Institute for Energy Transition
dedicated to Marine Renewable Energies


Quantitative evaluation of metals released into the marine environment from the galvanic anodes of ORE structures

Duration: 12 months


The use of cathodic protection by galvanic anode is an effective and long used method to fight against corrosion of metal structures immersed at sea (e. g. ships, docks on piles, offshore platforms...). The oxidation of these anodes, often composed of zinc or aluminum, causes the release and diffusion of metal elements in the form of ions or oxyhydroxides.
With the development of ORE, the question of the effects of anode degradation has reappeared in civil society and been relayed by government departments, so it is important to be able to provide scientifically substantiated answers to this question.


To quantify the chemical compounds emitted by the galvanic anodes of ORE structures and the risk of dispersion in the marine environment.

Expected results

  • In-depth study of the current state of knowledge on cathodic protection, the released compounds and their distribution in the various compartments of the environment.
  • Contextualization of metal inputs from galvanic anodes of ORE structures with natural and anthropogenic metal compounds in the marine environment.
  • Conclusions on the potential impacts of cathodic protection on the marine environment and recommendations for the design of experiments to characterise and quantify these effects, where appropriate.

Scientific content

  • Bibliographical review of cathodic protection and their potential impact on the environment.
  • Modeling the dispersion flows of metals released into the environment at various ORE sites located on the French coastlines.
  • Assessment of the risks of exposure to environmental emissions of chemical compounds from galvanic anodes.


ANODE project partners

This project is supported by the French State, managed by the National Research Agency (ANR) as part of the Investments for the Future programme.

Investissements d'Avenir Logo