Complex sentence: Oil and Natural Gas Corporation (ONGC) has announced its plans to tap offshore wind power along the Indian coastline, and in June of 2010, several major global corporations including Areva, Siemens and GE announced their plans to explore offshore wind opportunities in India.
Split into simpler sentences: Oil and Natural Gas Corporation (ONGC) has announced its plans to tap offshore wind power along India coastline. In June 2010, big corporations like Areva, Siemens and GE announced their plans to explore offshore wind power in India.