In development · Founding member spots open

Find out if your solar system has been quietly losing you money

For owners of commercial-scale solar systems who installed, watched the first few bills drop, and never checked again.

Apply for founding access → See how it works

Founding members get early access and a locked-in founding price.

Yieldcheck Concept preview

System health check

Actual generation checked against what this system should be producing.

Download report
Expected yield (last 12mo)142 MWh
Actual yield (last 12mo)96 MWh
Estimated revenue lost$14,200
  • Jan–MarOutput 8% below expected
    Minor gap
  • Apr–JunOutput matched expected
    On track
  • Jul–SepOutput 41% below expected — pattern matches an inverter fault
    Underperforming
  • Oct–DecOutput 38% below expected
    Underperforming

Sound familiar?

What people are putting up with today

  • Most businesses install commercial solar, watch the first few bills drop, and move on — the system becomes an orphan nobody checks.

  • The Clean Energy Regulator's own inspections found 22% of small-scale systems fail to meet technical standards.

  • One business complained its solar system had not produced any electricity at all for over two years before anyone noticed.

How Yieldcheck works

Yieldcheck is a one-off performance health check for commercial-scale solar systems. Upload a year of generation data from the monitoring portal you already have, along with basic system details, and Yieldcheck compares what the system actually produced against what it should have, in plain numbers — so you know in minutes whether it's worth calling someone out, without committing to an ongoing monitoring contract.

  1. 01

    Export a year of generation data from the monitoring portal your system already has, plus basic details like size and location.

  2. 02

    Yieldcheck compares actual output against what the system should have produced for its size and location.

  3. 03

    Get a plain-language report: how much output and revenue has likely been lost, and whether it's worth calling someone out.

In their words

What people are saying

Real quotes from public reviews and forums, with names removed. None are about Yieldcheck — it isn't available yet.

Most businesses install commercial solar, watch the first few bills drop, and move on.
Solar asset management report
The customer complained ... the solar system had not produced solar electricity for the business from the time of installation and over two years.
Business owner, reported by The Fifth Estate
largely because they're not being checked. No fault alerts or monitoring and no scheduled maintenance.
Solar asset management report

Founding access

Apply for founding access

Yieldcheck is opening to a small group of founding members first.

  • Early access before public launch
  • A locked-in founding price
  • A direct say in what gets built

Yieldcheck is being built now. Founding members get access first and help shape it. Applying is free and there's no obligation to buy.

Privacy notice: we collect your email (and your answer above, if you give one) solely to contact you about founding access to Yieldcheck. We don't sell or share your information with third parties, and we won't use it for anything else. You can ask us to delete your details at any time by emailing hello@thinksimple.app.

Get involved

Want to be part of Yieldcheck?

Whether you'd invest, sell it or bring know-how from this industry, tell us how you'd like to be involved. We review every message and reply if there's a fit.