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| Period | Event | Printed figure |
|---|---|---|
| Jul 2019 | Agreement to lease a new-build manufacturing headquarters at PLP Bessemer Park, Sheffield. | 134,000 sq ft. Capacity up to 1,000 MW per year. About 140 office seats. |
| Jan 2021 | Fit-out reached practical completion. Offices expanded, stack manufacturing enlarged, ATEX-rated factory-acceptance testing space added. | 5 MW on-site power supply. |
| 17 Aug 2021 | Official opening of Bessemer Park. UK Hydrogen Strategy launched at the site. | 1,000 MW per year factory as then printed. |
| FY 2022 results | Second UK factory at Aviation Park cancelled. Capital redirected to Bessemer Park expansion. | Near-term plan: about 700 MW available, then up to 1.5 GW. Later filings still cite 1 GW Trident. |
| 3 Apr 2023 | Additional factory and office lease (Unit 3) to create a dedicated R&D and product validation centre and to consolidate Sheffield sites onto Bessemer Park. | More than 83,000 sq ft. Initial lease 15 years. Occupy early 2024. |
| FY 2023 prelims | Testing capacity at Bessemer Park raised, then a further step-up in site power for factory acceptance testing. | 5.0 MVA to 7.5 MVA already available. 30 MVA targeted by end 2024 (300% increase vs the prior 5 MW / 5.0 MVA supply). |
| 30 Apr 2025 | Year-end capital commitments still include Unit 3 fit-out and the power upgrade. Registered office remains 2 Bessemer Park, Sheffield S9 1DZ. | £4.0m capital commitments, of which £2.2m Unit 3 and power upgrade. |
| 9 Apr 2026 | Chronos automated stack line to be built in existing Sheffield facilities, co-located with the Trident production line. | 1,000 MW per year Chronos capacity. Commercial operation targeted 2028. |
| Period | Project | MW | Status as printed |
|---|---|---|---|
| Jul 2022 | REFHYNE I, Shell Rhineland, Germany | 10 | Began production. Follow-on is REFHYNE II. |
| FY 2025 (Yara) | Yara, Porsgrunn, Norway | 24 | Inaugurated. Green hydrogen to green ammonia. Largest PEM plant then in operation in Europe. |
| FY 2025 (Lingen pilot) | RWE Lingen pilot, Germany | 4 | Commissioned. |
| Aug 2024 / FY 2025 | REFHYNE II, Shell Wesseling / Rhineland, Germany | 100 | Contract signed August 2024. Under construction at FY 2025 year-end. |
| H1 FY 2026 (Lingen 1) | RWE Lingen 1 (GET H2 Nukleus), Germany | 100 | All 100 MW of Trident stacks and skids installed and pressure-tested on time. |
| H1 FY 2026 (Lingen 2) | RWE Lingen 2, Germany | 100 | All Trident skids installed. 40% of stacks installed. |
| H1 FY 2026 (Leuna) | Leuna, Linde, Germany | n/a this print | Nearing completion. H1 FY 2026 RNS does not restate a MW figure. |
| 9 Apr 2026 | Company-level delivery and reservation snapshot | about 500 in delivery; more than 550 reserved | Chronos funding RNS. Not a plant-by-plant table. |
| 4 Aug 2026 | RWE Lingen GET H2 Nukleus, first hydrogen to Evonik Marl | 200 (two 100 MW plants) | Initial green hydrogen produced and moved about 120 km by pipeline. Ramp toward full 200 MW commercial operation. |
| Period | Status | |
|---|---|---|
| Jul 2019 | Lease at PLP Bessemer Park, Sheffield. Electrolyser manufacturing capacity up to 1,000 MW per year. 134,000 sq ft. | Lease signed. Building completion then expected Q4 2019. |
| Jan 2021 | 1,000 MW per year Gigafactory practical completion. Dedicated ATEX factory-acceptance testing space. 5 MW on-site power supply. | Handover from contractors. Production started. |
| 17 Aug 2021 | Official opening of the Bessemer Park factory. Capacity printed as 1,000 MW per year. | Opened by the then Business Secretary with the UK Hydrogen Strategy launch. |
| FY 2022 results | Plan to ramp available Bessemer Park capacity to about 700 MW over the next six months. Further expansion to 1.5 GW planned within two financial years. | Plan only. Aviation Park second UK factory cancelled. 2026 filings still cite a 1 GW per year Trident line. |
| Mar to Apr 2023 | Factory testing power: 5.0 MVA, then 7.5 MVA available, with 30 MVA targeted by end 2024. Additional Unit 3 lease more than 83,000 sq ft for R&D and product validation. | Power upgrade and Unit 3 fit-out still appear in FY 2025 capital commitments. |
| H1 FY 2026 | New autostacker manufacturing line received and installed. Stack assembly capability of over 2,000 MW. | Assembly-line capability, not a restated plant nameplate. |
| 9 Apr 2026 | Chronos next-generation stack line: 1,000 MW per year annual capacity at existing Sheffield facilities. Total investment up to £120m, enabled by £86.5m UK government support (£40m GBE equity plus £46.5m DESNZ grant). Commercial operation targeted 2028. Trident remains in production for contracted customers and service agreements. | Funded. Not yet in commercial operation. |
| 9 Jul 2026 | DESNZ £46.5m grant formally awarded for the Chronos manufacturing line. | Grant award follows the 9 April 2026 intention-to-award letter. |