By Melanie Burton and Sameer Manekar

MELBOURNE (Reuters) -BHP Group will focus on growing its copper business through existing and incoming projects after its failed attempt to buy Anglo American, it said as it reported a better-than-expected 2% rise in annual underlying profit.

The world's biggest listed miner is pushing hard to expand in copper, given the commodity's outsize role in the energy transition and a tougher outlook for its top revenue generator, iron ore, as China's economic growth slows and supply rises.

BHP walked away in May from its blockbuster $49 billion bid for Anglo that would have significantly boosted its copper business and is now turning to other options.

"I was very clear at the time, it wasn't Plan A for us. Plan A is everything that you see outlined in these results," BHP CEO Mike Henry told reporters. "We continue with Plan A."

BHP unveiled more details around its spending and growth plans for key copper provinces in Chile, South Australia and Argentina after it posted an underlying attributable profit for the year ended June 30 of $13.66 billion, which excludes exceptional items.

That beat a Visible Alpha consensus of $13.26 billion and was ahead of the $13.42 billion profit a year ago, though on a bottom-line level it took a $5.7 billion hit from impairments to its nickel business in Western Australia and the 2015 dam collapse at Samarco in Brazil.

BHP shares were about 2% higher in early trade, outpacing the flat Australian benchmark index.

"They have clearly laid out capex and growth expectations for copper where they are still looking at copper as a key commodity, clearly," said Andy Foster, a portfolio manager at Argo Investments. "It's just been so hard to execute large-scale acquisitions so you have to make the most of your existing assets and then look at other opportunities."

Copper accounts for about 30% of the miner's profits but that is set to increase. In South Australia it is assessing options to produce more than 500,000 metric tons of copper annually in the early 2030s, up from 322,000 tons in the last financial year.

BHP said last month it would jointly take over Filo Corp for its copper growth projects near the Argentine-Chilean border, paying C$4.5 billion ($3.25 billion) with Canada's Lundin Mining.

UK regulations bar BHP from making another offer for Anglo until November, should it still want to do so. Henry said BHP had no interest in a separate purchase of Anglo's coking coal assets.

Still, BHP said it was keeping its balance sheet flexible.