Phoenix Solar AG is a German photovoltaics company involved in the systems integration business. Specifically, the company designs, builds and operates large photovoltaic power plants and is a specialist wholesaler of photovoltaic systems, solar modules and related equipment.

Phoenix Solar AG emerged out of an initiative of the "Bund der Energieverbraucher e.V" (English: "Cooperative of Energy Consumers"), which was originally started in 1994. The company was officially founded on November 18, 1999 and on January 7, 2000 it was entered into the commercial register of companies. At the Annual General Meeting on May 25, 2007, the shareholders approved a change of name from "Phönix SonnenStrom AG" to "Phoenix Solar AG". Phoenix Solar AG has its headquarters at Sulzemoos northwest of Munich, Germany and sales offices in Germany, as well as subsidiaries in Italy, Spain, Greece, Singapore and Australia.

Since November 18, 2004, the "Phoenix SonnenAktie" (shares of the company) have been traded on the OTC stock exchanges in Munich, Frankfurt, Berlin / Bremen and Stuttgart. With the start of share trading on the M: access exchange (the segment of the Munich Stock Exchange dedicated to small and mid-cap companies) on July 27, 2005, Phoenix Solar AG gained access to additional capital and a wider investing audience. On June 27th, 2006, the shares of Phoenix officially were listed and started trading on the Frankfurt Stock Exchange (Prime Standard). Since March 2008 Phoenix Solar shares are also a constituent of the TecDAX stock market index.