The tax breaks though, were totally an own goal.
Hello from Texas, where electricity providers are free to pass on absurdly-high energy prices to customers, regardless of whether those people can afford to eat or not.
Reading https://www.bruegel.org/dataset/national-policies-shield-con..., the UK allocates about double of what France, Italy and Germany allocate to it.
And whilst the fiscal impact of the top rate tax cut (or indeed not introducing energy company windfall taxes) may not have been that huge relative to the energy subsidy, the signal sent by the the triumphal announcements that borrowing to cut taxes would solve problems was that the government wasn't just making emergency funds available to resolve a crisis, but has ceased to care about balancing their budget or inflation and doesn't really know what it's doing.