Tag Archives: Carbon Emissions

Methods of Improving Data Centers’ Energy Efficiency and Performance

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America’s data centers are consuming — and wasting — a surprising amount of energy.

Source: www.livescience.com

>”Our study shows that many small, mid-size, corporate and multi-tenant data centers still waste much of the energy they use. Many of the roughly 12 million U.S. servers spend most of their time doing little or no work, but still drawing significant power — up to 30 percent of servers are “comatose” and no longer needed, while many others are grossly underutilized. However, opportunities abound to reduce energy waste in the data-center industry as a whole.  Technology that will improve efficiency exists, but systemic measures are needed to remove the barriers limiting its broad adoption across the industry.

How much energy do data centers use?

The rapid growth of digital content, big data, e-commerce and Internet traffic more than offset energy-efficiency progress, making data centers one of the fastest-growing consumers of electricity in the U.S. economy, and a key driver in the construction of new power plants. If such data centers were a country, they would be the globe’s 12th-largest consumer of electricity, ranking somewhere between Spain and Italy.

In 2013, U.S. data centers consumed an estimated 91 billion kilowatt-hours of electricity. That’s the equivalent annual output of 34 large (500-megawatt) coal-fired power plants — enough electricity to power all the households in New York City, twice over, for a year.  […]

Fixing the problem

While current technology can improve data center efficiency, we recommend systemic measures to create conditions for best-practices across the data center industry, including:

Adoption of a simple, server-utilization metric. One of the biggest efficiency issues in data centers is underutilization of servers. Adoption of a simple metric, such as the average utilization of the server central processing units (CPUs), is a key step in resolving the energy-consumption issue.  […]

Rewarding the right behaviors. Data center operators, service providers and multi-tenant customers should review their internal organizational structures and external contractual arrangements and ensure that incentives are aligned to provide financial rewards for efficiency best practices.  […]

Disclosure of data-center energy and carbon performance.Public disclosure is a powerful mechanism for demonstrating leadership and driving behavior change across an entire sector. […]

If just half of the technical savings potential for data-center efficiency that we identify in our report is realized (taking into account market barriers), electricity consumption in U.S. data centers could be cut by as much as 40 percent.  […]”<

 

See on Scoop.it – Green Energy Technologies & Development

Data Centers and Energy Efficiency

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New analysis suggests there’s still an opportunity to cut power consumption and save billions in 2014.

Source: www.greenbiz.com

>”A new tally by the Natural Resources Defense Council (NRDC) suggests there’s still a big opportunity to cut energy usage by 40 percent, saving more than $3.8 billion in 2014 alone.  Put another way, that’s like switching off 39 billion kilowatt-hours of electricity, the equivalent of 14 large, coal-fired power plants.

“Most of the attention is focused on the highly visible hyperscale ‘cloud’ data centers like Google’s and Facebook’s, but they are already very efficient and represent less than 5 percent of U.S. data center electricity consumption,” said Pierre Delforge, NRDC’s director of high-tech energy efficiency. “Our small, medium, corporate and multi-tenant data centers are still squandering huge amounts of energy.”

Here’s the likely outcome: By 2020, U.S. data centers will probably require about 140 kilowatt-hours of electricity to keep online.

The biggest culprits in wasteful IT power consumption are underutilized servers using significant amounts of electricity without performing any useful purpose, according to NRDC.  […]

Figures suggest the average server operates at just 12 percent to 18 percent of its capacity, which means businesses could stand to be far more aggressive about consolidating or virtualizing them. That’s particularly true of the smallest server rooms, ones that crop up with little advance planning.

“The more work a server performs, the more energy-efficient it is—just as a bus uses much less gasoline per passenger when ferrying 50 people than when carrying just a handful,” the analysis notes.

Among the recommended fixes for this persistent problem are the adoption of metrics that provide deeper insight into average server utilization, more public disclosure of data center energy performance information, and “green” data center leases that provide incentives for energy savings.

