May 17, 2020

Australian Navy Explores Alternative Fuels with U.S.

energy digital
Royal Australian Navy
U.S. Navy
Navy
Admin
2 min
Strengthening national security with alternative fuels
The Royal Australian Navy recently signed an agreement with the US Navy to explore the use of alternative fuels in a quest to reduce their dependency...

 

The Royal Australian Navy recently signed an agreement with the US Navy to explore the use of alternative fuels in a quest to reduce their dependency on foreign fossil fuels.

A Statement of Cooperation, signed by Australia’s Chief of Navy, Vice Admiral Ray Griggs, AO, CSC, RAN and the US Secretary for Navy, Ray Mabus, recognized the benefits of alternative fuels and the importance of the project in terms of national security.

The RAN’s Fleet Commander, Rear Admiral Tim Barrett, AM, CSC, RAN described the project as having enormous potential at the signing ceremony on board the US aircraft carrier USS Nimitz on July 19th.

“All of us have a responsibility to be more environmentally aware,” he said. “As things stand today, biofuel remains too costly to use across our fleet. However, this project could lead to a cheaper alternative fuel.”

The US Navy has embarked on an ambitious plan to deploy a fleet of warships powered by alternative fuels by 2016, deemed the 'Great Green Fleet.' The initiative has been touted as one of the most effective moves to jumpstart the use of renewable energy in the US military and reduce its dependence on fossil fuels, which would, in turn, have similar effects on the larger economy.

“We are too dependent on either potentially or actually volatile places on earth to get our energy,” Mabus said in an interview with Renewable Energy World. “Now we’re susceptible to supply shocks and even if we’ve got enough, we’re susceptible to price shocks... when the Libya situation started and the price of oil went up $40 a barrel, that was almost a billion dollars additional fuel bill for the U.S. Navy.”

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Along with the Air Force and Army, the Navy has tested and certified a number of ships and warplanes as biofuel compatible to run on a drop-in blend of conventional oil and green fuel that does not require engine modifications. With over $500 million invested in the biofuels industry, the Navy hopes to cut its use of fossil fuels in half over the next decade.

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Jul 30, 2021

Major move forward for UK’s nascent marine energy sector

marineenergy
renewableenergy
tidalturbine
Sustainability
3 min
The UK’s nascent marine energy sector starts exporting electricity to the grid as the most powerful tidal turbine in the world begins to generate power

Although the industry is small and the technologies are limited, marine-based energy systems look to be taking off as “the world’s most powerful tidal turbine” begins grid-connected power generation at the European Marine Energy Centre

At around 74 metres long, the turbine single-handedly holds the potential to supply the annual electricity demand to approximately 2,000 homes within the UK and offset 2,200 tonnes of CO2 per year.

Orbital Marine Power, a privately held Scottish-based company, announced the turbine is set to operate for around 15 years in the waters surrounding Orkney, Scotland, where the 2-megawatt O2 turbine weighing around 680 metric tons will be linked to a local on-land electricity network via a subsea cable. 

How optimistic is the outlook for the UK’s turbine bid?

Described as a “major milestone for O2” by CEO of Orbital Marine Power Andrew Scott, the turbine will also supply additional power to generate ‘green hydrogen’ through the use of a land-based electrolyser in the hopes it will demonstrate the “decarbonisation of wider energy requirements.” 

“Our vision is that this project is the trigger to the harnessing of tidal stream resources around the world to play a role in tackling climate change whilst creating a new, low-carbon industrial sector,” says Scott in a statement. 

The Scottish Government has awarded £3.4 million through the Saltire Tidal Energy Challenge Fund to support the project’s construction, while public lenders also contributed to the financial requirements of the tidal turbine through the ethical investment platform Abundance Investment.

“The deployment of Orbital Marine Power’s O2, the world’s most powerful tidal turbine, is a proud moment for Scotland and a significant milestone in our journey to net zero,” says Michael Matheson, the Cabinet Secretary for Net-Zero, Energy and Transport for the Scottish Government. 

“With our abundant natural resources, expertise and ambition, Scotland is ideally placed to harness the enormous global market for marine energy whilst helping deliver a net-zero economy.

“That’s why the Scottish Government has consistently supported the marine energy sector for over 10 years.”

However, Orbital Marine CEO Scott believes there’s potential to commercialise the technology being used in the project with the prospect of working towards more efficient and advanced marine energy projects in the future. 

We believe pioneering our vision in the UK can deliver on a broad spectrum of political initiatives across net-zero, levelling up and building back better at the same time as demonstrating global leadership in the area of low carbon innovation that is essential to creating a more sustainable future for the generations to come.” 

The UK’s growing marine energy endeavours

This latest tidal turbine project isn’t a first for marine energy in the UK. The Port of London Authority permitted the River Thames to become a temporary home for trials into tidal energy technology and, more recently, a research project spanning the course of a year is set to focus on the potential tidal, wave, and floating wind technology holds for the future efficiency of renewable energy. The research is due to take place off of the Southwest coast of England on the Isles of Scilly

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