[WinstonSmith84]

it's not "now", it's 2024 price. "Grid synchronization" doesn't mean, subsidized by Russia, it just meant that Russia provides energy if Estonia didn't produce enough energy, and the other way around (though it likely never happened). It's clear though that Russia was not selling at inland price.

[Symbiote]

According to Wikipedia, Estonia did sometimes export energy to Russia.

I don't know why this should be surprising.

https://en.wikipedia.org/wiki/Electricity_sector_in_Estonia