The American Enterprise Institute (AEI) has data on Russian oil and energy. The AEI also represents US oil companies, but I hope the data is sound.
Russian electricity sources are 68% fossil fuel, 20% hydro, and 11% nuclear. I am aware that this differs from the EIA data, because this includes hydro and nuclear, wheras EIA only quotes renewables and others as 10%, and leaves out hydro and nuclear.
They have 33 reactors producing 23.6 GigaWatts. 10 new reactors are under construction. Another 25 reactors are being planned by 2025. Russia’s goal is to have 70-80% of their electricity to be nuclear by 2100.
The state owns 56% of oil production, with the leading company Rosneft accounting for 48% of total oil production. Russia exports 5 million barrels per day. (If you calculate that at the current price at $100 per barrel, it comes to $180 billion a year gross.)
Oil and gas revenues for Russia are $215 billion a year.
Russian oil companies are taxed at a 70% rate.