My energy provider uses a tracker tariff which can change every half hour (it does have a maximum cap to prevent the issues seen in Texas). Prices are currently negative, so every kWh I use right now means the electricity company pays me.

Nuclear promised energy which was "too cheap to meter". But solar actually delivered.

My guess is that £20bn/year is a fair cost overall in subsidy payments. This is clearly not offset by natural gas fuel savings even with elevated prices.

The UK IMO made a couple of critical mistakes. Firstly, far too much offshore wind is in Scotland when it should have been closer to population centres in England. A few factors for this but the issue is planning is devolved to Scotland (so they have every incentive to approve as many) but energy subsidies are set by Westminster. By the time UK central government realised this it was too late (or they didn't want to rock the cart for political reasons post/during Scottish independence referendum).

We're now having to pay £20-30bn+ to get Scottish wind generation down to England where it is needed (primarily through new 5 (!) 2GW HVDCs from Scotland to England). It would have been far far better just to... build those wind farms closer to England. This would have still required grid upgrades but far cheaper ones (bringing it 100-200km to population centres instead of all the way from Scotland, plus you still need to do the ones in England on top of that for the most part to get it from the HVDC landing sites to the population centres).

The second major issue is there is definitely massive diminishing returns from adding more renewables at this point. There's too many renewables on the grid a lot of the time, even if transmission was perfect - supply is outstripping demand. Instead of building more and more generation the subsidies should be redirected towards storage projects.

But overall, for the same £20bn a year you could have probably built 5 Hinckley Point C sized 3.2GW nuclear plants concurrently (assuming £4bn a year capex for 10 years). In 20 years you'd have probably 30GW of nuclear built, which should cover nearly all electricity demand in the UK in that time, with very limited transmission costs (existing nuclear plants have good grid connections and you build them close to them). And importantly, you would basically eliminate _any_ dependence on gas from the UK grid. Clearly nuclear has risks in project delivery, but at least it's reliable once built.