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The offshore wind industry has seen its global levelised costs of electricity plummet 22% due to competitive bidding, reaching a benchmark estimate of $126/MWh during the second half of this year, according to new figures from Bloomberg New Energy Finance.

Clean Power

Offshore Wind Costs Down 22% To $126/MWh, According To BNEF

The offshore wind industry has seen its global levelised costs of electricity plummet 22% due to competitive bidding, reaching a benchmark estimate of $126/MWh during the second half of this year, according to new figures from Bloomberg New Energy Finance.

The offshore wind industry has seen its global levelized costs of electricity plummet 22% due to competitive bidding, reaching a benchmark estimate of $126/MWh during the second half of this year, according to new figures from Bloomberg New Energy Finance.

In its latest study of the levelized cost of electricity (LCOE) for all renewable and fossil fuel generating technologies, Bloomberg New Energy Finance (BNEF) pointed to competitive bidding auctions in the Netherlands and Denmark for helping to drive down the costs in offshore wind, pushing the benchmark (or weighted average) estimate for offshore wind globally down to $126/MWh in the second half of 2016 — down 22% from the first half of 2016, and down 28% from the second half of 2015.

“For years, offshore wind has been regarded as a high-cost option compared to onshore wind, solar PV, coal and gas,” explained Seb Henbest, head of Europe, Middle East and Africa at BNEF, and in charge of the levelized cost modelling work. “This study shows that the economics of offshore wind are now improving fast, with the best sites getting closer to striking distance of more mature technologies.”

“Behind this improvement are the use of much bigger turbines, enhanced knowhow on managing the construction of arrays in the North Sea, and the impact of auction programmes in Europe,” added Tom Harries, offshore wind analyst at BNEF. “The latter have simplified development by providing transmission and a permitted site, and have led to fierce competition between bidders.”

BNEF points to two specific auctions which took place earlier this year. The first, announced in July, saw DONG Energy win the contract to develop the Borssele 1 and 2 Offshore Wind Farms off the coast of the Netherlands, both coming in at 350 MW for a total of 700 MW. DONG Energy won the contract at a cost of €72.70 per MWh over the first 15 years of the contract — after which, the two wind farms will receive the market price. The second auction, which was awarded in September, went to Vattenfall, who placed the lowest bid for the Danish Near Shore Wind Tender for two offshore wind projects located in the Danish North Sea, for a final bid of 0,475 kr/kWh (€60/$67.33).

However, high cost projects being developed in deep UK waters are responsible for the higher benchmark cost — though it is still well down on previous figures.

The BNEF report also found that other technologies are seeing continued declines in their LCOEs. Onshore wind’s global benchmark estimate is $68/MWh, 16% below the first half of the year, making it well and truly cost competitive with coal and gas-fired generation in many countries. The LCOE for crystalline-silicon solar photovoltaic projects reaching financial close in H2 2016 is $100/MWh.

“We are continuing to see rapid reductions in costs per MWh for renewable energy around the world,” said Luke Mills, senior analyst at BNEF and lead author of the report. “Looking ahead to 2017, solar may be particularly interesting because excess capacity in global PV module making could lead to further rapid price deflation as manufacturers fight for customers.”

 
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