The sixth mission of the X-37B Orbital Test Vehicle is scheduled to launch on May 16, 2020. As reported by Air Force Secretary Barbara Barrett, aboard will be an experiment from the the U.S. Naval Research Laboratory will transform solar power into radio frequency microwave energy which could then be transmitted to the ground. Link to the full U.S. Space Force article is below.
Hat tip to Elisa Shebaro for posting this article on her FB page and letting us know!

Here’s a link to an additional “X-37B’s Next Mission To Demo Space-Based Solar Power” article from the Breaking Defense website: