Sizing from your own bill · installation with a workmanship warranty · paperwork for the grid connection
Solar power

The system’s figures, before you sign.

Watts per square metre worked out from the dimensions, kits by kW, and the annual yield multiplied from the figure we write, with its source beside it.

The film runs without sound and stays still if you have turned on reduced motion in your system.

Panels, inverters and batteries

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Three ways to have it fitted

The same rows on every option: what is included, what is not, who is responsible.

The kit onlyKit and installationMost chosenTurnkey
Who it is forAnyone with an electricianHouses with a simple roofAnyone who wants no hassle
What the price includesPanels, inverter, mounting, cablingThe kit plus labour and commissioningEverything, including the grid connection file
Who installs itYou, with your electricianOur own crewOur own crew
Who handles the permitsYouYou, with the documents from usUs
Workmanship warrantyThe product warrantiesThe product warranties plus the workmanship oneThe product warranties plus the workmanship one

Installation prices are quoted after we see the roof, not from a table.

From the energy bill to commissioning

What happens, in order, and how long each step takes.

  1. You send a bill and a photo of the roof 5 minutes

    The bill shows the annual consumption, the photo the orientation and the shading. Without them, any yield figure is a guess.

  2. You get the sizing 2 working days

    How many kWp, how many panels, which inverter and what yield comes out at your area’s figure — with the source written in the report.

  3. You confirm the kit

    The order goes through like any other in the shop, with an invoice and the warranties in order.

  4. The installation 1–2 days per house

    Mounting, panels, inverter and the board. The roof is left closed as it was found.

  5. Commissioning and the paperwork on the grid operator’s schedule

    The checks, the inverter settings, then the documents for the connection. The timings here are not ours.

The durations are from our projects so far; the connection file depends on the grid operator, not on us.

How we work it out

A multiplication written in the open, not a promise

Annual yield is not guessed: the system size is multiplied by the area’s yield per kWp. We write that figure with its source beside it, and where the source is missing we show no figure at all.

Why we do not quote figures on the spot

A south-facing roof and an east-facing one, with the same kit, give different yields. So do two neighbours, if one has a walnut tree in the yard.

What turnkey means

The kit, the installation, the commissioning and the connection file. What is not up to us — the grid operator’s timings — is stated separately, so it does not read as a promise.

A full spec sheet

Wp, efficiency, voltage.

Watts per square metre

Worked out from the dimensions.

Two warranties, stated separately

Product and performance.

Sizing from your own bill

Not from what fits on the roof.

Questions before the installation

What people ask us most often on the phone.

How many kW do I need?
You start from the annual consumption on your bills, not from what fits on the roof. Send us a bill and we will say which system covers your usage.
Why will you not tell me the yield right away?
Because yield depends on orientation, pitch, shading and area. We multiply the size by the yield per kWp only where we also write where that figure comes from.
What is the difference between the product and performance warranties?
The first covers defects in the panel. The second states how much power is left after a number of years in the sun. They are two different figures and we write them separately.
Does any battery work with any inverter?
No. The “what works with what” table shows the inverters we carry and the batteries each one accepts. A battery the inverter does not know stays an expensive box on the wall.

Cannot find your question? Write to us, we answer the same working day.

Panel prices and new kits

One email when pallet prices change or new inverters arrive.