Utility Scale Systems


Autonomous Power Systems


Mark 3 PowerBuoy

Mark 4 PowerBuoy


Marine Energy Infrastructure


Human-Machine Interface


Undersea Substation Pod


Mark 4 – The PowerTower™

OPT is currently developing the PowerTower™, a Mark 4 PowerBuoy that is planned to drive a generator with a 2.4 megawatt peak rating. The Mark 4 development project within OPT moves through concept and final design to fabrication and installation, culminating with an operational test period proving the capabilities of the unit. The program builds on OPT's many successful deployments of similar but smaller PowerBuoys.

The US Department of Energy (DOE) and the UK Government are funding several stages of the Mark 4 development program. The successful completion of this product development is expected to take OPT's PowerBuoy technology to a new level of commercial, utility-scale product capability. The Mark 4 PowerTower™ is expected to improve on the customer value proposition of the Mark 3 PowerBuoy and expand the available market areas for OPT's utility-scale product offering.