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 prices become a binding constraint on AI and manufacturing ambitions elsewhere, that advantage is set to widen.

Already, the country’s two largest grid operators — State Grid Corp. of China and China Southern Power Grid Co. — have issued 92.5 billion yuan ($13.5 billion) of domestic bonds so far this year, on top of a record 901 billion yuan sold in 2025, according to Bloomberg compiled data. The notes have been priced at an average 1.7% so far this year, an all‑time low.

State Grid operates power lines covering more than 80% of the country, delivering electricity to more than 1 billion people. Southern Grid handles most of the rest of the nation, including the economic powerhouse Guangdong. 

State Grid did not immediately respond to a request seeking comment.

The rush to fund power infrastructure has allowed State Grid, the world’s largest utility firm, to regain the title as the country’s largest bond issuer since 2024, overtaking major commercial banks and the state railway builder. The firm issued a record 754.5 billion yuan of bonds domestically last year alone, almost tripling the previous year’s total, after its capital spending increased by 20% a year earlier. 

State Grid’s average annual bond issuance could be around 1.2 to 1.4 trillion yuan over the next five years, according to Li Gen, founder of Beijing G Capital Private Fund Management Center. During peak construction this year and next, annual issuance could even exceed 1.5 trillion yuan, which “firmly cements its position as China’s largest corporate bond issuer” and even surpassing total issuance of many provinces.

The efforts are part of a plan by China to spend roughly 5 trillion yuan into electricity networks over the next five years, compounding record grid investment and borrowing since 2024 when transmission bottlenecks became more acute. The funds will be used to help build a supergrid to ensure renewable generation is properly transported.

In some ways, the grid investments highlight how energy security — once viewed as a lofty, long-term goal of President Xi Jinping — is now becoming an immediate and crucial source of economic insulation. China is keen to blunt impacts of a shortage of oil and gas experienced by neighbors like Japan and South Korea.

State Grid and Southern Power Grid are set to spend nearly 1 trillion yuan this year, with investment expected to keep rising through the end of the decade. According to Fitch’s Chen, state-owned grid firms tend to have robust balance sheets, which leaves adequate room to take on additional leverage. State Grid’s adjusted funds from operations cover interest expense roughly 14 times, exceeding the single-digit ratios of many overseas power utilities, according to S&P Global Ratings. 

Read more: China Emerges as Unlikely Haven as Oil Shock Hits Global Markets

But cheap and plentiful electricity requires more than just heavy spending. China’s transmission and battery-storage assets are underutilized, and the path to market reforms that would unlock them remains unclear. Questions are also mounting over how state grids will pay back record debt loads, especially if efficiency fails to improve. 

Still, the recent disruptions in the Strait of Hormuz underscore the logic behind China’s strategy. “These incidents highlight the importance of localizing energy sources to ensure security and stability,” said Lin Boqiang, director of the China Institute for Studies in Energy Policy at Xiamen University. China’s shift toward green energy is the right strategic move, he added.