Electric combi boilers / solar panels / eco heating solutions

Update on our two projects:

ASHP

1. Final cost is £2700 for a 7Kw Daikin ASHP, new water tank (and relocation from centre of house to garage), removal of boiler, swap out of three radiators.
   
2. Install looking like being May next year though (!)
   
3. Having arguments with a daft person at Octopus who doesn't understand that AC units are not ASHPs in the Govt definition and so this install does not require planning permission. The local planning officer I chatted with this week described the request for planning permission as 'aggressively unusual'
   
4. Trying to work with them to split the system as we have wet UFH on the entire ground floor. Running that at 40 deg and the rest at 50 deg would mean a 3.48 COP upstairs and a 4.02 COP downstairs rather than 3.48 everywhere so some money / energy to be saved
   
   

Solar / Battery

1. We can fit 9x415W panels the rear (SSW) elevation of our garage so we're now discussing adding a further 9 to the other side for all day generation as panels are so cheap vs cost to install in one go
   
2. Probably going for 7.4Kwh battery but looking at potentially 9.6 to maximise overnight usage for AC / hot water & heating
   
3. Installation looking like January now