The North American Electric Reliability Corporation (NERC) is like a referee for the electricity industry. They make sure that electricity companies in the United States and Canada (the two countries that make up North America) are following the rules called standards. They also make sure that companies don't do anything that could cause problems with the electricity. For example, if a company is making a change to a part of the electricity system, NERC can check it to make sure it won't cause problems for other companies or for people who use the electricity. This helps keep the electricity running safely and smoothly.