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Harvesting Energy from the Sun – Perspectives from a journey through China

02/08/2017 by Paul Ducker 1 Comment

In recent months the world has turned to China to find new hope for renewable energy, especially with Trump and Brexit looming as threats to sustainability. In 2016 China almost doubled its solar capacity from 42.88 gigawatt in 2015 to 77.42 gigawatt in 2016. For comparison, solar capacity in the UK was 11.5 gigawatt in 2016.

In the following, I would like to share some personal impressions based on my recent journey through China. The first point that I found striking was the difference between the two most visible ways to harvest energy from the sun: solar water heating and photovoltaic for electricity. The first is visible almost everywhere in China: it is installed on the rooftops of newly build apartment blocks, but also on the roof tops of the houses of the poorest. No matter where I travelled to in China, solar water heating was there. It seems to be a decentralised solution, a way for households facing energy-poverty to generate warm water, which is a contrast to the West were more affluent households invest in solar energy.

Out of the window on the train to Dunhuang

The case of photovoltaic is different: whilst there were some modules on new buildings in Beijing, the most impressive display of photovoltaic that I have ever seen was in a rural area in the North of Gansu province, close to (inner) Mongolia. Sitting on a train to Dunhuang and looking out of the window the only thing I could see passing by for more than one hour were photovoltaic panels and windfarms. The size of these sites clearly indicate that these are commercial mega-projects. In contrast to the solar water heating I have never seen photovoltaic being used in poor neighbourhoods or villages.

It will be interesting to follow the future development and to see how these two very different approaches develop. Will we see more decentralised efforts of people trying to satisfy their personal energy needs or will we see more centralised mega-projects, replacing traditional power plants?

Christoph Biehl

References

https://www.reuters.com/article/us-china-solar-idUSKBN15J0G7 (accessed 02/08/2017)

http://theenergyst.com/uk-solar-hits-11-5gw-up-19-in-2016/ (accessed 02/08/2017)

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Filed Under: Energy, Featured, News and views Tagged With: international, photovoltaics, renewable energy, solar, water heating

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Comments

  1. admin says

    16/08/2017 at 11:38 pm

    Very interesting, to il looks like battery storage in the little houses but I don’t like the shadows that they cast. Truly a monster array.

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Reading Sustainability Centre

We are an education project linked to Transition Town Reading and Reading Hydro. Our goal is that Reading is recognised as a leader in practical action on sustainability, as well as a great place to live.

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