Mar 29, 2018

Repowering older onshore wind farms could increase UK's capacity by 1.3GW

Sophie Chapman
2 min
A new report released by the Energy and Climate Intelligence Unit claims that the UK could yield a net increase of 1.3GW of energy if it repo...

A new report released by the Energy and Climate Intelligence Unit claims that the UK could yield a net increase of 1.3GW of energy if it repowers onshore wind farms build around 2000.

The amount of new energy created could be enough to power 800,000 homes.

According to the report, if the sites that are potentially facing being dismantled are repowered, then the UK could save more than £77mn (US$108.2mn) from using fossil fuel alternatives.

“Repowering onshore wind projects with modern, ultra-efficient turbines provides benefits to consumers by delivering electricity cheaper than any other technology,” commented Executive Director of RenewableUK, Emma Pinchbeck.

“If new and re-powered onshore projects are allowed to compete for power contracts, they can generate low-cost, subsidy-free electricity.”


“As this report shows, the onshore wind industry’s supply chain offers industrial benefits to sectors such as the UK’s steel industry producing high-quality material for turbine towers.

“But onshore wind still needs a route to market, so it’s encouraging to see Ministers examining possible ways forward for this technology, which has consistently enjoyed a high level of public support.”

In the US, repowering wind farms is creating a fast-growing industry – with older turbines receiving longer and lighter blades and new electronics, making them more efficient.

In 2017, the US saw the repowering of 15 projects, with totalled 2,136MW, according to the American Wind Association.

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Jun 7, 2021

Trafigura and Yara International explore clean ammonia usage

Dominic Ellis
2 min
Commodity trading company Trafigura and Yara International sign MoU to explore developing ammonia as a clean fuel in shipping

Independent commodity trading company Trafigura and Yara International have signed an MoU to explore developing ammonia as a clean fuel in shipping and ammonia fuel infrastructure.

Reducing shipping emissions is a vital component of the fight against global climate change, yet Greenhouse Gas emissions from the global maritime sector are increasing - and at odds with the IMO's strategy to cut absolute emissions by at least 50% by 2050. 

How more than 70,000 ships can decrease their reliance on carbon-based sources is one of transport's most pressing decarbonisation challenges.

Yara and Trafigura intend to collaborate on initiatives that will establish themselves in the clean ammonia value chain. Under the MoU announced today, Trafigura and Yara intend to work together in the following areas:

  • The supply of clean ammonia by Yara to Trafigura Group companies
  • Exploration of joint R&D initiatives for clean ammonia application as a marine fuel
  • Development of new clean ammonia assets including marine fuel infrastructure and market opportunities

Magnus Krogh Ankarstrand, President of Yara Clean Ammonia, said the agreement is a good example of cross-industry collaboration to develop and promote zero-emission fuel in the form of clean ammonia for the shipping industry. "Building clean ammonia value chains is critical to facilitate the transition to zero emission fuels by enabling the hydrogen economy – not least within trade and distribution where both Yara and Trafigura have leading capabilities. Demand and supply of clean ammonia need to be developed in tandem," he said.  

There is a growing consensus that hydrogen-based fuels will ultimately be the shipping fuels of the future, but clear and comprehensive regulation is essential, according to Jose Maria Larocca, Executive Director and Co-Head of Oil Trading for Trafigura.

Ammonia has a number of properties that require "further investigation," according to Wartsila. "It ignites and burns poorly compared to other fuels and is toxic and corrosive, making safe handling and storage important. Burning ammonia could also lead to higher NOx emissions unless controlled either by aftertreatment or by optimising the combustion process," it notes.

Trafigura has co-sponsored the R&D of MAN Energy Solutions’ ammonia-fuelled engine for maritime vessels, has performed in-depth studies of transport fuels with reduced greenhouse gas emissions, and has published a white paper on the need for a global carbon levy for shipping fuels to be introduced by International Maritime Organization.

Oslo-based Yara produces roughly 8.5 million tonnes of ammonia annually and employs a fleet of 11 ammonia carriers, including 5 fully owned ships, and owns 18 marine ammonia terminals with 580 kt of storage capacity – enabling it to produce and deliver ammonia across the globe.

It recently established a new clean ammonia unit to capture growth opportunities in emission-free fuel for shipping and power, carbon-free fertilizer and ammonia for industrial applications.

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