Will they ever be available?
Completely illegal in the UK as it'd never pass the safety tests. After all, that front hitting someone would be insta-death.
Upgrading the grid infrastucture is a massive undertaking in some countries.
The UK grid is built around coal generation. With the shift to offshore wind away from population centres, new tranmission cables are required. Sadly there is excessive wind generation and suppliers are paid to shutdown. It is laughable.
Norway regularly has very high energy prices.. in fact, they're so high they want to cut exports.
The reason they're high is because of the grid in other countries being hit by low wind or grey sky days, pushing up the minimum pricing that they're also subjected to by being part of the same grid.
There are other cables as well. One of them runs through the chunnel. The UK regularly gets upto 10% of its supply from France (seasonal, time, cost dependant)
O&G production is in massive decline in the UK. Norway ramps up production to sell to Europe.
UK will just import more LNG from Qatar instead of drill more wells off the English coast and let its industry die. It's the coal mines all over again.
Have you ever tried forced rhubarb? It's sweeter then the standard grown. Pretty easy to do, but you'll need to wait until the end of winter: https://www.gardenersworld.com/how-to/grow-plants/how-to-force-rhubarb/