TOKYO, Sept 8 (Reuters) - Japan's Nikkei stock average rose 0.7 percent on Tuesday, with Showa Shell Sekiyu rising on plans to build a new solar cell plant, but gains were limited as the yen's firmness weighed on exporters.
The Nikkei rose 72.29 points to 10,393.23.
The broader Topix index rose 0.2 percent to 946.40. (Reporting by Masayuki Kitano)