Tokyo Gas Co. is receiving inquiries from potential customers who are interested in buying a fuel cell system at any price and want to know when the company is going to sell one.

"We've certainly decided to market it but haven't made anything definite, such as its price or product name," said Hiroaki Kobayashi, head of the planning group at the research and development headquarters of Tokyo Gas.

"Furthermore, the number of units to be marketed will be limited at first," he said.