Thanks in advance to any replies
Best answer by Transparent
There are loads of different questions embedded in what you've posted! :)
Firstly, you should be delighted... and definitely not worried!
There are different types of contract used when solar-panels are installed and Grid-connected. Hopefully others with solar panels will comment more on this as mine are off-grid. But your solicitor should be handling this as part of the house sale. It's important that you are informed about the Feed-In-Tariff (FIT) for that particular installation.
Do you know if the house already has a Smart Meter installed, and which Energy Company currently supplies the house?
Next year you will start to see a number of alternative strategies emerge whereby Energy Supply Companies will start to offer electricity tariffs which vary throughout the day. These also allow more flexibility in how and when you sell your solar-generated power to the Grid, if you choose to do so.
For example, owners with electric vehicles, or homes that get fitted with Grid-connected battery-storage, can elect to use the solar-energy to charge these devices. You can then instruct your Energy Supplier to resell your stored electricity for a profit at a level predefined by you.
These emerging technologies operate on top of the forthcoming SMETS2 software for Smart Meters, which isn't yet available. No one yet knows whether it will be more financially viable to retain the income from your own FIT, or whether Energy Suppliers will pay a better rate if you instruct them to resell your energy in order to meet peak demand.
These topics will progressively be discussed further on this Forum once details of the technology and matching tariff structures become available.