Bulgaria is focusing on energy storage in its energy transition, investing in battery production plants and battery energy storage systems (BESS) to promote the establishment of hydrogen valleys. Sofia-based startup Hydrogenera has signed its first contract for a 1-MW electrolyser capable of producing 200 cubic meters of hydrogen per hour, or 436 kilograms of hydrogen per day. The company is part of the European Clean Hydrogen Alliance and the Hydrogen Global Initiative. The 1 MW electrolyser is expected to be delivered by the beginning of the second quarter at the latest. Hydrogenera has a 200 kW flagship model with an efficiency of 85%. The company raised €2 million a year ago and is considering an initial public offering next year.