Tidal Power firm Atlantis Resources is partnering with Macquarie Capital Europe to help bring in more long-term investors to support its Scottish portfolio of assets.

As well as the flagship MeyGen scheme in the Pentland Firth, Atlantis also has projects at Brough Ness, Mull of Galloway and Kyle Rhea.

The firm, which is in the process of relocating its headquarters from Singapore to Edinburgh, said it also hopes to continue to grow its portfolio in Scotland and further afield.

It also plans to operation a turbine assembly facility at the Nigg yard on the Cromarty Firth.

The tie-up with Macquarie will see the investment bank review how to attract more backers from around the world to invest in the AIM-listed company.

Mark Dooley, head of infrastructure, utilities and renewables at Macquarie Capital Europe, said: "Macquarie Capital is pleased to partner with Atlantis Resources, a leader in the tidal stream sector.

“Macquarie Capital has a long history of matching institutional capital to infrastructure projects, and we look forward to working with Atlantis to bring strategic, long term investors into their unique portfolio.”

Tim Cornelius, chief executive of Atlantis, said: "Britain is leading the way in the development of tidal power and Atlantis is at the forefront having consolidated much of the industry in Scotland and helped to underpin its very bright future.

“Through the engagement of Macquarie Capital, we are bringing on an experienced team of renewable energy infrastructure experts who will work with Atlantis to communicate investment opportunities across the Atlantis portfolio to the industrial and financial investor communities in the UK, Europe, Asia and the Americas."

MeyGen is the largest consented tidal stream power project in Europe with a potential capacity of 398 megawatts, equivalent to providing enough power for around 400,000 homes.

The first phase of the project has already secured more than £63 million of public and private backing.

Construction of much of the infrastructure has started with several steps already completed.

More than 6,000 tonnes of steel were delivered in the first six months of this year to help weigh down foundations for the underwater turbines.

Ducts have been bored into cliffs in the shoreline and undersea power cables were laid in September which will connect turbines to an onshore substation connected to the electricity grid.

The first turbines, which are being built by Lockheed Martin, remain on course to be installed and connected next year.

The other Scottish projects Atlantis has are not quite as advanced as MeyGen.

The Brough Ness scheme, located between the southern most tip of the Orkney Islands and the north east of John O’Groats, has the potential to provide up to 100MW.

Mull of Galloway is slated to have 30MW and Kyle Rhea, located between the Isle of Skye and mainland Scotland, 8MW.

Around 40 Scottish companies have been involved in MeyGen so far. ABB is the principal contractor for all onshore works with James Fisher & Sons doing the offshore contracts.

Atlantis reported revenue of £500,000 for the first six months of 2015 which was mainly derived from third party consulting revenue. Its pre-tax losses narrowed from around £4.4m to £3.75m.