Energy Days to be held virtually on May 19 and 20 Energy Days, an annual conference that brings together professionals working in all areas of energy, will occur virtually on May 19 and 20, 2021, and explore topics that range from energy technology to energy policy and equity.Image: Brenna Buck Energy Days to be held virtually on May 19 and 20 April 26, 2021 UNIVERSITY PARK, Pa. — Energy Days, an annual conference that brings together professionals working in all areas of energy, will be held on May 19 and 20. This year’s event will be virtual, and it is free and open to the public. Registration is now open.