** Australian energy firms .AXEJ fall as much as 1.8%, their biggest intraday pct loss since May 5

** Oil prices edged down with investors eyeing the outcome of Iran-U.S. nuclear talks and key economic data due from China to assess the impact on its commodities demand O/R

** Majors Woodside WDS.AX and Santos STO.AX slip around 1%

** New Hope NHC.AX is the top loser in the sub-index on triming its FY25 coal sales forecast by 2%

** AXEJ set for three sessions of consecutive losses

** Sub-index down 26.4%, YTD

(Reporting by Kumar Tanishk in Bengaluru)

((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk;))