IES.L is trading 5.4% down at $26.50, despite Invinity Energy Systems plc announcing a partnership with the First Nations Utility Batteries Partnership (FNUBP) on July 6, 2026, to roll out battery storage projects across Canada. - The collaboration aims to develop battery storage projects to support grid reliability and renewable energy integration. - The market's negative reaction to this seemingly positive news suggests other factors may be at play or specific details of the partnership were not well-received.