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Win the job with a proposal that looks like an engineering firm made it.

Wattonomy Pro turns your off-grid, marine or van design into a client-ready proposal in minutes — your logo, a clean wiring diagram, a sized parts list, e-sign and a deposit request. Stop losing evenings to spreadsheets and hand-drawn diagrams.

One closed job pays for a year of Pro · month-to-month · cancel anytime
Sized to ABYC / ISO / BS / AS-NZS
Branded client proposals
From $29/mo · no contract

The quote that used to cost you an evening

Without Wattonomy

Size the bank on a spreadsheet, draw the wiring by hand, paste it into a Word doc, second-guess the fuse, chase the client for a signature. Hours per quote — and it still looks homemade.

With Wattonomy Pro

Enter the loads, get a validated design, and export a branded proposal with the wiring diagram, sized parts list and build pack — e-sign and deposit included. Minutes, and it looks like a firm built it.

Does it pay for itself? Do the math.

Pro is $29/mo for the Installer plan. Put in your own numbers:

Estimates only — hours-saved assumes Wattonomy gets you to a client-ready proposal in about 15 minutes. Your numbers will vary.

What your client gets — and why you win more

A proposal that closes

Your logo, pricing and markup on a clean, professional document. Proposal software lifts close rates because it looks credible and is easy to say yes to.

Engineer-grade credibility

Every cable, fuse and AIC sized to ABYC E-11, ISO 13297, BS 7671 or AS/NZS — numbers that hold up to a surveyor, inspector or insurer.

Get paid faster

e-sign, accept and a deposit request built into every quote — turn a yes into a booked, deposited job on the spot.

Built for your systems

Off-grid, marine, van and RV DC systems — batteries, inverters, DC-DC, 12/24/48V — not grid-tied rooftop PV bolted on.

Pricing that pays for itself in one job

Full deliverables on every Pro tier — you climb on seats and team workflow, not on what you can hand a client. Unlimited branded proposals throughout.

Installer
For the solo installer
$29/mo
1 seat · unlimited proposals

Everything you need to design and quote your own jobs.

  • Unlimited branded client proposals
  • Full build pack: wiring diagram, sized parts list, torque + commissioning
  • e-sign, accept & deposit request on every quote
  • Your logo, license & markup on every page
  • Sized to ABYC E-11 / ISO 13297 / BS 7671 / AS-NZS
  • 7 client-facing languages
Start free
Most popular
Studio
For the growing shop
$59/mo
3 seats · unlimited proposals

Everything in Installer, plus a team and a pipeline.

  • Up to 3 seats
  • Jobs pipeline: lead → quoted → won → built
  • Proposal revision history
  • Good / better / best options on quotes
Start free
Shop
For the multi-crew business
$129/mo
Unlimited seats · unlimited proposals

Everything in Studio, plus unlimited seats and dealer controls.

  • Unlimited seats
  • Dealer / multi-location controls
  • Integrations
  • Priority support
Start free

Start free with a 14-day, no-card Pro trial. Billed monthly, cancel anytime. Full pricing & comparison › · Just building your own? Use the free designer.

Questions

How is this different from other solar software?

Most solar tools design grid-tied rooftop systems. Wattonomy is built for off-grid, marine, van/RV and small DC solar systems — battery banks, inverters, DC-DC, fusing and wiring sized to ABYC E-11 / ISO 13297 / BS 7671 — and it turns that design into a branded client proposal.

Do I need a card to try it?

No. Start free and create a full branded client proposal on the 14-day Pro trial with no card. Keep designing on Free afterwards, or upgrade when it pays for itself.

What do I actually hand the client?

A professional proposal with your logo and pricing, a clean wiring diagram, a sized parts list, and a build pack — plus e-sign, accept and a deposit request.

Is there a contract?

No. Pro is month-to-month, cancel anytime. No demo, no lock-in.

Can my whole team use it?

Studio includes 3 seats and a shared jobs pipeline; Shop is unlimited seats with dealer controls.

Start free — no card

A client-ready proposal in minutes. No contract, cancel anytime.