Colexon Energy
German photovoltaic company (formerly Reinecke + Pohl Sun Energy AG) active in solar wholesale, project development and solar park operation, renamed 7C Solarparken AG in 2015.
Last updated September 26, 2026
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Overview
Colexon Energy AG was a German photovoltaic company headquartered in Hamburg. Its origins trace to Reinecke + Pohl Sun Energy AG, founded by Jörn Reinecke and Gerd-Jürgen Pohl, which went public in March 2005 and initially focused on turnkey photovoltaic project development. In 2007 the company renamed itself Colexon Energy AG and expanded into photovoltaic wholesale and solar park operation. It distributed solar modules from suppliers such as First Solar and Masdar PV. In 2009 it acquired the Danish solar park operator Renewagy A/S with a 43 MWp portfolio. After cuts to solar subsidies, the company faced financial difficulties from 2011, halving revenue in the first half of 2011 compared to the previous year, closing locations in Mainz and Imola, and selling solar parks. By the end of 2013 its solar park portfolio was about 67 MWp. In 2014, after a failed first attempt in 2013, Colexon shareholders approved a reverse takeover of 7C Solarparken NV, making it a wholly owned subsidiary. In January 2015 the company was renamed 7C Solarparken AG and its headquarters moved from Hamburg to Bayreuth. The Colexon Energy brand thus ceased to exist as an independent entity, its business continuing under 7C Solarparken AG, which today operates solar parks in Germany and Belgium.
History
Colexon Energy AG was a German photovoltaic company headquartered in Hamburg. Its predecessor, Reinecke + Pohl Sun Energy AG (originally Reinecke + Pohl Solare Energien GmbH), was founded by Jörn Reinecke and Gerd-Jürgen Pohl and went public in March 2005. The company initially focused on turnkey photovoltaic project development. In spring 2005 it acquired Nastro Umwelttechnik GmbH, a provider of turnkey photovoltaic systems for agricultural and medium-sized businesses, for EUR 8.6 million. A few months later it acquired Maaß Regenerative Energien GmbH, a planning and sales company for photovoltaic systems, for EUR 10.4 million. From September 2007 the two units Nastro and Maaß operated under Colexon GmbH. On 18 December 2007 an extraordinary general meeting resolved to rename Reinecke + Pohl Sun Energy AG to Colexon Energy AG, registered in the commercial register on 25 January 2008. Colexon Energy AG was initially active in photovoltaic wholesale and project development, and later also in solar park operation. In wholesale it distributed solar modules from First Solar and Masdar PV, among others. In the second half of 2008 the operation of its own solar parks became a stronger focus because higher margins could be achieved there. At the end of 2008 plans emerged to merge Colexon Energy AG with its major shareholder, the Danish solar park operator Renewagy A/S, into a Colexon SE. In August 2009 Renewagy A/S was acquired with a solar park portfolio of 43 MWp, but the planned merger and renaming did not occur. After cuts to solar subsidies, the company faced financial difficulties from 2011; revenue in the first half of 2011 halved compared to the previous year. As part of a restructuring, locations in Mainz and Imola were closed and numerous employees were laid off. Subsequently, solar parks bundled in project companies were sold, including to 7C Solarparken NV. The solar park portfolio of Colexon Energy AG was about 67 MWp at the end of 2013. In December 2012 plans for 7C Solarparken NV to take over Colexon Energy AG were first announced. This failed initially in February 2013 at an extraordinary general meeting of Colexon due to lack of shareholder approval. A year later, in April 2014, Colexon shareholders approved the entry into 7C Solarparken NV with the required majority. A so-called reverse acquisition followed, in which 7C Solarparken NV became a 100% subsidiary of Colexon Energy AG. The purchase price was paid through a capital increase at Colexon and issuance of new shares to former shareholders of 7C Solarparken NV, who thereby acquired a clear majority of shares in Colexon Energy AG. Future focus was stated as ownership and operation of photovoltaic plants in Germany. In January 2015 Colexon Energy AG was renamed 7C Solarparken AG and its headquarters moved from Hamburg to Bayreuth, citing proximity to owned solar parks. In 2017 the last Italian solar park was sold, and the company has since focused on the German market. In spring 2018 the photovoltaic project developer Amatec was acquired. As of the end of 2023, 7C Solarparken AG's portfolio comprised plants with a total capacity of 459 MWp, mostly in Bavaria, Saxony-Anhalt and Mecklenburg-Vorpommern, and it also operates wind energy plants and provides operational management for third parties.
- 2018
In spring 2018, photovoltaic project developer Amatec is acquired.
- 2017
Last Italian solar park sold; company focuses on German market.
- 2015
In January 2015, renaming to 7C Solarparken AG and headquarters move from Hamburg to Bayreuth.
- 2014
In April 2014, Colexon shareholders approve entry into 7C Solarparken NV; reverse acquisition follows.
- 2013
In February 2013, the takeover plan fails at an extraordinary general meeting due to lack of shareholder approval.
- 2013
Solar park portfolio of Colexon Energy AG is about 67 MWp at the end of 2013.
- 2012
In December 2012, plans for 7C Solarparken NV to take over Colexon Energy AG are first announced.
- 2011
After cuts to solar subsidies, company faces financial difficulties; revenue in H1 2011 halves year-on-year.
- 2011
Restructuring: locations in Mainz and Imola closed, numerous employees laid off.
- 2009
In August 2009, Renewagy A/S with a 43 MWp solar park portfolio is acquired.
Products and positioning
German photovoltaic company focused on solar wholesale, project development and solar park operation.
Photovoltaic modules (wholesale)
Distributed solar modules from First Solar and Masdar PV, among others.
Turnkey photovoltaic systems
Project development of turnkey photovoltaic plants.
Solar park operation
Ownership and operation of solar parks, with a portfolio of about 67 MWp by end of 2013.
Sources3 sources
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