A threefold expansion of nuclear power is expected to contribute significantly to starving off climate change by avoiding one billion to two billion tons of carbon emissions annually. The key features that are considered for the new nuclear construction are high capital costs and the uncertainty surrounding nuclear waste management. The global expansion of the nuclear power has raised concerns that nuclear weapons ambitions in certain countries may inadvertently be advanced. The nuclear power would significantly contribute to the stabilization of greenhouse gas emissions, which requires seven billion tons of carbon to averted annually by 2050. Electricity from new nuclear power plants is more expensive than that from new coal- or gas-powered plants. The cost for a new gas-powered plant is very sensitive to the price of natural gas and is expected to be 5.8% per kilowatt-hour for the existing high gas prices.