Own the electricity your roof makes.
Solar makes it. Storage is what keeps it.
Panels only generate while the sun is up. A battery is the difference between selling your afternoon at 16p and still running on it at nine at night, instead of buying it back at 28p.
Set your bill and the way your roof faces. The instrument sizes a system and plays a full day through it, hour by hour.
Running straight off the roof
Sized on 28p/kWh and a 45p daily standing charge. Generation is the MCS calculation — kWp x 926kWh per kW for an unshaded south-facing roof in this region, 760 east/west — at a 30 degree pitch. The day above is a good one in the best month, about 1.8 times the average day.
An indication of size and output, not a performance estimate and not a savings figure. Your MCS performance estimate is worked out for your own roof — its pitch, its orientation and its measured shading — and comes with the written quote after the survey. What your bill does then depends on your tariff and how much you use during the day.
Most of it arrives between April and September.
Which is the argument for storage. The roof makes far more than the house can use on a summer afternoon, and nothing at all at seven on a December evening.
The shape is measured from the monthly production charts in our own MCS proposals, scaled to this system. It is generation, not bill savings — what that is worth depends on your tariff and how much you use during the day.
Surveyed and installed by the same team, start to finish.
No subcontracted crews and no call centre. The person who quotes your job is the person who fits it, and the one who picks up when you ring afterwards.
Prices, on the page
Three systems we quoted this month, at the price we quoted them. You shouldn’t have to fill in a form to find out what it costs.
10 panels, 4.85kW
South-facing semi in Solihull, with 10.2kWh of storage. Quoted to save £1,149 a year against a £97 monthly bill.
16 panels, 7.76kW
East/west roof in Birmingham, 10.2kWh of storage. Two aspects, so it generates from breakfast to teatime rather than all at noon. £1,095 a year.
16 panels and whole-home backup
7.76kW with 24.18kWh of Sigenergy storage and a backup gateway, so the house keeps running in a power cut. Quoted to take the bill into credit.
Real quotes, issued September 2026, with the customer’s details removed. Every one includes scaffold, mounting, MCS certification, building control notification, DNO approval and bird protection. A 10% deposit books the date; the balance is due on completion. Your own figure depends on your roof and is fixed in writing at survey.
Recent work
See the gallery
How it goes
Free survey
The roof, the consumer unit, the cable route, and how you actually use electricity through the day.
Fixed quote
In writing, specified for your property. Not a penny more on the day. A 10% deposit books the date.
Installation
Cables concealed, site left clean. Most homes are a day or two on site.
Handover
Certification, the DNO paperwork and your monitoring app, all set up before we leave.
Vetted by the people who supply the energy.
Independent companies selected, vetted and monitored by Octopus Energy against safety, quality and customer-service standards. Not Octopus employees.
Green Leaf are also a Tesla Powerwall Certified Installer and a Fox ESS Registered Installer, MCS certified for solar, NICEIC Approved Contractors and members of the Renewable Energy Consumer Code.
“Green Leaf were fantastic throughout, from initial communications to the installation. Ended up with a very clean and efficient installation just as my prices were set to rise.”
“Cost wise, Green Leaf were cheaper than all other companies I looked at. He did a very thorough quotation and charged not a penny more.”
The questions everyone asks
Yes. Output is lower than in bright sun, but panels generate from daylight rather than heat — a grey Midlands afternoon still produces. It's why we size systems on annual generation, not peak output.
It depends on the roof, the orientation, your tariff and when you use electricity — which is why nobody honest quotes a single number online. The instrument above gives you the shape of it; the survey gives you the figure.
Yes — storage can be fitted alongside a new system or retrofitted to an array you already have. If the house is empty during the day, most of what the roof makes gets exported for very little; storage keeps it for the evening instead.
Solar alone shuts down in an outage for safety. With battery storage you keep backup power that starts automatically, so the lights and the essentials stay on when the grid goes down.
Find out what your roof would do.
A free survey, a fixed written quote, and no obligation to go ahead. Slots this week across Solihull and Birmingham.
- We call you back the same day
- Free survey — no obligation, no pushy sales
- Itemised quote in writing, fixed before we start
