The quickest and best way to sideline russia is to take your money they had for heat pumps and use them on weapons. Putin is making Europe look like a laughing stock because they have folded to Putins threats about nuclear war and he has bluffed them into buying heat pumps instead of ballistic missiles. Europe still has their thumb up their ass singing Kumbaya and buying heat pumps while their traditional protector USA is giving every signal this tradition has ended and Europeans must spend this money to ramp up protection for themselves.

You are not going to get your way out of this with more efficient energy grids or heat pumps and using your money on that instead of bullets is the fool's way out if your goal is to sideline Russia. Of course the most hilarious thing is to think we aren't all still buying "sanctioned" russian products and they totally aren't being "smuggled" and then rebranded as Chinese or myriad of other sources -- which in fact offers options to INCREASE profits to Russian and Chinese government since now they can squeeze their citizens for payoff money to wash their products as non-Russian to bypass sanctions.