Ah well, you know where you're heading! Cheers.kla456 wrote: ↑Tue Sep 03, 2024 1:30 pm Hello Joeboy,
I'm focused on quantity of renewable generation towards nett zero, not current ROI. PV will generate over 25 years (beyond my life, but I have children) and many changes/tech improvements/Gov.interventions can be expected over that period which can upset current ROI calculations - just look at the impact of Octopus GO on EV charging, and on the ROI of batteries, or impacts when the bills come in for Hinckley Point, and many other currently unimmaginables.
Therefore its kwh of renewable generation and the current purchase cost, for me.
Ripple is perfect for those reaching for nett zero but hampered by the difficulty/cost of passiv-haus refurbishment. What's the refurbishment cost to save 5000kwh annually compared to the same investment in Ripple. I believe many (most) existing buildings (all of which must achieve nett zero by 2050) should not be refurbished but should have an equivalent investment in Ripple shares attached to the property deeds , to better effect and all the investment goes to renewable energy production instead of cu.m. of eps. and replacement of building components that may still have useful life.
To answer your questions:
I have DW (estimated 2050 kWh annually) which cost £2.2k.
70% of my last years' import was at the low rate (Octopus GO).
Although, knowing how far cash can be stretched in the secondhand market I'd be pricing out as diy at about £450 per 1kW PV install and I'd groundmount it then use the money saved once live to roll over into further RE projects. Ripple being one candidate. Looking at it from different ends of the telescope?
Also I see roi as a means to an end not the end itself. By this I mean financial freedom to choose in a timely fashion going forward and not be hemmed into the one RE chute that has rising operating costs and curtails my ability to manouvere. Horses for courses I suppose.
Lastly, how far off is WB before delays? A diy groundmount can be knocking out power within 24hrs and as a bonus can have hideyholes for wee beasties.