AI Invoicing App Builder for Solar Installers
An invoicing tool shaped like your solar installer: your services, your tax rate, your terms. Describe it once, then issue invoices from a page instead of a template file.
Who it's for
Solar installers invoicing from a word processor or a spreadsheet, and chasing payment from memory.
What you can build
- Clients with billing details and payment terms
- Invoices with line items for site surveys and panel installation, tax and totals
- A PDF you can download or email to the customer
- A paid / unpaid / overdue list with what is due this week
- Quotes that turn into an invoice once accepted
How solar installers work
A solar installer's job runs over weeks: an inquiry, a look at electricity bills and satellite imagery, a site survey of the roof and electrical panel, a system design and quote, any grid connection or permit paperwork, then a one- or two-day install with scaffolding, panels, inverter and often a battery. Spring and summer bring the most inquiries, and energy price rises cause sudden spikes. Installers juggle a quoting tool, spreadsheets, a shared calendar and supplier emails. Software helps by keeping each home's survey, design, paperwork and install date together.
What invoicing app for Solar Installers has to handle
- Invoices should follow staged payments, such as a deposit on signing, a payment on delivery and the balance on commissioning.
- Equipment, labor, scaffolding and any electrical upgrades need separate lines.
- Grants, incentives or financing arrangements, where applicable, should be recorded against the job.
- Tax treatment of solar and batteries varies by country, so rates should be configurable per line.
A tip for solar installers
Link each staged payment to a clear project event, such as materials delivered or system commissioned. Customers accept staged payments when they can see progress, and it protects you when you have already bought expensive panels and batteries.
A prompt to start from
Build an invoicing app for a solar installer. Keep a list of clients with customer name, address and system size. Create invoices with a number, date, due date, line items for site surveys, panel installation and battery storage, quantity, rate, tax and total. Generate a printable PDF, mark invoices paid or overdue, and show a dashboard of outstanding money. Add quotes that can be converted into an invoice, and store everything in a database.
Questions
Can invoices reflect incentives or special tax rates on solar?
The app can apply any rates and deductions you set per line. Check the rules that apply where you operate, as incentives and tax treatment change.
Can it produce a PDF?
Yes. Ask for a printable invoice and Mythex builds a clean PDF layout with your details, logo and numbering, which you can download or attach to an email.
Does it handle tax?
Say which tax applies and at what rate and it is calculated per line and shown in the total. If you bill in more than one currency, say that too.
Do I need to know how to code?
No. You describe what you want in plain language and Mythex writes the code, shows a live preview, and lets you change things by chatting. The code editor and terminal are there if you ever want them.
Do I have to explain my business every time?
No. Mythex remembers who you are and how you work across every project, and follows the standing notes you set for a project, so you are not re-briefing it in each new chat. You can read, edit or switch all of it off.
How much does it cost?
There is a Free plan with daily credits, enough to build and publish a first version. Pro is $25/month and adds full code editing, GitHub export, custom domains, and credit top-ups.
Templates to start from
- Mortgage Calculator Template — Live amortization with PMI
- Finance Dashboard Template — Board-ready finance reporting
- Fintech Payments Site Template — Tiered pricing, blog, animations
- Plumbing Business Site Template — Quote calculator with lead dashboard
- Invoice Generator Template — Canvas invoicing with PDF export
- Expense Claims App Template — Receipt uploads with policy checks
- Sales ROI Calculator Template — Three-scenario models and branded PDFs
- Commission Calculator Template — Tiered comp plans and quota attainment
Guide
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