• About
    • Which Energy Mix is this?
  • Climate News Network Archive
  • Contact
The climate news that makes a difference.
No Result
View All Result
The Energy Mix
  • Canada
  • UK & Europe
  • Fossil Fuels
  • Ending Emissions
  • Community Climate Finance
  • Clean Electricity Grid
  • Cities & Communities
SUBSCRIBE
DONATE
  • Canada
  • UK & Europe
  • Fossil Fuels
  • Ending Emissions
  • Community Climate Finance
  • Clean Electricity Grid
  • Cities & Communities
SUBSCRIBE
DONATE
No Result
View All Result
The Energy Mix
No Result
View All Result
  • Canada
  • UK & Europe
  • Fossil Fuels
  • Ending Emissions
  • Community Climate Finance
  • Clean Electricity Grid
  • Cities & Communities
  FEATURED
Analyst Sees Oil and Gas Running Short of Cash as IEA Releases Energy Investment Update May 30, 2023
House of Commons Motion, Senate Bill Urge New Climate Rules for Financial Institutions May 30, 2023
13 Canadian Fossils Linked to Massive Losses in Western Wildfires May 30, 2023
Hamilton Plans Heat Bylaw for Rental Housing May 30, 2023
Supreme Court Decision Undercuts U.S. Clean Water Act May 30, 2023
Next
Prev

Blue energy revolution comes of age

March 31, 2020
Reading time: 4 minutes
Primary Author: Paul Brown

 

With green energy from wind and solar out-competing fossil fuels, governments now hope for another boost − blue energy from the oceans.

LONDON, 31 March, 2020 − The amount of energy generated by tides and waves in the last decade has increased 10-fold. Now governments around the world are planning to scale up these ventures to tap into the oceans’ vast store of blue energy.

  • The climate news you need. Subscribe now to our engaging new weekly digest.
  • You’ll receive exclusive, never-before-seen-content, distilled and delivered to your inbox every weekend.
  • The Weekender: Succinct, solutions-focused, and designed with the discerning reader in mind.
Subscribe

Although in 2019 the total amount of energy produced by “blue power” would have been enough to provide electricity to only one city the size of Paris, even that was a vast increase on the tiny experiments being carried out 10 years earlier.

Now countries across the world with access to the sea are beginning to exploit all sorts of new technologies and intending to scale them up to bolster their attempts to go carbon-neutral.

Blue energy takes many forms. One of the most difficult technically is harnessing the energy of waves with devices that produce electricity. After several false starts many successful prototypes are now being trialled for commercial use. Other experiments exploit the tidal range – using the power of rapidly rising and falling tidal streams to push water through turbines.

The most commercially successful strategies so far use underwater turbines, similar to wind turbines, to exploit the tidal currents in coastal regions.

More ambitious but along the same lines are attempts to capture the energy from the immense ocean currents that move vast quantities of water round the planet.

“Our latest report underlines the considerable international support for the marine renewable sector. The start of this new decade carries considerable promise for ocean energy”

Also included in blue energy is ocean thermal energy conversion, which exploits the temperature differences between solar energy stored as heat in the upper ocean layers and colder seawater, generally at a depth below 1000 metres.

A variation on this is to use salinity gradients, the difference between the salt content of the sea and fresh water entering from a large river system. Some of these schemes are being used to produce fresh drinking water for dry regions rather than electricity.

The potential from all these energy sources is so great that an organisation called Ocean Energy Systems (OES), an offshoot of the International Energy Agency, is pooling all the research in a bid to achieve large-scale deployment.

There are now 24 countries in the OES, including China, India, the US, most European nations with a coastline, Japan, Australia and South Africa. Most of them have already deployed some blue energy schemes and are hoping to scale them up to full commercial use in the next decade.

As with wind and solar when they were being widely developed ten years ago, energy from the oceans is currently more expensive than fossil fuels. But as the technologies are refined the costs are coming down.

Profiting already

Already China has encouraged tidal stream energy by offering a feed-in tariff three times the price of fossil fuels, similar to the rate used in many countries to launch solar and wind power. One Chinese company is already finding this incentive enough to feed power into the grid and make a profit.

Among the leading countries developing these technologies are Canada and the United Kingdom, the two countries with the highest tides in the world. Canada has a number of tidal energy schemes on its Atlantic coast in Nova Scotia, with several competing companies testing different prototypes.

Scotland, which has enormous potential because of its many islands and tidal currents, has the largest tidal array of underwater turbines in the world. The turbine output has exceeded expectations, and the MeyGen company is planning to vastly increase the number of installations.

