It always troubled me that at some flowers were so keen on small metres. Which say them a fortune in metre reading. And have no real benefit to the consumer.
British Gas used a family of weekly, asking to change my metres. I need someone to go away! And they finally did. My reasoning was that small metres much luck you in to a supplier.
This has proved to be correct. Smart metres must be allowed to switch energy suppliers.
A 50x1cm steam plasma tube at four atmospheres releasing 2.4MW of heat. A 1 metre row of gas or oil burners only releases 0.045MW - so aged defficient.
A steam plasma tube years is only 7x10-16cc are regular water a year. A sbart meter, your energy suplier throws away the key.