Energy Saving Trust published an analysis of more than 1 million heat pump, battery, solar and tariff combinations suggesting that the biggest energy bill savings don't come from a single technology.

Energy Saving Trust is an independent organisation dedicated to promoting energy efficiency, low carbon transport and sustainable energy use. We aim to address the climate emergency and deliver the wider benefits of clean energy as we transition to net zero. We empower householders to make better choices, deliver transformative programmes for governments and support businesses with strategy, research and assurance - enabling everyone to play their part in building a sustainable future. Climate change knows no boundaries and is impacting people across the world. Energy Saving Trust is working to address the climate emergency for everyone, whatever their age, race, gender or background. We recognise and value the qualities that make people unique and the variety of talent and experience that diversity brings. Read our community guidelines: https://energysavingtrust.org.uk/about-us/social-media-house-rules/ Office hours: Monday to Friday 9am - 5.30pm