There are several synonyms that could be used for the term "power generation group." These include electricity provider, energy producer, power company, utility company, and energy supplier. Each of these synonyms can be used to refer to a group or company that generates electricity and distributes it to customers. The term "electricity provider" is often used when referring to a company that specifically supplies electricity to consumers, while "energy producer" may be more generally used to describe a company that creates energy from a variety of sources. "Utility company" is a broader term that can refer to a company that provides multiple services, including electricity, gas, and water, while "energy supplier" specifically refers to a company that supplies energy to customers.