VVER-1000: 4 R/Electricity/Year, slowly approaching 2.67 R/E/Y after 30 years of operation thanks to the +20 RpY rebate
In comparison we have...
Supercritical Coal: 2.67 R/E/Y
Combined Cycle Gas: 3.33 R/E/Y
Hydroelectric Projects: Varies heavily and also mostly tapped out, but somewhere around 3.25-3.75ish R/E/Y
VVER-500: 8 R/E/Y
So Atommash did literally more than double the efficiency of nuclear power spending, and thanks to the rebate it's competitive with gas on a 10-year timeline and coal on a 30-year timeline, so even without any license extensions the Atommash VVER-1000 is still competitive with coal when counted over its lifetime. When accounting for the cost of coal mines, gas fields, etc. that are additional costs to the coal/gas power in excess of their autodice construction costs then nukes probably break even after something more like ~8 and ~20-25 years with gas/coal respectively, but that's much harder to neatly quantify and also then I'd have to count Atommash in with the cost of nukes, so just call it a wash bc I don't want to do math today.
And of course even if nukes are competitive from the perspective of us in the year 2000, it's currently 1975 and we have to cough up all the capital up front that we won't see properly returned until the 2000s/2010s.