Ooooerr.... You need to get back to whoever did the conveyancing, as something is VERY VERY wrong here....
Before the property was conveyed to you, the conveyancer should have made the vendors solicitor confirm that the obligations to the creators of the charges had been discharged, and then subsequently had the entries on the cert referring to same removed.
As it is now, you better hope that the loan registered in 2019 and the registered charge entered in 2021 have both been sorted, as YOU are now liable for them..
What you have done, is to buy the equivalent of a car with outstanding finance..
God knows how you even managed to have the land conveyed to you, as no reputable conveyancer would have done this without making sure that the charges had been removed by THE VENDOR..
Now, either YOU are subject to them and could be forced to settle the debts or be forced to sell. OR, you will find that you will not be able to sell the land or get a mortgage without having the charges removed, and this will be very difficult and very expensive too..
Solar panels, are the least of your worries..
Suggest you get back onto whoever did the conveyancing and tell them to sort this out..
john..