<p>Generation figures for individual power stations are collected under commercial confidentiality agreements. Aggregate totals for electricity generated from hydro in Wales are published in an Energy Trends article available at <a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.gov.uk%2Fgovernment%2Fstatistics%2Fenergy-trends-december-2023-special-feature-article-electricity-generation-and-supply-in-scotland-wales-northern-ireland-and-england-2018-to-20&data=05%7C02%7CParliamentary.PQ%40energysecurity.gov.uk%7Cb0e0239599f4429a06b008dc2630a57c%7Ccbac700502c143ebb497e6492d1b2dd8%7C0%7C0%7C638427237573926181%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=jLt71%2FYtYgYxwhBLjgD3htMyNxrEE%2F98QWOHtK05UL4%3D&reserved=0" target="_blank">https://www.gov.uk/government/statistics/energy-trends-december-2023-special-feature-article-electricity-generation-and-supply-in-scotland-wales-northern-ireland-and-england-2018-to-2022</a></p><p> </p><p>The Department does not collect power station revenue data.</p>