Working strategy

The renewable hub is formed by a number of ES-Wave devices and a common platform where the energy is processed that will usually be provided with two connections in order to deal with the energy managed by the hub. These are the import/export cable and a hydrogen pipeline (this could already be there as a result of a decommission process)

At a given time an ES-Wave device connected to the hub can be:

  • Sending energy to the customer

  • Sending energy to other ES-Wave devices

  • Absorbing energy

The hub is managing all this energy in such a manner that at any given time can provide at least a certain amount of power to the customer. This means avoiding penalties for a lack of availability.

Nevertheless, the customer can demand full power from the Renewable Energy Hub so as to reduce the time of supply. If the power is really necessary for the Grid management, this can constitute a deal, producing additional benefits to our ES-Wave Renewable Energy Hub customer.

The production excess can also be converted into hydrogen that can instantly be exported to shore by using the pipeline connection (this means not decommissioning the pipeline + using the pipeline as an asset)

There is a process not to spoil a minute of production:

If the production of electricity is instantly needed by the National Grid, the electricity will be exported.

If the electricity is not needed by the National Grid there are two options:

Does the National Grid not need to store electricity because there is an excess of production?

  • If the answer is Yes, then the device can operate as a storing facility, being potentially capable of releasing more electricity than what it was used to lift up the device using the tidal range. (see animation above)

  • If the answer is No, the production of Hydrogen can start and it will be sent to shore potentially using remaining pipelines.

How is hydrogen produced?

There is a technique that uses sea water + energy to produce Hydrogen from seawater. A result of this is having Oxygen as a by-product, and potentially a location where there was Oil and Gas before.

This oxygen can be injected in the well where the decommissioned asset was installed to create more hydrogen from oil (as mentioned in the 4th paragraph of this article) doubling this way the amount of hydrogen generated and leaving the carbon sequestrated.

With this particular combination, there is abundant seawater, a significant and growing renewable energy industry producing electricity and when that electricity is not needed, it can be utilised with an electrolyser to produce Hydrogen and Oxygen.

The Hydrogen can be exported; the Oxygen can be injected in the well. This will produce Hydrogen with the hydrocarbons remaining in the well and the carbon will be kept sequestrated.