Key Milestones
| Year | Achievements |
|---|---|
| 1986 | Informal launch of Planters Energy Network (PEN) & Mr.Palaniappan receives the Young Solar Scientist award from ICTP; spends one year for solar research in Europe |
| 1989 | Formal registration of PEN with headquaters at School of Energy Sciences Madurai Kamarajar University |
| 1991 | 1. National Solar Energy conference organised at Madurai Kamarajar University 2. PEN installed first roof integrated Solar Air Heater(SAH) at Manjolai Tea Estate in Tirunelveli district. |
| 1992 | Installation of solar air heating system at Golden hills Nilgiris providing 35% energy saving. |
| 1993 | PEN organises international conference on “Energy Perspective in Plantation industries” in collaboration with UPASI and MKU. |
| 1993-96 | 1. Nine tea gardens goes for Solar Air Heating systems by PEN. 2. Completion of 2625 m2 Solar air heating system. |
| 1996 | Installation of solar air heating for spices at Eastern Condiments. |
| 1997 | Organised International Conference on “Renewable energy application to industries”in collaboration with IIT Madras & MKU |
| 1999 | Installation of solar air heating for spices at Sakthi Masala |
| 2000 | 1. Organised International Conference on “Renewable Energy Technologies - Application to Agro Processing Industries” In collaboration with IIT Madras & Madurai Kamaraj University 2. Completion of 5000 m2 Solar air heating system |
| 2002 | Dr. C Palaniappan voluntarily retires from academic activities – Dedicates his full-time towards promoting solar applications |
| 2005 | 1. SUNBEST inaugurated at Theni; PEN headquarters shifted to Theni 2. Enters the industrial Solar Water Heating activities 3. Completion of 7500 m2 Solar air heating system. |
| 2007 | Start of solar water heater division |
| 2010 | Completion of 10000 m2 Solar air heating system. |
| 2011 | SUNBEST received CARE rating - SP2B for its solar air heating division |
| 2012 | 1. Start of Solar SPV division 2. Completion of 100000 LPD Solar water heating system |
| 2015 | SUNBEST nominated for ASHDEN UK INTERNATIONAL AWARD. |
| 2016 | Dr.C Palaniappan receives the Excellence Award from Shri.Piyush Goyal, Hon’ble Minister for Power,coal and New & Renewable energy for contribution to Solar CST technologies. |
| 2017 | 1. Completion of 12500 m2 Solar air heating system. 2. Completion of 300000 LPD Solar water heating system. 3. Completion of 2 MW Solar SPV power. |
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