You could perhaps compare notes with the author of [0] who did manage to achieve multilateration with rtl-sdrs using TDoA.

[0] https://jenda.hrach.eu/

Oh wow that's a fantastic resource thank you!

> In Spain, electricity provided by solar increased 8 percentage points Y/Y, from 16% to 24%.

This increase is only for the month of July, not Y/Y.