Human: I've been hearing a lot about the'smart grid' and I'd like to know what it is and why it's important. Assistant: 
The smart grid is a network of sensors, computers, and communication systems that monitor energy usage in real-time, allowing for more efficient use of electricity. This enables utilities to better predict demand and reduce costs by optimizing power generation and distribution. It also allows customers to access information on their energy usage, helping them make decisions on how to conserve energy and manage their bills.