Data sources that informed our impact assessment.Several of these documents were obtained via Freedom of Information requests. ⚡ Ofgem’s views on electric vehicle charger costs⚡ Briefing for Treasury given by Ofgem in October 2025⚡ Ofgem presentation on TCR code modification⚡ Ofgem Teach-in on TCR⚡ Ofgem briefing on EVs and Grid Tariffs🔌 Letter from NESO saying they hold no impact estimates📊 UK Energy Tariff Breakdowns