Westinghouse Electric Co. expects to put fuel into its first nuclear plant in China this year as it moves closer to start up and vies for a share of a market that may see $1 trillion in spending to boost production through 2050.

Westinghouse, the Pennsylvania-based unit of Japan's Toshiba Corp., is preparing to fire up its AP1000 reactor in China after years of delays. It is one of four reactors using the company's technology being constructed in China, split between two facilities.

"As with any new technology, we have worked through a number of first-of-a-kind issues, and those are largely behind us now," Jeff Benjamin, senior vice president of new plants and major projects at Westinghouse, said in a phone interview on Friday. "Our commissioning and startup activities are progressing smoothly."