial Technology Development Organization (NEDO) and electrical power companies. |
| 1982 | First shipments of industrial use photovoltaic inverters. |
| 1985 | Delivered 1,000kW Central photovoltaic inverters (Saijo City, Ehime Prefecture). Delivery included one 200 kW inverter and two 400kW inverters). |
| 1987 | Began research on residential-use photovoltaic inverters. |
| 1993 | Delivered 750kW system (one of the largest in Japan) to Mikayo Island, Okinawa Prefecture. |
| 1996 | Started residential system business at Nakatsugawa-works. |
| 1997 | Commenced production and sales of residential-use photovoltaic inverters. |
| 1998 | Established a PV plant and started production of PV cells and modules at lida factory. |
| 1999 | Awarded Good Design Award for roof-integrated modules. |
| 2000 | Began selling industrial-use photovoltaic inverter unit (10kW). |
| 2001 | Expanded production capacity of solar cells to 25MW. Awarded 6th New Energy Award by residential system for hip roofs. |
| 2002 | Started selling residential outdoor-use photovoltaic inverters and booster units. |
| 2003 | Expanded production capacity of solar cells to 35MW in January. Established a PV plant (Kyoto factory) and started production of PV modules. Started production of lead-free solder modules. Expanded production capacity of solar cells to 50MW in September. |
| 2004 | Expanded production of solar cells to 90MW in July. Commenced sales of residential small-capacity and outdoor-use photovoltaic inverters. |
| 2005 | Expanded production capacity of solar cells to 135MW in April. First sales of industrial-use photovoltaic inverters with operational data monitoring system. Established residential-use inverter assembly plant at Nagano factory. Began sales of photovoltaic modules in the United States. |
| 2006 | Commenced sales of residential-use photovoltaic inverters with 95.5% efficiency, the highest in the industry. Began sales of photovoltaic inverters to European market. Began production of larger PV cells (156 x 156 mm). |
| 2007 | Developed practical-use multi-crystalline silicon solar cell with world’s highest conversion efficiency rate of 18%. Began sale and production of UD5 series photovoltaic modules. |
| 2008 | Mitsubishi Electric Develops Practical-Use Multi-Crystalline Silicon Solar Cell with World's Highest Conversion Efficiency Rate of 18.6% |
| 2009 | Introduced UJ6 module series into US market |
| 2009 | Announced introduction of 100kW gradationally-controlled inverter into US marketplace |
| 2009 | Mitsubishi Electric Breaks Own Record with World's Highest Conversion Efficiency Rate of 18.9% for Multi-Crystalline Silicon Photovoltaic Cell. |
| 2010 | Announced Diamond Mount racking system and DC solution in US |
