Growing competition from renewable electricity and rising costs of new plants are having an impact on the nuclear energy industry, but China and Russia continue to build new nuclear capacities, supported by energy policies and significantly lower construction costs, S&P Global Ratings said in a note to investors (registration needed).S&P said it sees “little rationale” for new nuclear in developed markets, but China and Russia have established nuclear expertise, a largely state-owned supply chain, and funding from the government or from state-related banks.