Kate Gilmartin, Chief Executive at the British Hydropower Association and an expert in renewable and community energy, discusses the multifaceted benefits of hydropower. She explores the various technologies, especially pumped storage, as 'water batteries' supporting grid resilience. Kate highlights challenges in investment and planning while advocating for innovations like the cap and floor mechanism. The conversation also touches on the exciting potential of tidal range energy and the importance of local energy solutions in driving a sustainable energy transition.