| 1974 |
Started research & development of PV technology. |
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| 1976 |
Established space satellite business. |
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| 1981 |
Commenced joint research of industrial-use photovoltaic inverter with New Energy
and Industrial Technology Development Organization (NEDO) and electric power companies. |
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| 1982 |
Commenced shipments of industrial-use photovoltaic inverters. |
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| 1985 |
Delivered 1000kW Central photovoltaic inverters (Saijo City, Ehime Prefecture)
(Delivery included one 200kW inverter, two 400kW inverters) |
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| 1987 |
Commenced research on residential-use photovoltaic inverters. |
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| 1993 |
Delivered 750kW system (one of the largest of its in Japan) to Miyako Island, Okinawa Prefecture. |
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| 1996 |
Started residential system business at Nakatsugawa-works.
Commenced production and sales of residential-use photovoltaic inverters. |
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| 1997 |
Awarded New Energy Vanguard 21 prize for residential-use photovoltaic inverters. |
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| 1998 |
Established a PV plant and started production of PV cells and modules at Iida Works. |
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| 1999 |
Awarded Good Design Award for roof-integrated modules. |
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| 2000 |
Commenced sales of industrial-use photovoltaic inverter unit (10kW). |
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| 2001 |
Expanded production capacity of solar cells to 25MW
Awarded the 6th New Energy Award by residential system for hip roofs. |
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| 2002 |
Commenced sales of residential outdoor-use photovoltaic inverters and booster units. |
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| 2003 |
Expanded production capacity of solar cells to 35MW (January).
Established a PV plant (Kyoto factory), and started production of PV modules.
Started production of "Lead-Free Solder" PV modules.
Expanded production capacity of solar cells to 50MW (September). |
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| 2004 |
Expanded production capacity of solar cells to 90MW (July).
Commenced sales of residential small-capacity and outdoor-use photovoltaic inverters. |
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| 2005 |
Expanded production capacity of solar cells to 135MW (April).
Commenced sales of industrial-use photovoltaic inverters with operation data monitoring system.
Established residential-use inverter assembly plant at Nagano factory. |
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| 2006 |
Commenced sales of residential-use photovoltaic inverters with 95.5% efficiency, the highest in the industry.
Commenced sales of photovoltaic inverters in European market.
Commenced production of a new size of PV cells (156 x 156mm). |
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