| 31/10/19 | 07:00:05 | 31 Oct 2019 | | Acquisition of Green Highland Renewables | RNS |
| 19/09/19 | 08:00:07 | 19 Sept 2019 | | Interim Results | RNS |
| 09/09/19 | 08:00:08 | 9 Sept 2019 | | Plan for World's Largest Ocean Powered Data Centre | RNS |
| 06/09/19 | 08:00:07 | 6 Sept 2019 | | Decarbonisation agreement with AEL | RNS |
| 06/08/19 | 08:00:12 | 6 Aug 2019 | | Launch of Bond | RNS |
| 26/07/19 | 16:10:58 | 26 Jul 2019 | | Result of AGM | RNS |
| 26/07/19 | 08:00:03 | 26 Jul 2019 | | Successful Decommissioning of SeaGen | RNS |
| 18/07/19 | 08:00:09 | 18 Jul 2019 | | Holding(s) in Company | RNS |
| 15/07/19 | 08:00:05 | 15 Jul 2019 | | Uskmouth 220MW Conversion Project Update | RNS |
| 10/07/19 | 08:00:03 | 10 Jul 2019 | | MeyGen Operational Update | RNS |
| 28/06/19 | 08:00:05 | 28 Jun 2019 | | Acquisition of Green Highland Renewables Update | RNS |
| 28/06/19 | 08:00:04 | 28 Jun 2019 | | Preliminary Results Announcement | RNS |
| 18/06/19 | 11:10:13 | 18 Jun 2019 | | Update on Proposed Acquisition of GHR | RNS |
| 14/05/19 | 08:00:12 | 14 May 2019 | | Technology Partnership Agreed with GE | RNS |
| 29/03/19 | 12:10:49 | 29 Mar 2019 | | Result of Placing and PrimaryBid Offer | RNS |
| 28/03/19 | 16:31:03 | 28 Mar 2019 | | PrimaryBid.com Offer | RNS |
| 28/03/19 | 16:30:46 | 28 Mar 2019 | | Proposed Placing | RNS |
| 11/02/19 | 07:00:06 | 11 Feb 2019 | | MeyGen Update | RNS |
| 22/01/19 | 07:00:04 | 22 Jan 2019 | | Directorate Change and Appointment of J.P. Morgan | RNS |
| 19/12/18 | 07:00:04 | 19 Dec 2018 | | Canadian FORCE Facility | RNS |
| 19/12/18 | 07:00:03 | 19 Dec 2018 | | MeyGen Operational Update | RNS |
| 05/12/18 | 07:00:03 | 5 Dec 2018 | | EUR1 million Grant Award to SIMEC Atlantis | RNS |
| 23/11/18 | 16:36:06 | 23 Nov 2018 | | Acquisition of SIMEC Green Highland Renewables | RNS |
| 21/11/18 | 12:00:03 | 21 Nov 2018 | | French Tidal Power Agreement Signed | RNS |
| 20/11/18 | 14:05:39 | 20 Nov 2018 | | Second Price Monitoring Extn | RNS |
| 20/11/18 | 14:00:24 | 20 Nov 2018 | | Price Monitoring Extension | RNS |
| 20/11/18 | 11:05:34 | 20 Nov 2018 | | Second Price Monitoring Extn | RNS |
| 20/11/18 | 11:00:16 | 20 Nov 2018 | | Price Monitoring Extension | RNS |
| 20/11/18 | 09:06:02 | 20 Nov 2018 | | Second Price Monitoring Extn | RNS |
| 20/11/18 | 09:00:35 | 20 Nov 2018 | | Price Monitoring Extension | RNS |
| 20/11/18 | 07:00:14 | 20 Nov 2018 | | Heads of Terms Signed with Equitix | RNS |
| 06/11/18 | 07:00:06 | 6 Nov 2018 | | Uskmouth FEED Contract | RNS |
| 05/11/18 | 07:00:05 | 5 Nov 2018 | | Uskmouth Power Station Conversion Project Update | RNS |
| 30/10/18 | 07:00:05 | 30 Oct 2018 | | MeyGen Update | RNS |
| 30/10/18 | 07:00:04 | 30 Oct 2018 | | Joint Venture with Development Agency of Normandy | RNS |
| 22/10/18 | 08:00:07 | 22 Oct 2018 | | Appointment of Chief Operating Officer | RNS |
| 22/10/18 | 08:00:07 | 22 Oct 2018 | | MeyGen Operational Update | RNS |
| 24/09/18 | 08:00:10 | 24 Sept 2018 | | Interim Results | RNS |
| 03/09/18 | 08:00:09 | 3 Sept 2018 | | General Newport Update | RNS |
| 13/08/18 | 08:00:03 | 13 Aug 2018 | | Operational Update | RNS |
| 11/07/18 | 08:00:06 | 11 Jul 2018 | | MeyGen Phase 1A Operational Update | RNS |
| 27/06/18 | 09:59:50 | 27 Jun 2018 | | Holding(s) in Company | RNS |
| 22/06/18 | 10:27:19 | 22 Jun 2018 | | Holding(s) in Company | RNS |
| 20/06/18 | 16:59:26 | 20 Jun 2018 | | Holding(s) in Company | RNS |
