What your roofwould make, andwhen it pays back.

EcoGrid is a Glasgow-based team of qualified electricians and renewables engineers. We design and install solar panels, home batteries and EV chargers, and we show you the generation and payback figures before you decide anything.

About 3,950 kWh a year from ten 465 W panels on an unshaded, south-facing roof, using the same figures as our quotes.

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You're the sun. Move your cursor to change where the light comes from.

Light angle18°

Relative output95%

Illustrative. Angle is one reason we survey your roof before quoting.

What it makes, what it saves

Your roof, in kilowatt-hours and years.

Set this up to look like your home. It uses the same prices, generation figures and payback method as our quotes, and every figure is listed underneath.

Generation, first year 3,950 kWh

Where that electricity goes

Worth in year one£0

Payback0 years

How we work it out The same figures as our quotes

Generation: 850 kWh a year per kWp of panels, adjusted for roof direction (south 100%, south-east or south-west 95%, east or west 85%, north 65%) and shading (none 100%, some 90%, heavy 75%). Output falls 0.4% a year.
Electricity: you save 25p for every unit you use from your panels instead of buying it, and earn 15p for every unit you sell back to the grid.
How much you use yourself: 55% of what the panels make with solar only, 67% with an EV charger, 82% with a battery, 88% with both. The rest is sold back.
Battery: as well as storing solar, it charges at 13.89p off-peak to cover up to 20% of the electricity you'd still buy. Battery benefits are counted for 12 years, with 2.5% capacity fade a year.
Price rises: electricity prices rise 5% a year. Figures cover 25 years.
Prices: our set prices by panel count and battery size, with 10% off when you have solar and a battery together. The EV charger is £1,695 fitted.

Export payments are paid through the Smart Export Guarantee, which needs an MCS-certified installation. These are estimates, not guarantees: real savings depend on your usage, tariff, roof, shading and future energy prices.

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How it works

One system, hour by hour.

Panels make it, the battery keeps it, the house and car use it. Drag through a day to see where every kilowatt goes, then switch to December, because a system that only works in June isn't designed for Glasgow.

Time of year

System

Jump to

Illustrative model of an example home with a mid-sized array and a 10 kWh battery, using Glasgow sunrise and sunset times. Your roof, usage and tariff will change every number here.

What we install

Solar, storage, charging. Designed as one.

Start with any of them. We design each one so the next can be added later without redoing the first.

Solar panels

Laid out for a low northern sun.

In Glasgow the midday sun climbs to about 58° in June and barely 11° in December. Your array should be designed with both in mind.

We measure your roof's pitch, direction and shading, then plan the panel layout and wiring around them, so a chimney or a neighbour's tree costs you as little generation as possible. We'll also be honest about roofs that won't give a good return.

We typically fit JA Solar 465 W panels. On an unshaded, south-facing roof at a typical pitch, each one makes about 395 kWh a year on the figures we quote with. Solar installations on homes are currently 0% VAT, until 31 March 2027.

What we look at

Roof direction and pitch
Shading through the year
Roof condition and structure
When your household uses power

June: about 17½ hours of daylight.

Battery storage

Keep the afternoon for the evening.

A battery moves energy from when you make it to when you use it. We size it to your evening demand and your array, not to the biggest unit available. On a time-of-use tariff it can also charge overnight, which matters most in winter.

Works with or without solar, including retrofits. 0% VAT until 31 March 2027.

EV charging

Charge from sunshine or cheap hours.

A smart charger can wait for surplus solar or run on an overnight schedule. We check your supply capacity and cable route first, so the charger, battery and house don't fight for the same headroom.

8,000 miles is about 2,300 kWh: roughly £570 a year at 25p, or about £190 on an 8.5p off-peak EV tariff.

Electrical services

The groundwork it all depends on.

EICRs, consumer unit upgrades and general electrical work. If your supply or fuse board needs attention before anything else goes in, we'll tell you and can do it ourselves.

Qualified in electrical design, testing and inspection.

Recent installs

Real roofs, photographed on the day.

Scaffolding and all. What matters is in the details: flashing that keeps the weather out, clamps where they should be, and mesh that stops birds nesting under the panels.

Solar panels flush-fitted into a slate roof — **Flush-fitted into a slate roof**Panels set neatly into the roof line.

Close-up of installed solar panels against a clear sky — **Finished on a clear day**A completed array, ready to generate.

EV charge point installed on an exterior wall — **EV charge point**A home charger fitted on an exterior wall.

Solar panels being installed on a large residential roof under construction — **A large residential roof**Panels going on as the build comes together.

Large-scale solar panel array on a commercial rooftop — **Commercial rooftop**A larger array for a business roof.

Our approach

Engineering first. Equipment second.

A good installation starts before the equipment arrives. Most of what makes a system pay back is decided at the survey and design stage, so that's where we spend our time.

If it won't save you money, we won't recommend it.

That includes telling you when a battery isn't worth it yet, or when a smaller array is the better design. We design systems around people, not packages.

Who does the work

City & Guilds qualified electricians and designers
BPEC trained in renewables installation
Qualified in electrical design, testing and inspection

We're working towards MCS and NAPIT approval. We'll only say we hold them once they're in place.

Assessment
A free survey of your property: roof pitch, direction and shading, your fuse board and incoming supply, and how your household actually uses electricity through the week.
Roof and shadingSupply capacityUsage pattern
Design
We size the system to your real conditions and show you the working: expected generation, how much you'll use yourself, and the payback, with every assumption written down.
Generation estimateBattery sizingPayback workings
Installation
Fitted neatly and safely, with equipment positions and cable routes agreed with you first, and grid notification handled for you.
Agreed positionsTidy cable runsGrid notification
Support
We test and commission the whole system, set up monitoring, and walk you through it, so you can check it's producing what we said it would.
Testing and commissioningMonitoring set-upHandover documents

Start a conversation

Tell us about your home.

A free, no-obligation survey is the quickest way to turn the estimates on this page into figures for your roof. No pressure and no hard selling.

Useful to have to hand

Your annual electricity use from a recent bill, a photo of your roof from the street, and a photo of your fuse board. None are essential for a first conversation.

Book a free survey Email us Call 0141 474 6006

Booking takes you to our contact page. If you've used the calculator, your email will include the estimate.

Call 0141 474 6006