The UK Government's Clean Maritime Plan commits the UK maritime sector to reaching net-zero greenhouse gas emissions by 2050. The principal funding mechanism is the Clean Maritime Demonstration Competition (CMDC), administered by Innovate UK on behalf of the Department for Transport (DfT). CMDC grants fund zero-emission vessel demonstrators, feasibility studies, port charging and bunkering infrastructure, and technology trials.
For operators considering their first electric, hybrid, hydrogen or ammonia-fuelled commercial vessel, CMDC grants can cover 40–70% of eligible project costs - significantly reducing the commercial finance required. Doulton Bridging Finance arranges the commercial finance component alongside CMDC and other clean maritime grants.
Eligible Vessel Types and Projects
CMDC funding has supported a wide range of zero-emission maritime projects. Eligible vessel types and technologies include:
- Battery-electric ferries: Domestic passenger ferries with full battery-electric propulsion. Several Scottish island ferry operators have received CMDC grants.
- Hydrogen fuel cell CTVs: Crew transfer vessels with hydrogen fuel cell propulsion for offshore wind farm support. Zero-emission CTVs are increasingly required by offshore wind developers.
- Hybrid-electric fishing vessels: Commercial fishing vessels with hybrid diesel-electric propulsion reducing fuel consumption by 20–40%.
- Ammonia-fuelled vessels: Larger offshore support vessels and tankers piloting ammonia as a zero-carbon fuel.
- Electric inland waterway craft: Canal and river cargo vessels, electric tourist boats and passenger trip boats.
- Shore power and bunkering infrastructure: Port-side electrical charging and hydrogen/ammonia bunkering for clean vessels.
Grant Tiers and Amounts
| Project Type | Grant Tier | Typical Award | Funding % |
|---|---|---|---|
| Feasibility study | Tier 1 | £25,000–£100,000 | Up to 70% |
| Technology demonstrator | Tier 2 | £100,000–£500,000 | 40–60% |
| Vessel demonstrator | Tier 3 | £500,000–£1,500,000 | 40–50% |
| Port/bunkering infrastructure | Tier 4 | £250,000–£2,000,000 | 30–50% |
Grant amounts and tiers vary by CMDC round. Always check current Innovate UK guidance at the time of application.
Timeline: Grant Application to Vessel Delivery
- 1Months 1–2: Feasibility and registration - Identify eligible project, register on Innovate UK portal, prepare outline business case.
- 2Months 2–4: Full application - Detailed project plan, vessel specification, supplier quotes, expected outcomes (CO₂ reduction, commercial viability).
- 3Months 4–6: Assessment - Innovate UK/DfT panel assessment. Successful applicants receive grant offer letter.
- 4Months 6–8: Finance arrangement - DBF arranges commercial co-finance. Grant offer supports lender confidence in project viability.
- 5Months 8–24: Build/conversion - Vessel construction or conversion. Grant paid against milestones.
- 6Months 24–36: Demonstrator period - Vessel operates commercially; data gathered and reported to DfT/Innovate UK.
Combining CMDC Grants with Commercial Finance
For a £2.5m zero-emission CTV newbuild, a typical funding stack might look like:
- CMDC Tier 3 grant: £1,000,000 (40%)
- Commercial asset finance (HP): £1,250,000 (50%)
- Operator equity: £250,000 (10%)
The grant offer letter from Innovate UK significantly strengthens the commercial finance application - it demonstrates government validation of the project and provides a degree of project risk mitigation for the lender. DBF uses the grant offer as a key element of the finance package.
The UK's Clean Maritime Landscape
Beyond the CMDC, the clean maritime sector in the UK is supported by several overlapping initiatives:
- Maritime Research and Innovation UK (MarRI-UK): Research funding for clean maritime technology development.
- UKRI Net Zero Shipping: Research council grants for decarbonisation of UK shipping.
- Green Shipping Corridor grants: Targeted at specific shipping routes being piloted for zero-emission operations.
- IMO Carbon Intensity Indicator (CII): International regulation driving demand for fuel-efficient vessels - increases commercial case for clean maritime investment.