Eco adaptations to older houses

[TobiasToad]

I've been inspired by the Super Homes website and looking at doing some improvements to improve the energy efficiency of our home. It already has an EPC 'C' rating. I'm looking at solar panels and heat pumps. Does anyone have either? Heat pumps particularly are a new one on me. The main motivation behind this is environmental, this is a 'forever' home so not in a rush to make the money back. Are there any other things anyone has had done? The house is being renovated so I'm keen to work in energy efficient changes during the planning.

@PigletJohn so far the solar panels made 317kwh this month. Quote for solar panels plus tesla was 12k however we withheld money as the quote included that we could charge the tesla on economy 7 during the night when weather is rubbish. They failed to mention that this option is not available in the U.K. yet. According to tesla they're in process to get the licenses or whatever they need to be able to sell it in the U.K.