The reason why these green data center service contracts work, according to the report, is because they create financial incentives for companies to consider their energy use. […]”<

See on Scoop.it – Green Energy Technologies & Development

Greening Coal Power with CO2-eating Microalgae as a Biofuel Feedstock

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Successful microalgae-to-biodiesel conversion has been the goal of some renewable energy researchers for more than two decades.

Duane Tilden‘s insight:

>To that end, Algae.Tec has signed a deal with Macquarie Generation, Australia’s largest electricity generator, to put an “algae carbon capture and biofuels” production facility next to a coal-fired power station in Australia’s Hunter Valley. Macquarie Generation, which operates the Sydney-area 2640 MW Bayswater Power Station, will feed waste CO2 into an enclosed algae growth system. […]

Projections are for the first year of production to hit 100,000 tons of algae biomass; half of which would be converted to an estimated 60 million liters of biodiesel. One sea-land container would generate 250 tons of biomass per annum, said the company, which would be harvested on a continuous basis. […]

Stroud projects that some 75 percent of his company’s income will come from biodiesel. The remaining 25 percent of Algae.Tec’s income will hinge on the sale of the microalgae’s leftover biomass for animal feed.<

See on www.renewableenergyworld.com

Lord Lawson declares UK’s climate model ‘flawed’

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Lord Lawson is calling for an independent review of the UK’s official climate predictions as he claims the model used to make the projections is “flawed”. Based on research published …

Duane Tilden‘s insight:

>The thinktank claims predictions made by it will “always produce high estimates of future warming” regardless of the data fed into the process.

The HadCM3 model is used for official UK Climate Projections (UKCP09), which provide information to help plan how to adapt to a changing climate. It generates a virtual representation of the global climate such as the greenhouse effect, evaporation of the oceans, rainfall and sunlight. By increasing the greenhouse gases in the model, predictions on how much warmer the planet will become in the future can be made.

The UK’s climate model is also used to help make investment decisions across the public and private sectors and as estimates of future warming generated by the Government’s model are “much higher than those implied by several recent studies”, they are likely to “lead to considerable malinvestments” of public and private funds, GWPF claims.

Andrew Montford, author of the GWPF briefing paper said: “There are potentially billions of pounds being misspent on the basis of these predictions. The Government has little choice but to withdraw them pending a review of the way they are put together.”

The Met Office defended its methods and rubbished the criticism.

The organisation said in a statement: “UKCP09 used a sophisticated method that used both model projections and observations to provide a range of potential future warming which attempts to take in the uncertainties in model parameters. The GWPF article fails to note that UKCP09 also used information from many other climate models and that the projections were independently reviewed prior to publication.”<

See on www.energylivenews.com

Greening the Internet: Sustainable Web Design

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Do you know your website’s carbon footprint? Or how to lower it?

Duane Tilden‘s insight:

>A growing number of industries are trying to reduce or at least curtail carbon footprints and energy use. Emissions standards have been set for the automotive, construction, and even telecommunications industries. Yet the internet’s carbon footprint is growing out of control: a whopping 830 million tons of CO2 annually, which is bigger than that of the entire aviation industry. That amount is set to double by 2020.

It is time for web designers to join the cause.

Right now, at least 332 million tons of CO2—40 percent of the internet’s total footprint—falls at least partially under the responsibility of people who make the web. It needn’t be that large, but with our rotating carousels, high-res images, and more, we have been designing increasingly energy-demanding websites for years, […]<

See on alistapart.com

EPA sets terms for New Power Plant carbon emissions

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Frances Beinecke: We’re already paying the costs of climate change. The new power plant emissions standards could not be more timely

Duane Tilden‘s insight:

>The carbon standards announced Friday by Gina McCarthy, administrator of the US Environmental Protection Agency, will set reasonable limits on carbon pollution from the power plants of tomorrow, those that are yet to be built.<

See on www.theguardian.com