Rejected by Isis Solar

bikeman

My application for solar panels has been rejected by ISIS solar.

Two storey semi -detached
Roof area is 5m x 5m
45 degree pitch
South facing
No shading


They don't provide any detail of their criteria nor have they provided any explanation as to why my house is not acceptable. Any ideas why I dont meet their criteria?

celerity

What is the maximum kWp capacity they said you can fit on the roof? Maybe they have a business policy of only fitting systems close to the optimum (for FiT payments) 4kWp?

/\dam

bikeman

They provided no info to me. I just received a standard reply which listed possible reasons all of which I thought I met. How much roof space is required for a 4kw system?

celerity

I'm not sure to be honest - however, you could draw your roof on https://www.comparemysolar.co.uk and that would tell you your maximum array size.

/\dam

bikeman

According to compare my solar the roof has excellent potential

Your solar potential
99%
of an optimal roof
Year 1 payback
£ 520
for a 1kWp system
You have an excellent solar potential.

(learn more)

• Your orientation is South (196º). Optimal is South (180º), but SE till SW is still good.
• Your roof angle is 40º. Optimal angle is 35º till 40º.
• Your shading is none. Optimal shading is none.
• Solar insulation at your address is 1118 kWh/m².
• A 1kWp system would generate 23% of your electricity usage and give you a yearly return of about £ 520.
• 90% of roof = 3.2KWp, 72% of usage, Return £1651 pa

malch

bikeman wrote: »

My application for solar panels has been rejected by ISIS solar.

Two storey semi -detached
Roof area is 5m x 5m
45 degree pitch
South facing
No shading


They don't provide any detail of their criteria nor have they provided any explanation as to why my house is not acceptable. Any ideas why I dont meet their criteria?

My first enquiry was with ISIS and they were willing to put a 2.2KW system on my roof which is.

Two storey mid terrace
roof 20 m2
35 degree pitch
south facing
no shading

this was about 6 months ago the only thing that i can see that may make a real difference is location i am in Dorset, the only other thing that it might be is that they would like the biggest system to maximise their investment.
i declined their offer and bought my own.

anuvvasaver

Hi Malch,
I too was turned down by Isis for the 'free solar' offer as their 'survey' (conducted via google) said that my house was 6 degrees out from true south. Further investigation by myself using Ordnance Survey and my own house deeds show that my house is only 1.5 degrees out.
I wonder how many people actually get accepted onto Isis ( or other providers) free offer or if it a leader onto the 'however, we would be willing to install if you stump up £500 for the privilege'. Bearing in mind that on PREDICTED savings it would take 5 years to break even on a scheme where they are meant to be 'renting' my roof and making not insignificant amounts themselves anyway, I declined to join their scheme.
Southern Electric ( my current utilities provider, and whom I assumed to have a vested interest in how much I pay/they receive for electricity) also used the same excuse until I pointed out the above, whereupon they decided that the available space on my roof was borderline (? Surely the survey is accurate?) for a 3 kwp system.
In the meantime I have now ordered a 'free' system from Homesun (Solarshare) as my house seems to fit the requirements now ( do bricks and tiles swell in the sun thus giving a larger surface area / aspect?).
I would recommend Homesun (so far!) they have proven to be more than helpful, their agents and surveyors courteous and knowledgable and their site visit and survey were also FREE.

zeupater

bikeman wrote: »

..... How much roof space is required for a 4kw system?

Hi

Panels would likely be around 26sqm-30sqm and you'd need around 300mm-500mm of clear roof all around the edges of the array ... so depending on your actual roof dimensions and the panel specs the answer would be around 35sqm to a possible 40sqm.

HTH
Z