China’s power ‘supergrid’ gives Xi buffer against energy shocks

China’s long-running effort to build out its energy sources is getting fresh momentum from the war in the Middle East, reinforcing a strategy that’s sent grid operators on a bond-selling binge and funneled hundreds of billions of dollars into the market.

The world’s No. 2 economy has become one of the biggest investors in power grids globally, spending heavily in recent years on infrastructure to absorb more renewables and curb its reliance on imports. Financing that growth has turned state-owned grid operators into the country’s biggest bond issuers, with sales hitting unprecedented levels and yields near historic lows.

The heavy investments highlight the central role of grids in Beijing’s strategy, which involves moving energy like wind and solar power from remote western regions into China’s industrial heartlands. Given the shock of oil supply disruptions, analysts say the pace of growth is likely to accelerate.

“China’s infrastructure build out is far more efficient than that of most countries, and the power grid is no exception,” said Penny Chen, a senior director with Fitch Ratings. As surging power pr...