Power plant explosion in India: 26 dead
More than 100 were injured in the accident at the publicly owned National Thermal Power Corporation's Unchahar plant in Rai Bareli.
The corporation launched an investigation and Chief Minister Yogi Adityanath said the families of those killed would be paid the equivalent of around $3,125 in compensation.
Broadcaster NDTV reported that a boiler pipe explosion led to a massive fire and a large dust cloud that hampered rescue efforts.
Industrial accidents are fairly common in India, where safety regulations are often flouted.