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Vattenfall proves offshore wind can be profitable without subsidies

By Michelle Froese | July 30, 2019

Vattenfall announced that it will be constructing the Hollandse Kust Zuid (HKZ) 3 & 4 offshore wind farm using a zero subsidy mechanism.

Vattenfall’s two 1.5-GW projects off the shore of the Netherlands will be the first two unsubsidized offshore wind farms globally.

This project follows Hollandse Kust Zuid (HKZ) 1 & 2 and, together, represent the first two unsubsidized offshore wind farms globally, says GlobalData, a data and analytics company. The wind farms will have a combined capacity of nearly 1.5 GW.

The subsidy-free auction in the Netherlands is expected to make coal-based power plants unviable, leading to their closure far earlier than the official ban on them begins in 2030.

The closure of these plants should lead to an increase in wholesale prices in the Netherlands, making the operation of the wind-power projects profitable even without the aid of subsidies.

“Under the zero subsidy mechanism, the power generated from the offshore wind farm will be sold in the wholesale market instead of a continuous revenue scheme which locks in a fixed income,” explained Mohit Prasad, Project Manager with GlobalData.

The cost of offshore wind in Europe has been falling and further decline is expected. Some of the leading offshore wind markets in Europe are expected to see a fall in their average project cost. According to GlobalData, the UK, which has the maximum offshore wind installation in Europe had an average project cost for an offshore wind farm at $5,152 per kW in 2018. This is expected to decline to $4,787 per kW by 2025.

During the same time period the average project cost for an offshore wind farm in Germany is expected to decline from $4,268 per kW to $3,989 per kW. The Netherlands is expected to witness a much steeper fall with project cost declining from $5,700 per kW in 2018 to $4,250 per kW at the end of 2025. The decrease in project cost is estimated based on the price of wind turbine components and the construction of larger, more efficient turbines.

“In the future we can expect to see more developers striving for the zero subsidy mechanism,” said Prasad.

For example, The Netherlands was inspired by a similar auction in Germany in April 2017. However, the two auctions were different in regards to timescale; in the former case the developers have until 2024 to start construction, whereas the Dutch developers will have to deliver the projects two years earlier.

“The developers in Germany banked on the possibility that turbine capacities would have increased sufficiently to help them reduce generation costs,” he added. “They are still hopeful for the project due to the proposed introduction of a carbon fee system by the Government on emissions in 2020, at EUR18/metric ton of CO2, which will rise to EUR35/metric ton in 2030.”

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