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Drax received record annual subsidies of £999 million in 2025.
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" Drax power station is likely to remain the UK’s largest emitter out to 2030. Although Drax generation is due to halve from 2027, Drax will continue to emit more CO2e than the second-largest emitter. "
https://ember-energy.org/latest-insights/uks-largest-emitter...
The giant battery storage array would probably come from batteries made in China, another big CO2 emitter.