UK energy storage firm Invinity Energy Systems plc (<a href="https://www.londonstockexchange.com/stock/IES/invinity-energy-systems-plc/company-page" target="_blank">AIM:IES</a>) announced it has raised GBP 57.38 million (USD 73.3m/EUR 67.4m) gross from a share offering, planning to use the proceeds for both organic and inorganic growth investments.