In fact, the school might even profit from solar energy by selling excess energy to the utility companies. This surplus energy can be sold as Renewable Energy
Credits, known as RECs.
What does the word surplus mean as it is used in the passage?

can you be more do you have options/ if so, you can put it in the chat or edit your question (

well, i hope this at least : ) :

noun: a temporary state of mind or feeling.

adjective: (especially of music) inducing or suggestive of a particular feeling or state of mind.

examples:

hope this ! : )