Complex sentence: As of August 2013, the London Array in the United Kingdom is the largest offshore wind farm in the world at 630 MW, followed by the Greater Gabbard Wind Farm (504 MW), also in the UK.
Split into simpler sentences: As of August 2013 the London Array in the United Kingdom is the largest offshore wind farm in the world at 630 MW. This is followed by the Greater Gabbard Wind Farm (504 MW), also in the UK.