But this is only one of more than 20 projects in the UK, some still in the research and development stage, but many already being scaled up for deployment at special testing grounds in Scotland’s Orkney islands and the West of England.

OES chairman Henry Jeffrey, from the University of Edinburgh, said the group’s new annual report communicates the sizeable global effort to identify commercialisation pathways for ocean energy technologies.

Both Canada and the US can now see big potential, and political leaders across Europe have identified ocean energy as an essential component in meeting decarbonisation targets, fostering economic growth and creating future employment opportunities.

Lower costs essential

“Our latest report underlines the considerable international support for the marine renewable sector as leading global powers attempt to rebalance energy usage and limit global warming. The start of this new decade carries considerable promise for ocean energy,” he said.

However, Jeffrey warned that while the sector continued to take huge strides forward, there were several challenges ahead “centred around affordability, reliability, installability, operability, funding availability, capacity building and standardisation.

“In particular, significant cost reductions are required for ocean energy technologies to compete with other low-carbon technologies.”

Currently the cost of wind power, taking into account construction costs over the turbines’ lifetime, is being quoted as around €0.8-10 (one eighth to one tenth of a Euro, about £0.07-9 or US$0.9-11) per kilowatt hour, but this is still going down.

The European target is to get tidal stream energy down to €0.10 by 2030 and wave power down to €0.15, which would also make them competitive with fossil fuels if gas and coal were obliged to pay for capturing and storing the carbon dioxide they produce. − Climate News Network



in Climate News Network

The latest climate news and analysis, direct to your inbox

Subscribe

Related Posts

moerschy / Pixabay
Biodiversity & Habitat

Planetary Weight Study Shows Humans Taking Most of Earth’s Resources

March 19, 2023
42
U.S. Geological Survey/wikimedia commons
Biodiversity & Habitat

Climate Change Amplifies Risk of ‘Insect Apocalypse’

December 1, 2022
57
Alaa Abd El-Fatah/wikimedia commons
COP Conferences

Rights Abuses, Intrusive Conference App Put Egypt Under Spotlight as COP 27 Host

November 14, 2022
30

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

I agree to the Terms & Conditions and Privacy Policy.

Trending Stories

/Piqusels

Analyst Sees Oil and Gas Running Short of Cash as IEA Releases Energy Investment Update

May 31, 2023
475
Neal Alderson/Twitter

Out-of-Control Wildfire Burns Homes, Forces Evacuations Outside Halifax

May 29, 2023
2.5k
Equinor

Equinor Delays Bay du Nord Offshore Oil Project, Blames ‘Volatile’ Markets

May 31, 2023
84
Ryan Turnbull/Facebook

House of Commons Motion, Senate Bill Urge New Climate Rules for Financial Institutions

May 30, 2023
181
York Region/flickr

Hamilton Plans Heat Bylaw for Rental Housing

May 31, 2023
416
Martin Davis/Facebook

13 Canadian Fossils Linked to Massive Losses in Western Wildfires

May 30, 2023
566

Recent Posts

https://en.wikipedia.org/wiki/Rachel_Notley

Notley Would Have Backed Carbon Capture Subsidies, Smith Less Certain: Ex-Pipeline Exec

June 1, 2023
23
David Dodge, Green Energy Futures/flickr

Clean Energy to Add 700,000 New Jobs by 2050, with Alberta in the Lead

May 30, 2023
160
David/flickr

Supreme Court Decision Undercuts U.S. Clean Water Act

May 30, 2023
72
Nicolas Rénac/Flickr

Climate Change to Cut Coffee Growing Lands by Over 50%

May 30, 2023
68
ValiGreceanu/Pixabay

Report Urges Tax Hike for Luxury Air Travel, ‘Pets on Jets’

May 30, 2023
61
Jörg Möller/Pixabay

UK Traffic Calming Strategy Produces Solid Results, Manufactured Anxiety

May 29, 2023
85
Next Post

Northern Europe's warm water flow may falter

The Energy Mix - The climate news you need

Copyright 2023 © Energy Mix Productions Inc. All rights reserved.

  • About
  • Contact
  • Privacy Policy and Copyright
  • Cookie Policy

Proudly partnering with…

scf_withtagline
No Result
View All Result
  • Canada
  • UK & Europe
  • Fossil Fuels
  • Ending Emissions
  • Community Climate Finance
  • Clean Electricity Grid
  • Cities & Communities

Copyright 2022 © Smarter Shift Inc. and Energy Mix Productions Inc. All rights reserved.

Manage Cookie Consent
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behaviour or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Manage options Manage services Manage vendors Read more about these purposes
View preferences
{title} {title} {title}