Corrections and questions
If a figure here does not survive checking, we want to know. Corrections are made with a note saying what changed.
Send a message
Corrections and enquiries are handled by Nikko Salamanca. Contact: use the form on this page.
Worth writing about
- A number on this site that disagrees with its stated source.
- A state incentive programme that has closed, changed, or is missing.
- A methodology assumption you think is wrong, and why.
- A utility export rule we should be applying and are not.
Things to ask someone else
We cannot quote you, design a system, tell you whether a particular installer is any good, or advise on your tax position. We do not have your roof, your utility tariff or your return in front of us, and pretending otherwise would be worse than useless.
We do not ask for your phone number, we do not run a quote form, and we do not sell your details to installers. If you want quotes, you will leave this site and give your details to the company that will call you.
For your own numbers, the calculator is the honest version of what this site can tell you.