May 17, 2020

Wine Dregs Fed to Cows Cut Emissions 20%

energy digital
wine dregs
emissions from cows
dairy cow e
2 min
A new study from Australian researchers finds that cows fed the leftovers from wine-making benefits the environment and milk production
New research has found a good use for the leftover material from wine-making that will benefit both the environment and agriculture. By feeding cows g...


New research has found a good use for the leftover material from wine-making that will benefit both the environment and agriculture. By feeding cows grape marc, or the stems, seeds and skins remaining from making wine, methane emissions decreased by about 20 percent.

Under the Victorian Department of Primary Industries research center, the study also found that the cows produced 5 percent more milk with an increased content of healthy, fatty acids and antioxidants. During the experiment, Australian Holstein dairy cows were fed five kilograms of grape march a day for one month, while another group remained on a diet of conventional fodder. Milk production, composition and methane emissions were then measured by scientists, who believe the study is the first of its kind.


Customers Rewarded for Choosing Green Energy

ENER-G Wins Technology Provider of the Year Award

December's issue of Energy Digital has gone live!

''I was surprised by the magnitude of the [methane emission] findings, and also happy to see this improvement in the milk fatty acid composition,'' Peter Moate, the department's scientist, told the Sydney Morning Herald. ''We now know that supplementing a dairy cow's diet with dried grape marc increases the healthy fatty acids in milk by more than six times that of standard autumn fodder.”

Researchers say they will continue exploring methods of feeding grape marc to more cows, which has luckily been an easy task thus far. Optimistic, the researchers believe that in experimenting with a number of management strategies and supplements, they may be able to reduce methane emissions by more than 50 percent. Cheers to that!




Share article

Jul 30, 2021

Major move forward for UK’s nascent marine energy sector

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

Share article