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Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 1:07 pm
by dan_b
https://www.theguardian.com/environment ... nd-by-2027
Let's hope the big building companies don't just do the bare minimum tick-box installs, or hopelessly compromised systems with inherent shading.
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 1:11 pm
by AE-NMidlands
You beat me to it!
Almost all new homes in England will be fitted with solar panels during construction within two years, the government will announce after Keir Starmer rejected Tony Blair’s criticism of net zero policies.
Housebuilders will be legally required to install solar panels on the roofs of new properties by 2027 under the plans.
The policy is estimated to add between £3,000 and £4,000 to building a home but homeowners would save more than £1,000 on their annual energy bills, according to the Times.
and for once the Times is correct: My annual bill has dropped from £2.5k down to just over £1k (all gas), back to the amount it was in 2020, although our useage has dropped slightly.
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 1:41 pm
by Stinsy
To save £1000 a year at 20p/kWH means a 5kWp array.
That is more than I expected and will be pretty decent for the people who live in those houses!
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 2:08 pm
by AGT
Persimmon chucking 3 panels per house around my way..
Better than nothing but could be the whole roof, it probably ticks an EPC box
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 2:31 pm
by AE-NMidlands
AGT wrote: ↑Thu May 01, 2025 2:08 pm
Persimmon chucking 3 panels per house around my way..
Better than nothing but could be the whole roof, it probably ticks an EPC box
I have noticed very variable numbers of panels on sister new-builds. It made me wonder whether the house came with maybe a couple as standard (so all the trunking/ducting and inverter/(potential?) battery locations would be installed or allowed for) and then the purchaser could ask for more panels and a bigger inverter if they paid an extra amount...
Another possibility is that some of the buildings are apartments and it is the same kWp, but per dwelling.
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 2:51 pm
by Stinsy
AGT wrote: ↑Thu May 01, 2025 2:08 pm
Persimmon chucking 3 panels per house around my way..
Better than nothing but could be the whole roof, it probably ticks an EPC box
It lets them skimp on insulation elsewhere!
I see houses with enough room for a dozen panels fitted with 5. One row of 3 and a row of 2 beneath. How hard would it've been to fit two rows of 3?
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 2:56 pm
by AE-NMidlands
Stinsy wrote: ↑Thu May 01, 2025 2:51 pm
AGT wrote: ↑Thu May 01, 2025 2:08 pm
Persimmon chucking 3 panels per house around my way..
Better than nothing but could be the whole roof, it probably ticks an EPC box
It lets them skimp on insulation elsewhere!
I see houses with enough room for a dozen panels fitted with 5. One row of 3 and a row of 2 beneath. How hard would it've been to fit two rows of 3?
Does 5 panels fit with a 2kW inverter? Maybe there's a step-change in price if you go bigger...
Re: Solar mandatory for newbuild from 2027
Posted: Thu May 01, 2025 3:02 pm
by Stinsy
AE-NMidlands wrote: ↑Thu May 01, 2025 2:56 pm
Stinsy wrote: ↑Thu May 01, 2025 2:51 pm
AGT wrote: ↑Thu May 01, 2025 2:08 pm
Persimmon chucking 3 panels per house around my way..
Better than nothing but could be the whole roof, it probably ticks an EPC box
It lets them skimp on insulation elsewhere!
I see houses with enough room for a dozen panels fitted with 5. One row of 3 and a row of 2 beneath. How hard would it've been to fit two rows of 3?
Does 5 panels fit with a 2kW inverter? Maybe there's a step-change in price if you go bigger...
I don't know the reason. I guess that was enough solar capacity to save enough EPC points to fit thinner insulation...