For your second point it probably applied 10/20 years ago too, then it means you have an even smaller budget to make some economy. So even when doubling electr

For your second point it probably applied 10/20 years ago too, then it means you have an even smaller budget to make some economy. So even when doubling electricity price I fail to see how it could be possible to reach the two years originally mentioned. And I believe each time I have seen this 2 years figure mentioned it was probably USA centric conversation. I'm French and I had never heard of it before.