The solar farm will be located near the town of Iwade, in Kent.
It will generate enough electricity to power up to 5,400 homes in the UK; the planning consent obtained enables the firm to commence construction in November 2014.
In September, OPDE obtained permission to develop a 10.8MW solar farm in Crewkerne.
The two projects form part of OPDE development pipeline in the UK, of more than 200MW.
With the new solar farm and other operating solar facilities, OPDE is on track to meet its objective of connecting 100MW in photovoltaic capacity in the UK by March 2015.