Canada

Four AP1000s have been built in China. The Chinese also have an agreement with Westinghouse to further develop the design, so more are under construction, but those are heavily modified Chinese variants.

Four AP1000s were under construction in the US, two at the Vogtle generating station in Georgia, and two at the V.C Summer plant in South Carolina. The V.C. Summer reactors were cancelled during construction when the initial estimate was revised from $9B to $23B. The Unit 3 at Vogtle has finally completed commissioning and is online, and unit 4 should be completed this year. Costs have exploded from $14B estimate at the beginning of construction to the vicinity of $35B.

There are another 5 reactors planned for Turkey and Poland. I'm not sure where they're at currently.

For the EPR, the first unit to start construction was Olkiluoto-3 in Finland in 2005. It was supposed to complete commissioning in 2010, but finally was completed in 2022 and entered service in 2023. Costs went from €3.3B to €11B

Taishan 1 & 2 started construction in 2009 and were supposed to be completed in 2013. Taishan-1 entered service in 2018, and Taishan-2 in 2019. Though the third EPR project to start construction, these were the first in service. The final $7.5B cost was roughly double the estimate. Since then, unit 1 was offline for a year due to issues with the fueling. There have been some other reliability issues, some causing brief downtime.

Flamanville-3 started construction in 2007, was supposed to be commissioned in 2012, but is currently projected to be in service late this year. Costs bloated from €3B to a projected €20B at completion.

Hinkley Point C started construction of two EPRs in 2017, though a lot of site prep work started well prior to that. It was supposed to be online in 2023. Currently they're projecting 2028. Costs have gone from the initial £16B to a projected £33B.

The average age of a French reactor is 37 years. They get an initial license for thirty years then apply for ten year extensions. They have 56 operational reactors now, and have an ongoing 'grand carénage' refurbishment for mostly the larger units. The estimate for that was in the vicinity of €55B, though has shifted some what. The smaller, older units are being taken out of service.

More often than not, older reactors in the US are taken out of service rather than refurbished due to the economics. Globally there are 407-413 (definitions vary) operational reactors, down from 438 at the peak in 2002.