Suntory is to increase its Japanese whisky storage capacity by a further 12% with a JPY5bn (US$41m) investment in a new warehouse, a report has said.

The company's domestic spirits unit will start work on a new building this Spring at its Omi cellar in Shiga Prefecture, according to the Nikkei news agency last week. The 6,000-square-metre building will be able to hold 130,000 casks and is expected to open in 2017.

It will take Suntory's storage capacity for unblended whisky to 1.26m casks, Nikkei said.

The plans follow expansion projects in 2013 and last year that increased Suntory's storage capacity by a combined 40% as the company upped efforts to penetrate the US with Japanese whisky in the wake of its Beam Inc takeover, according to Nikkei.

In July, Suntory's international spirits unit, Beam Suntory, launched a no-age-statement expression of its Hibiki whisky brand into global markets including Australia, the US, UK, France and Germany.