Solar panels being cleaned on a roof

Solar panel cleaning and system upgrades

Dirty panels and old inverters quietly cut your production. We clean arrays, check performance, replace inverters, add panels and retrofit batteries so an existing system does what it should.

  • Free site assessment and quote
  • Engineer-designed systems
  • 10-year workmanship warranty

Cleaning and upgrades across the North Island

What's included

  • Panel cleaning for homes, farms and commercial arrays
  • Performance check against expected production
  • Inverter replacement and added panels
  • Battery retrofit to an existing system
  • Supply of panels, inverters and batteries for your own installer

Get back what your system should be making

Solar panels lose output as they get dirty. Dust from a farm track, bird droppings, moss along the lower edge, pollen and coastal salt all reduce the light that reaches the cells. On the monitoring data it shows up as a slow decline that most owners never notice.

We clean arrays on homes, farm sheds and commercial roofs across Hamilton, the Waikato and the wider North Island, and we compare production before and after so you can see the result.

Rooftop solar panels after cleaning

Upgrades for systems that have aged

Inverters typically have a shorter life than the panels above them. If yours is failing, undersized or lacks the features you now want (battery input, monitoring, EV charger control), we replace it with a current Sungrow, Sigenergy or Enphase unit. We also add panels where the roof and inverter have capacity, and retrofit Sigenergy, BYD, Sungrow or Tesla batteries.

Solar panels on a tiled roof

Supply only

For projects with their own installer, Solar Scope supplies panels, inverters and batteries from our preferred brands: Jinko Solar, LONGi, AIKO, JA Solar and Canadian Solar panels, with Sungrow, Sigenergy and Enphase inverters.

Clean solar panels under a clear sky

How the job runs

  1. Step 1 of 3

    Check the numbers

    Tell us what the system is producing and what it should be. Dust, moss, bird droppings and shading all show up in the data.

  2. Step 2 of 3

    Clean or upgrade

    A clean brings soiled panels back to spec. If the inverter is failing or the roof has room, we quote the upgrade.

  3. Step 3 of 3

    Verify

    We compare production before and after, so you can see the difference rather than take our word for it.

Cleaning and upgrades: common questions

How often should solar panels be cleaned?

Rain does some of the work, but arrays near farm tracks, yards, coastal salt or under trees soil faster. A check once a year and a clean when the data shows a drop is the usual pattern.

Does cleaning really make a difference?

On a soiled array, yes, and the production data shows it. On a clean array, no, which is why we look at the numbers first.

Can you upgrade my old solar system?

Yes. Inverter replacement, adding panels where the roof and inverter allow, and adding a battery are all upgrades we design and coordinate.

Do you supply equipment only?

Yes. We supply panels, inverters and batteries from our preferred brands for projects with their own installer.

Is cleaning safe for the panels and roof?

We use methods and equipment suited to the panel type and the roof, carried out by installers who work on solar every day.

Step 1 of 7

About a minute

What do you need done?

Tell us about the job

What's your name?

Best number to call you on?

We call or email to arrange the site visit.

Where can we reach you?

Your email, so we can send the price in writing.

Where's the job?

When do you need it?

Or pick a date:

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Request a free site assessment

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