That ignores operating costs and battery costs are falling fast and your assumptions seem overly pessimistic. A 2025 project in Italy came out at $120/kWh made up of $70/kWh in equipment and $50/kWh in engineering and grid connection costs. (The grid connection will still be good and concrete pads can be reused so replacing after 20 years will cost less even before price drops in equipment.)

Even with a 7% cost of capital that gives a levelized cost of storage of $65/MWh or an additional $33/MWh on top of the levelized cost of electricity of solar to spread it across day and night [1].

With a 4% cost of capital the still being designed EPR2 with 30% savings over Flamanville 3 comes in at €93/MWh or $110/MWh [2].

So solar costing less than $77/MWh or €66/MWh + storage should be cheaper than EPR2.

[1] https://ember-energy.org/latest-insights/how-cheap-is-batter...

[2] https://itif.org/publications/2025/09/02/lessons-from-france...