I agree - it also defeats me why the government don't make a condition of planning approvals that (a) all new properties should have access to a charging point, and (b) mandatory PV arrays.
I think PVs have fallen from favour over the last few years as the feed in tariff has been reduced/removed making PV less economically sensible. This may change with the large increase in energy prices making savings more attractive.
What doesn't help, at least with flats, is that they are mostly leasehold and thus the freeholder (normally some rich person living in the Channel Isles) can demand as much as they like for the 'priviledge' of putting PV panels on'their' roof', thus making any payback from selling the electricity in the 15-25 year lifespan of the equipment far less viable, if at all.
And that's if you have the utility cupboard/riser space to install the new equipment and don't have to remove, then reinstall all the recently installed fire break materials (as my development would have to do [installed a year or so ago on the advice of the H&S 'experts']).
PV installations were actually getting quite cost effective in terms of payback, and probably why the feed-in tarrifs were being removed.
A final question - is it more efficient to install large numbers of PV panels on individual houses or large installations in fields.
An array in a field may be cheaper per kwh as installation and maintenance costs are spread across a large site. But the cost will be high profile and increase all customer bills.
On house roofs, the capital costs are never evident as it is the aggregate of a lot of small installations - to the government it looks like extra capacity for no effort.
They are really suited to properties with large expanses of available space for the panels and as little builderswork (groundworks for underground cabling in fields or cable routes, etc [as above] inside a property from the roof, preferably easy-to-install and get to flat surfaces.
Hence why warehouses, flat-roofed building with full roof access etc are ideal, given the sheer amount of usable and potentially easily accessible roofspace, and why farmers have been turning unproductive pasture pand over to PV farms - there's one quite large one near me.
Personally I think farms doing it is a bad idea, as we need to be as self-sufficient as possible as regards food production, especially in the light of recent worldwide developments.
It's often a good idea to look at PV installations - on domestic roofs at least - when the owner is looking to do significant other works on either the roof itself (repairs or re-roofing) or services interracting with it in a big way, e.g. heating systems (new flue[s]), etc. Saves on costs like cherry pickers or workers being required twice or longer overall.
Obviously some properties won't be able to have them installed for aesthic/planning reasons, which is potentially unfair, and I think where this is the case, they should be compensated via reduced Council Tax. TBH any home/building improvement materials/equipment should be also VAT free - not just on new builds, as I think it currently is.
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