Christian Schwier/Shutterstock Save for later Print Download Share LinkedIn Twitter Design inconsistencies and the Covid-19 pandemic continue hampering progress at the twin-unit AP1000 Vogtle newbuild project in the US state of Georgia, increasing project costs by another billion dollars and once more pushing back projected operational dates: Unit 3 to the third quarter or 2022 and Unit 4 to the second quarter of 2023. But the slow rate of inspection approvals necessary for Unit 3's final green light doesn't bode well for meeting the new in-service targets.