Solar city sets sights on ending pollution

As Britain and other countries debate how to meet the increasing demand for electricity while cutting back on greenhouse gas emissions, many people are looking at Navarre for inspiration.
It is a sparsely populated region of 600,000 people in an area half the size of Wales.
It is connected to the Spanish national grid and able to draw on gas, coal and nuclear generators when the wind does not blow or the sun fails to shine.

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