New smart grid solution heals itself amid central grid outages

November 1, 2017 by  
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Renewable energy may offer emissions-free electricity , but it isn’t always easy for electrical grids to integrate that energy. Dutch company Alfen is launching their answer to the dilemma. The Cellular Smart Grid Platform (CSGriP) allows a central grid to be divided into smaller cells that can operate independently, if necessary, and even self-heal . CSGriP provides energy from sources like biogas , solar power , or wind power for local consumers. It includes “a 0.5 megawatt energy storage system and complex algorithm used for local energy management.” Should the central grid go out, local cells would take over to restore power for local customers. According to Alfen, “Once the grid balance within a cell is restored, it automatically reconnects to other cells, and, as such, quickly rebuilds the larger power grid” to reduce the duration of central grid outages. Related: INFOGRAPHIC: How a smart electric grid could reduce emissions by 58 percent in the US Alfen energy storage specialist Evert Raaijen said in a statement, “Unique about this solution is that the local cells are intrinsically stable through self-adjustment of supply and demand based on the frequency of the electricity grid. This makes the grid truly self-healing in cases of central grid outages. The self-healing mechanism based on frequencies sets it apart from many IT-related smart grids that require relatively vulnerable data and ICT connections for balancing local grids.” In developed countries, the point of the platform is to decentralize the grid and make it more ready for renewables. But the platform could also be deployed in developing countries that still need to be electrified, allowing them to avoid constructing central grids obtaining power from large fossil fuel -burning plants in favor of these local cells with storage systems for renewable sources. Alfen has worked in countries from the United Kingdom to the Czech Republic to Nigeria, on projects for electric vehicle charging , transformer substations, energy storage, smart grids, and grid automation. They are currently field testing CSGriP at the Application Center for Renewable Resources in Lelystad, the Netherlands . + Alfen Via Alfen Images via Alfen on Twitter ( 1 , 2 )

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New smart grid solution heals itself amid central grid outages

Grid resilience depends on distribution-scale solar

September 26, 2017 by  
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States and countries that replace old, costly fossil-fired generators with renewables and efficient DERs have found greater reliability and resilience at lower costs.

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Grid resilience depends on distribution-scale solar

Utility coalition invests in EV charging firm Greenlots

July 25, 2017 by  
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It’s another indicator of how critical electric vehicles could become to grid demand management.

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Utility coalition invests in EV charging firm Greenlots

Who needs ‘baseload’ power? (Or, let the markets do their job)

June 26, 2017 by  
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We should seize the opportunity presented by the Department of Energy’s grid study to ensure tomorrow’s electricity markets work in service of, not contrary to, our society’s goals.

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Who needs ‘baseload’ power? (Or, let the markets do their job)

Safety concerns overshadow energy-slashing potential of smart homes

May 31, 2017 by  
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Until technology companies address hacking incidents and other security issues, it does little good to talk up the environmental benefits.

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Safety concerns overshadow energy-slashing potential of smart homes

How the blockchain could fight grid cyber-threats

May 31, 2017 by  
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The electricity system is about to experience a several-orders-of-magnitude increase in the number of vulnerabilities to cyber-threats.

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How the blockchain could fight grid cyber-threats

Platform-based grids promise a power boost

April 26, 2017 by  
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Platform business models have redefined the modern economy. Next, it may redefine the electric utility sector through DSOs and DERs.

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Platform-based grids promise a power boost

Is employee activism on sustainability nearing a tipping point?

April 26, 2017 by  
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Most of those working for large U.S. companies expect their CEO to be vocal about environmental and social issues, according to new research. And when it comes to the issues they care about most, renewable energy trumps immigration.

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Is employee activism on sustainability nearing a tipping point?

Old, dirty, creaky U.S. electric grid could cost $5 trillion to replace

April 12, 2017 by  
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Where should our infrastructure spending go?

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Old, dirty, creaky U.S. electric grid could cost $5 trillion to replace

This German village generates 500% more energy than it needs

April 5, 2017 by  
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Wildpoldsried , a Bavarian village of about 2,600 residents, is leading the way in Germany’s extraordinary renewable energy transformation . Over the past 18 years, the village has invested in a holistic range of renewable energy projects that include 4,983 kWp of photovoltaics , five biogas facilities, 11 wind turbines and a hydropower system. As a result, the village has gone beyond energy independence – and it now produces 500% more energy than it needs and profits from sales of the surplus power back to the grid. Renewable energy projects in Germany have gained enormous traction in recent years, propelled by government subsidies that are designed to lower costs, reduce dependence on fossil fuels, and move the nation entirely away from nuclear power; this transformation is known as the Energiewende . As a result, Germans will soon be getting 30 percent of their power from renewable sources—that’s twice as much as U.S. households receive. On a local level, Wildpoldsried has far exceeded the successes seen across Germany. The villages’s commitment to renewable energy began in 1999, when the city council crafted a document titled “Wildpoldsried Innovativ Richtungsweisend” (WIR-2020, or Wildpoldsried Innovative Leadership). The document looked at how the town might encourage growth and invest in new community facilities without incurring debt. As Biocycle explains, the WIR-2020 contained three main areas of focus: “1) Renewable Energy and Saving Energy; 2) Ecological Construction of Buildings Using Ecological Building Materials (mainly wood-based); and 3) Protection of Water and Water Resources (both above and below ground) and Ecological Disposal of Wastewater.” Related: Renewables Recently Provided 74% of Germany’s Energy Demand Through these three areas of focus, Wildpoldsried sought to produce 100 percent of their electricity from renewable energy sources by 2020. But in a relatively small, engaged community where, as one resident explained , there is a notion of “thriftiness… I don’t need to buy what I can make,” the projects advanced much faster than anyone might have expected. By 2011, the village was producing 321 percent of the electricity it needed, and was receiving $5.7 million in payments for the surplus. The entire list of Wildpoldsreid’s projects is pretty remarkable: in addition to the five biogas plants, 4,983 kWp of photovoltaics, 11 wind turbines and the hydropower system, the town is also home to several municipal and residential biomass heating systems and 2,100 m² of solar thermal systems. Five private residences are heated by geothermal systems and passivhaus techniques have been used in some new construction. One is also likely to see a fair number of electric cars dotting about. Related: German State to Receive 100% Renewable Power This Year With such a diversity of renewable energy sources, the town operates a smart grid that, as Siemens explains “maintains the balance between energy production and consumption and keeps the power grid stable.” As Windpoldsreid’s Deputy Mayor, Günter Mögele, explained to the Financial Times : “I think people were surprised that the Energiewende is happening so fast,” and certainly it is not without it’s headaches for those looking at the issue on a national level. But Windpoldsried is a spectacular example of what can happen on a local level when residents and municipalities take matters into their own hands. + Windspoldried Lead image via Shutterstock

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This German village generates 500% more energy than it needs

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