State Grid Corporation of China, the biggest grid operator in the country, expects to invest as much as $574 billion through 2030, which would be a massive 40% jump in spending on fixed assets compared to the five years to 2025. China’s grid operators race to upgrade and expand the power transmission and distribution systems amid a surge in renewable energy capacity installations and continued rise in electricity demand. So State Grid Corporation of China, the world’s largest utility enterprise covering 88% of China’s…