The company – which has an office in Glasgow, a testing facility in Lowestoft, Suffolk and its registered office in London – has developed a low-cost generator that converts motion into electricity.
Trident believes the device could help to reduce the costs of running diesel generators in offshore infrastructure including in wind, wave and turbine devices.
The latest funding round saw further investment from the London Business Angels syndicate and one of its associated funds plus the Angel CoFund.
It means Trident has raised £1 million since October last year.
Now a wave energy convertor prototype of Trident's generator, called the PowerPod, is being installed at Kishorn in Wester Ross with the engineering on the project done by Babcock International.
The prototype is a wave energy convertor which has been designed to supply
The lease with Kishorn Port is initially for a year with the generator attached to a deep water jetty on the pier.
Steve Packard, Trident chief executive, said: "The investment from the London Business Angels network and the Angel CoFund completes the funding required to deliver pier-based sea trials of our generator technology."
Anthony Clarke, London Business Angels chief executive, said: "Following the successful completion of this second round of funding, Trident Energy is now well positioned to accelerate its growth and undertake the sea trials of its innovative technology prior to commercial launch."