[Plugin: Event Organiser] Excerpts on Events List

By event list do you mean the event list widget/shortcode? If so, not yet, but the next update will include this:
https://www.harriswebsolutions.co.uk/event-organiser/forums/topic/excerpts-shortcode-and-different-color-past-events-in-calendar/

Otherwise, the venue, taxonomy, event archive template etc can be edited to display the excerpt of an event.

Thanks for your reply Stephen. It’d be great to have excerpts on your shortcodes, can’t wait for the next update.:)