The basic requirement for nuclear to stack up is:
1. Government sees fossil fuels as a problem. That could be either for economic reasons (countries which import), practical ones (logistics of fuel supply etc) or environment (either climate change or local issues).
2. The government is keen on central planning of energy supply.
3. The government considers nuclear to be an option.
4. There is no option to build hydro as an alternative, or it has been ruled out for whatever reason.
Points 2 & 3 are mutually exclusive in most Western countries. Central planning is to the political "Left" of most major parties whilst nuclear is to the political "Right". Rarely do they meet. Since the free market approach doesn't generally favour nuclear, that results in few such projects in Western countries (and of those which do exist, they're often exceptions driven by government for political reasons or to retain skills).
New power reactors being commissioned in 2021. All power output figures are electrical power output and are total for the country in that year not per reactor:
2021:
Argentina = 1 reactor, 29 MW output.
China = 2 reactors, total 1361 MW.
India = 2 reactors, 1200 MW.
Slovakia = 1 reactor, 471 MW.
UAE = 1 reactor, 1400 MW.
USA = 1 reactor, 1250 MW.
TOTAL 2021 = 5711 MW
2022:
Belarus = 1 reactor, 1194 MW
China = 3 reactors, 3479 MW
Finland = 1 reactor, 1720 MW
India = 1 reactor, 700 MW
Korea 1 reactor, 1400 MW
Pakistan = 1 reactor, 1161 MW
Russia = 1 reactor, 1255 MW
UAE = 1 reactor, 1400 MW
USA = 1 reactor, 1250 MW
TOTAL 2022 = 13,559 MW
2023:
Bangladesh = 1 reactor, 1200 MW
China = 1 reactor, 600 MW
France = 1 reactor, 1650 MW
India = 3 reactors, 2700 MW
Korea = 2 reactors, 2800 MW
Russia = 1 reactor, 1255 MW
Slovakia = 1 reactor, 471 MW
Turkey = 1 reactor, 1200 MW
UAE = 1 reactor, 1400 MW
TOTAL 2023 = 13,276 MW
2024:
Bangladesh = 1 reactor, 1200 MW
China = 2 reactors, 2712 MW
Iran = 1 reactor, 1057 MW
Korea = 1 reactor, 1400 MW
Turkey = 1 reactor, 1200 MW
TOTAL 2024 = 7569 MW
2025:
China = 3 reactors, 3912 MW
Turkey = 1 reactor, 1200 MW
TOTAL 2025 = 5112 MW
2026:
China = 5 reactors, 4277 MW
India = 1 reactor, 1000 MW
UK = 1 reactor, 1720 MW
TOTAL 2026 = 6997 MW
2027:
China = 2 reactors, 2400 MW
UK = 1 reactor, 1720 MW
TOTAL 2027 = 4120 MW
Sourced from World Nuclear Association data.