What is behind the meter customers?

Could you elaborate on the concept of "behind the meter customers" in the context of cryptocurrency and finance? Are they individuals or businesses that are utilizing a specific type of service or technology that allows them to manage their energy consumption, transactions, or finances in a more efficient or decentralized manner? Alternatively, is this term referring to a group of users who are leveraging blockchain technology or other innovative solutions to bypass traditional intermediaries and transact directly with each other? Clarifying this definition would help me better understand the context and implications of "behind the meter customers" in the world of cryptocurrency and finance.