Power collection system for subsea transfer of power from offshore power generation units

A power collection system for subsea collection of power from offshore power generation units, the system comprising:

• a set of power extender modules configured to be independently arranged subsea on a seabed in a subsea local grid during operation, each power extender module including:
• switching circuitry, and
• a waterproof enclosure accommodating the switching circuitry for subsea operation, the waterproof enclosure being configured to prevent water surrounding the waterproof enclosure from reaching the switching circuitry disposed inside the waterproof enclosure,
• wherein each power extender module is connectable with a respective one of a set of offshore power generation units to collect electrical power from the respective offshore power generation unit,
• wherein the switching circuitry of each power extender module is configured to controllably connect the respective offshore power generation unit to the local grid, and
• wherein the set of power extender modules are configured to be electrically connected in series via at least one subsea cable to provide the electrical power to a power consumer.