From my own investigations many years ago (YT) is was demonstrated that with an array of solar panels and a grid tied inverter when the sun shines the old disc type meter would go backwards so effectively reducing your bill unless you used more than you gained during the evenings.
I truly believe this is what prompted the development of digital and so called smart meters as they also allow the energy to pass through to the grid but not allow the meter to wind back so effectively stopping the customer from gaining any benefit but allowing the energy companies to sell the freely gained energy to other customers. Yes some have a feed in tariff but it such an insultingly small amount that it's just not worth the bother.
Energy companies are there to make money, neither the environment or the customer mean anything as it's all about profit.
So if you have a similar arrangement and you're forced to have a replacement meter you will need to find a way to store your solar energy and not give it freely to the grid to be sold for profit.
I thought it was worth a mention.
Edit:
https://www.ukworkshop.co.uk/threads/diy-powerwall-battery.148821/