The Guardian reports: High on the Tibetan plateau, a giant poster of the Chinese president, Xi Jinping, guards the entrance to one of the greatest monuments to Beijing’s quest to become a clean energy colossus.

To Xi’s right, on the road leading to what is reputedly the biggest solar farm on earth, a billboard greets visitors with the slogan: “Promote green development! Develop clean energy!”

Behind him, a sea of nearly 4m deep blue panels flows towards a spectacular horizon of snow-capped mountains – mile after mile of silicon cells tilting skywards from what was once a barren, wind-swept cattle ranch.

“It’s big! Yeah! Big!” Gu Bin, one of the engineers responsible for building the Longyangxia Dam Solar Park in the western province of Qinghai, enthused with a heavy dose of understatement during a rare tour of the mega-project.

The remote, 27-square-kilometre solar farm tops an ever-expanding roll call of supersized symbols that underline China’s determination to transform itself from climate villain to green superpower.

Built at a cost of about 6bn yuan (£721.3m) and in almost constant expansion since construction began in 2013, Longyangxia now has the capacity to produce a massive 850MW of power – enough to supply up to 200,000 households – and stands on the front line of a global photovoltaic revolution being spearheaded by a country that is also the world’s greatest polluter. [Continue reading…]