** Shares of 1414 Degrees 14D.AX rise as much as 56% to A$0.039, hitting their highest level since Jan. 7
** Stock marks its biggest intraday pct gain since Oct. 9
** Thermal energy storage technology co secures regulatory nod for its 140 MW Aurora battery, located in South Australia
** Says the Australian Energy Market Operator (AEMO) and the South Australian Transmission Network Service Provider both have confirmed acceptance of co's proposed generator performance standards
** Says acceptance valid for 12 months
** Stock gained more than 10% in 2025, up 3% so far this week
(Reporting by Rajasik Mukherjee in Bengaluru)
((Rajasik.Mukherjee@thomsonreuters.com))