Marine Renewables UK: Coastal Property Legal Guide

Overview

Marine renewable energy, often shortened to MRE, refers to electricity produced from the movement and properties of the sea. That includes tidal stream devices that sit on the seabed, tidal range schemes using barrages or lagoons, wave energy converters that harness surface motion, and smaller-scale technologies that capture energy from ocean currents or the difference in salinity where rivers meet the sea.

Offshore wind is usually treated as a related but distinct category, although many of the same consenting rules apply. The UK has set substantial offshore generation targets for the coming years as part of its wider energy strategy, and marine renewables are expected to play a growing role alongside wind and solar.

For coastal commercial property owners, the relevance is practical rather than abstract: these projects need land for substations and cable landfall, seabed rights from the Crown Estate, environmental consents, and local community engagement. Each of those touchpoints can bring opportunity or disruption depending on where your property sits and how the scheme is designed.

Key steps

1. Identify whether your property is affected. Check published development pipelines, leasing rounds from the Crown Estate and local authority planning portals to see if a marine renewable project is proposed near your land. Proximity to proposed cable routes, substation sites or designated seabed zones is usually the earliest signal that your property may be relevant to a developer. 2. Understand the interests you hold. Pull together your title documents, any existing leases, easements, wayleaves and rights of access. Coastal titles can be complex, with foreshore boundaries, historic covenants and overlapping public rights. Knowing exactly what you own and what burdens already sit on the land is essential before you engage with any developer or objector. 3. Engage with the consenting process early. Marine renewable schemes typically go through consultation under marine licensing rules, and larger projects may be treated as Nationally Significant Infrastructure under the Planning Act 2008. Responding during the formal consultation window is usually more effective than raising concerns once consent has been granted. 4. Negotiate commercial terms carefully. If a developer approaches you about an option, lease, easement or cable wayleave, treat it as a long-term commercial transaction. Heads of terms set the tone, so consider rent review mechanics, reinstatement obligations, term length, break rights and the impact on any future sale or redevelopment of the wider site. 5. Plan for operational and valuation impact. Think through how construction traffic, noise, vessel movements and visual change may affect your trading, tenants or asset value. Where appropriate, build protective provisions into any agreement, and keep records of existing conditions so that any later claim for disturbance or damage is easier to evidence.

Common questions