Subsea current energy · Baseload

The ocean never stops moving.

DepthVolt harnesses steady deep-sea currents with bladeless subsea turbines, delivering clean, continuous power — 24/7, at utility scale for national grids, ports, islands and data centres.

Explore the technology 500+ MW in development
Continuous power
24/7
Operating current range
0.3–1.2m/s
Installation depth
≥50m preferred
Target design life
25+yrs
Why ocean currents

Renewable power without the gaps.

The sun sets. Wind fluctuates. Tides reverse. Deep-sea currents can provide persistent, predictable flow — day and night. DepthVolt harnesses this continuous movement to deliver reliable renewable power with significantly reduced dependence on large-scale battery storage.

Solar

Daylight only. Requires a larger solar farm plus storage for evening peak demand.

Daytime generation

Wind

Weather-driven. Output swings hour to hour.

Variable

Tidal

Predictable, but intermittent — output falls away at every slack tide.

Cyclic — typically ~4 slack periods per day

DepthVolt currents

Persistent, directional flow. Continuous 24/7 generation with minimal reliance on battery storage.

Baseload power · 24/7
Technology

No blades. A far larger slice of the current.

DepthVolt does not claim to beat the power curve of a turbine. It changes the hydraulic boundary conditions the conversion mechanism sees: a large intake captures a much greater flow area, and the housing concentrates that flow before it reaches the generator.

① Current in OPEN OCEAN · ≥50 m 0.90m/s
0.30.60.91.2 m/s

Indicative annual cluster output 3,330 MWh/yr · four turbines, ~90% availability. Proportions are illustrative.

Available kinetic power increases with the cube of current velocity. Figures are illustrative; actual output depends on site conditions, system configuration and validated resource-survey data.

Swipe the diagram sideways →

High-volume flow is concentrated through the generator, increasing usable energy density at the conversion point.

01 / Capture

A large intake area

The intake admits a far greater volume of seawater than the swept area of a comparable conventional rotor. The advantage begins here — by capturing more of the available current and directing it into a controlled flow path.

02 / Concentrate

Flow is concentrated

The housing progressively narrows the captured flow towards the conversion section, increasing flow velocity and concentrating the available hydraulic energy through a smaller cross-sectional area.

03 / Convert

Direct-drive generation

The enclosed rotor drives the generator directly, eliminating the need for a gearbox. No rotating blades are exposed to the marine environment, and the generated power is transmitted to shore via subsea cable.

Control

The field follows demand, not the other way round.

A closed-loop control system continuously monitors power output and onshore demand, adjusting the effective water flow through each turbine in real time. Data and control signals travel via Power Line Communication (PLC) over the existing subsea power cable — eliminating the need for a separate communications cable.

Swipe the diagram sideways →

Follows demand in real time

The controller continuously adjusts the effective water flow to match onshore power demand — generating what is needed rather than operating at full output and shedding surplus power.

Maintains nominal speed as current velocity increases

The control loop continuously monitors generator RPM and regulates water flow as ocean-current velocity changes, maintaining the generator within its nominal operating range.

Smart monitoring and predictive maintenance

The same data lets the system compare measured current conditions with expected energy output and identify abnormal performance degradation — a partial blockage or debris accumulation, for example. An automatic alert then recommends raising the unit for inspection and cleaning, reducing unplanned downtime.

Deployment

Held in the current. Raised to the surface.

DepthVolt is secured by an engineered anchoring system at the selected operating depth, typically 50 m or deeper, based on site conditions. For inspection, cleaning and maintenance, the unit can be raised to the surface — minimising the need for routine deep-water intervention.

Swipe the diagram sideways →

The DepthVolt advantage

Seven engineering advantages, stated plainly.

01

Persistent energy source

Harnesses the continuous movement of naturally occurring deep-sea currents for reliable, around-the-clock power generation.

02

High-volume flow capture

A large intake captures a substantial volume of seawater and channels it towards the conversion section for concentrated energy conversion.

