Cloud Computing Saves Energy and CO2 Emissions
Research firm Verdantix has released a study finding that companies that switch to cloud computing can save money on energy bills and reduce energy consumption. The study, sponsored by AT&T, estimates that cloud computing can save $12.3 billion on corporate energy bills and reduce carbon emissions by 85.7 million metric tons per year by 2020.
Pike Research released a similar report in 2010 concluding that cloud computing can reduce 38 percent of world datacenter energy use by 2020. Microsoft, Accenture and WSP Environment and Energy also deduced in a study released last year that cloud computing could cut carbon emissions by 30 percent for large efficient companies, and up to 90 percent for small less-efficient companies.
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However, other studies have shown that while some aspects of cloud computing indeed save energy, others do not. The biggest culprit is data storage in the cloud. Unfortunately, Tucker’s research has found that the higher the storage load in the cloud, and the more often files are accessed and downloaded, the more energy intensive the cloud becomes.
When taking these studies into consideration, it is important to recognize the bias that may have driven the findings. After all, AT&T and Microsoft both offer cloud computing services, hence the unequivocal promotion of the cloud as an energy efficient alternative to in-house servers. However, when considering the total energy cost of servers, including mining the materials they’re made of out of the ground, manufacturing them, and transporting them, then centralized cloud servers probably do come out on top in reducing energy consumption.
Major move forward for UK’s nascent marine energy sector
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.
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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