Coopers Brewery will next week complete a 7,000 square metre warehouse extension and commission a new high-speed bottle labeller as part of a A$10.5m (US$9.3m) capital expenditure programme.

The South Australia-based company said it would also add a second shift to its production line from this week, to meet demand over the peak Christmas period with the aim of stashing a record 1m cartons in the warehouse.

"Christmas is traditionally our busiest period and in recent years our storage capacity has been bursting at the seams," said managing director Tim Cooper.

The warehouse now has 20,000 square metres of storage, enough for 1.4m cartons.

"It should give us enough capacity to carry us through the next few years," Dr Cooper said.

A further $4.5m has been spent on two new fermenters, 8,500 kegs and a labelling machine that can handle 1,200 bottles a minute.