Year: 2015


How batteries can stabilize the grid

With Tesla’s announcement of battery storage systems for households, storage for photovoltaics has become a major news item. Furthermore, one of the main questions about the energy transition is how the grid will be stabilized without central power plants. Craig Morris visited German battery firm Younicos and got an answer to this question.

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Prokon as a test for community energy

German utilities have gone on a shopping spree, taking over struggling planning firms to gain sorely needed expertise and assets. The trend can be heralded as a sign that these firms are finally taking part in the energy transition – or as a potential threat to the community cooperative movement that fostered the Energiewende all along. Craig Morris says the fate of Prokon is exemplary in this respect.

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Grid defection and why we don’t want it

The Rocky Mountain Institute (RMI) recently deepened its investigation into retail and commercial power customers using solar and battery storage instead of the grid. Craig Morris says the study is especially useful because it shows utilities that fighting the trend will only make things worse.

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An Alaskan island goes 100% renewable

Kodiak Island in Alaska has traditionally had a lot of hydropower but needed to cover the rest of its demand with expensive and dirty diesel. Now, with the help of wind power and the introduction of different smart-grid measures, the island receives 100% clean energy: Power prices have gone down and the local economy has been revigorated. Laurie Guevara-Stone reports from the sustainability frontier.

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Asia at the crossroads: will it choose old energy – or turn to the new?

Asia is at a critical moment in its energy development. Hundreds of millions of people across Asia will be gaining access to modern electricity systems for the first time in the coming years. The question is: will they be supplied with power from traditional central plants, or by low-carbon, distributed power systems? According to David Fullbrook, senior consultant with DNV GL Energy’s Clean Technology Centre in Singapore, people in Asia would benefit greatly from a transition to clean energy. But he notes that this will only happen if policymakers chart a clear course towards such a future.

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Germany to miss its renewable energy target for 2020

While Germany roars ahead with renewable electricity, too little is happening with heat and transportation. Now, a study finds that Germany is likely not only to miss its carbon reduction target by the end of this decade, but also the target for the share of renewables in all energy. Craig Morris says the Germans are clearly stumbling through their Energiewende – and that’s good news for other countries going down a similar path.

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South Africa’s growing renewables

South Africa has been in the press for all the wrong reasons. The grid is failing due to lack of upkeep and ‘new build’. There are concerns about corruption and overspending ahead of a massive planned nuclear fleet. And private energy interests are scouting around the water-scarce Karoo for shale gas. What hasn’t had as much media time is the fact that large-scale renewable plants are coming on-stream fast. Local science writer Leonie Joubert takes a closer look.

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