Turnover at the Nairobi Securities Exchange on Tuesday rose to 9.8 million U.S. dollars on a volume of 46 million shares, up from 8.7 million worth 2.1 million dollars in the previous session, boosted by vibrant trading of energy stocks.

Electricity generator KenGen was the top traded stock after moving 15.4 million shares at a declined price of 0.09 dollars.

Coming second was Kenya Power, a distributor of electricity, which traded 10.7 million shares at a 3-percent high of 0.10 dollars.

Equity Bank and Kenya Commercial Bank followed respectively at position three and four after trading 5.5 million and 3.9 million shares at 0.43 dollars and 0.44 dollars.

Safaricom, Kenya's leading telecom, closed the list of the best five traded stock after transacting 2.9 million shares at unchanged price of 0.24 dollars. Monday, the telecom traded 1.4 million shares.

The benchmark NSE 20 Share Index sustained an upward trend going up 6 points to close at 4,013.71. On Monday, it gained 14.79 points to at 4,007.55.

Among the stocks that lifted up the index on Tuesday were Kenya Power, Kengen, British American Tobacco and Standard Chartered Bank, which went up between 0.1 percent and 1 percent.