03

Bladeless turbine

Designed to reduce direct interaction between rotating machinery and the surrounding marine environment.

04

Modular and scalable

250 kW modules combine into 1 MW clusters, enabling scalable deployment from individual units to utility-scale installations.

05

Subsea

Installed below the ocean surface, minimising land use and visual impact from shore.

06

Predictable

Deep-sea currents at properly selected sites can provide substantially more persistent generation than weather-dependent renewable sources.

07

Scalable

From distributed power for islands and remote communities to large-scale offshore generation for ports, data centres and national grids.

Scale

From one turbine to a national grid.

Each 250 kW module combines into 1 MW clusters. Clusters can be replicated across suitable ocean-current corridors, scaling generation to match the energy needs of a port, an island, a data centre or a national grid.

500MW

National baseload

A current-corridor field sized for a country's grid — the scale of the planned Congo-Brazzaville programme.

No. of turbines
2,000
Maximum annual generation
4.38 TWh / year
Indicative annual generation · 90% availability
~3.94 TWh / year
Basis of figures
  • Each DepthVolt unit is rated at 250 kW, based on a design current velocity of 1.2 m/s.
  • Available kinetic power varies with the cube of current velocity.
  • Continuous operation at rated output corresponds to a maximum annual generation of 8.76 GWh per MW.
  • Applying ~90% availability for planned maintenance gives indicative annual generation of ~7.9 GWh per MW.
  • Figures are illustrative. Actual site output is determined by measured current conditions, system configuration and a detailed resource survey.
Projects & markets

520 MW across three continents.

Operational experience in Southeast Asia, with projects in development across the Mediterranean, Indian Ocean and Central Africa. The pipeline continues to expand into the Maldives, major ports and other high-demand coastal markets.

12MW

Philippines

Installed
3MW

Malta

In development
5MW

Seychelles

Planned
500MW

Congo-Brazzaville

Planned

Swipe the chart sideways →

Partnership model

No CAPEX.No OPEX.Just clean power.

We finance, build, operate and maintain the entire project. You pay only for the electricity delivered, through an agreed energy tariff under a long-term power purchase agreement (PPA).

  1. 01

    Resource survey

    We assess current velocity, water depth and seabed conditions to identify the optimal site and size the DepthVolt array to your power demand.

  2. 02

    Local project company

    A dedicated local project company is established to own and operate the project assets and enter into the PPA with the utility, government or designated offtaker.

  3. 03

    Finance & build

    DepthVolt arranges project financing and manages manufacturing, installation and grid connection — with no upfront capital investment required from the power buyer.

  4. 04

    Operate & maintain

    We operate and maintain the DepthVolt field throughout the long-term PPA — you pay only for the electricity delivered.

Who we work with

Built for energy buyers who plan in decades.

Governments & ministries

Strengthen energy security with a domestic renewable resource that operates day and night — reducing dependence on imported fuels.

  • Island nations
  • National grid programmes
  • Coastal development zones

Utilities & IPPs

Continuous, predictable renewable generation designed to provide baseload power under a long-term PPA.

  • Grid operators
  • Independent power producers
  • Renewable energy portfolios

Ports & industry

Power produced right next to the load, around the clock.

  • Ports & terminals
  • Desalination — up to 90% less diesel
  • Coastal industrial sites
Marine life

Designed to disappear into the sea.

The rotating components are enclosed within the housing, eliminating exposed turbine blades and reducing direct interaction with marine life. The subsea design also minimises surface presence and visual impact.

0
No exposed moving blades

The rotating core is fully enclosed within the housing.

Low
Low-noise operation

Continuous generation at low acoustic output.

0 kg
No fuel combustion

Zero operational emissions at the site.

Contact

Let's map the current off your coast.

Tell us where you need power and how much. We'll assess the location and provide a preliminary site evaluation, proposed capacity and indicative energy tariff within two working days.

Headquarters3013 Bedok Industrial Park East
Singapore 489979
Active marketsSoutheast Asia · Mediterranean · Indian Ocean · Africa · Gulf