Its really rather simple: They have not gone along with "green energy" and as a result they have inexpensive and abundant energy.
The average Russian pays less than 10 cents/kWh (US converted cost) for electricity. They have and do use some hydro and nuclear (about 20% each) but essentially all of the rest is carbon-based fueled.
Estonia of note recently told Russia to bite it and disconnected from their supply. The result was a 50% increase in cost immediately. While many are blaming this on cable disruptions the fact is that disconnecting from inexpensive and abundant sources has a price, and Estonians are paying it.
I will note that few places in the US have power costs anywhere near what Russia does and those that do are blessed with an abundance of hydro resource which is, of course, renewable (in that it rains) so once built your costs are confined to maintenance of the dam and generating turbines -- the "fuel" is provided by nature. But most of the United States and Europe, as they have increasingly eschewed carbon-based fuels for energy, have seen meteoric increases in cost. Were the citizens who allowed this and in many cases advocated for it given an honest assessment of said cost and did they thus accept it explicitly or were they lied to that "renewable energy" would be cheaper and better?
The truth is that renewables are neither cheaper or better in that they're unreliable and thus have to be backed up with something else because the wind does not always blow and the sun does not always shine -- in fact, at one of the times you want energy most, which is in the winter at 2:00 AM when its -20F outside the sun is never shining and wind is uncertain. As a result you must have a reliable and dispatchable alternative available and pay for that infrastructure all of the time or your electrical supply becomes unreliable.
It may be that this trade-off is one that the people of a nation will voluntarily make, when fully-apprised of the impact on their personal life. But one must also include in that the economic impacts and thus job impacts of such policy because behind every unit of economic output, which of course is the aggregate of all jobs and all labor, is a unit of energy.
All such choices have costs and while cleaning up energy production to a significant degree is inexpensive and quite easy completely doing so is in fact impossible no matter the form of energy unless you deliberately ignore some of the adverse effects and claim they don't exist. Damming rivers, for example, does indeed have a disruptive impact, making solar panels requires highly-toxic chemicals and the contents of the panels are quite toxic as well (other than the glass on the front, which is fairly benign.) Windmills require a huge amount of concrete to construct and the blades are non-recyclable, they're a petroleum product as they're made out of fiberglass and have a service life after which they must be replaced -- what do you do with the ones that are used up?
One serious problem in America is that inconsistency from administration to administration makes long-amortization projects uneconomic at the outset. Nobody in their right mind is going to invest in something with a 20 or 40 year period during which it is expected to produce revenue when an administration can turn over in four year or Congress in two and suddenly outlaw it. That leaves the investing firm with a smoking hole in their balance sheet and no recourse, thus firms will simply not spend the money beyond their own bare minimum requirements.
I put forward a potential long term energy policy 14 years ago ago that resolves many of these issues but without hard evidence that it would not be destroyed the next time someone else takes office nobody is going to do the engineering work to complete that and then build it out. Such a policy and implementation would provide both stable electrical supply and petroleum fuels on a forward basis for hundreds of years but in order to actually do so you have to convince industry that their investment will not be destroyed by a Presidential pen two or four years hence, exactly as Keystone was by Biden and nuclear reprocessing was by Carter.
Are we ready to resolve that problem? There's no evidence we are at this point but again, if you want economic progress you must solve this because the laws of economics are not suggestions and behind every unit of economic output is a unit of energy.