** GreenHy2 H2G.AX doubles in value to A$0.012, highest since August 31, 2023
** Clean energy co signs contract with European technology supplier H2Core for storage solution technologies
** Says new agreement includes access to advanced battery storage systems that are competitive on a CAPEX basis to traditional batteries and have much lower operating costs and significantly longer life
** Co did not disclose financial details of deal
** Around 15 mln shares traded in stock's busiest session since January 30
** H2G gains 300% YTD
(Reporting by Manasi Dasa in Bengaluru)
((Manasi.DasaSundeep@thomsonreuters.com;))