Solar savings. Calculated.
A real-time solar calculator for Irish websites. SEAI grants, supplier rates, payback periods — embedded with one shortcode.
See it in action
A 60-second+ walkthrough of the calculator, supplier rates, lead capture, and branding options.
Video shows v1.0 — the plugin has since been updated with chart mode, 4 premium themes, and an improved calculation engine.
See it on a real site
This is a demo solar installer homepage with the compact calculator widget embedded in the sidebar. Your brand, your colours, your products.
The problem
Irish homeowners want to know how much solar will save them. They search "solar panels Ireland" and land on your site. If you can't show them a number — their number, based on their house, their supplier, their region — they leave.
Generic "save up to 70%" claims don't convert. A calculator that shows €1,138 per year with Electric Ireland in Leinster on a south-facing roof does.
Cogsmith Solar gives your visitors that number in seconds, then captures their details so you can follow up.
And when they're ready to talk, you need their details — not just a name, but what they calculated. Cogsmith Solar captures the full calculation with every lead so you can call back with a quote ready.
What it does
Real-time calculator
Premium chart mode
Leads with full calculation data
Irish supplier rates
SEAI grant calculation
Product recommendations
Your brand, your colours
Admin dashboard
Full settings control
4 premium themes
Pick a look that fits your site. One click in the admin — no code changes.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Real-time calculator | ✓ | ✓ |
| Panel slider, region, orientation, house type | ✓ | ✓ |
| Battery toggle | ✓ | ✓ |
| SEAI grant calculation | ✓ | ✓ |
| 9-tile results grid | ✓ | ✓ |
| Colour theming & logo | ✓ | ✓ |
| Full & compact shortcode modes | ✓ | ✓ |
| Chart mode (4 themes) | ✓ (with watermark) | ✓ |
| Real supplier rates | ✓ (read-only) | Editable + auto-update |
| Product recommendations | ✓ | Editable + unlimited |
| Lead capture | 3/month | Unlimited |
| Leads admin & CSV export | ✓ | ✓ |
| Email alerts with lead data | ✓ | ✓ |
| Analytics (calculations & leads) | ✓ | ✓ |
| Email support | ✗ | ✓ |
Pricing
- Full calculator with all inputs
- Real supplier rates (read-only)
- Lead capture (3/month)
- Chart mode with watermark
- SEAI grant calculation
- Product recommendations
- Colour theming
No license key required.
- Everything in Free, plus:
- Real Irish supplier rates
- Weekly auto-updated rates — we monitor suppliers so you don't have to
- Full product catalogue
- Lead capture with full calculation data & CSV export
- Email support
Free tier available forever.
By purchasing, your email is added to our customer list. We'll notify you of new versions and occasionally about new Cogsmith plugins. Unsubscribe any time.
One lead covers the cost. The average solar installation is worth €5,000+ to the installer. One extra conversion and this plugin has paid for itself.
Questions
How do I add the calculator to my site?
Install the plugin, activate it, and add [cogsmith-solar] to any page or post. For a sidebar version, use [cogsmith-solar mode="compact"].
Are the supplier rates accurate?
Pro subscribers get real Irish supplier rates that update automatically each week from our data feed. Free mode uses sample rates for demonstration purposes.
Can I customise the colours?
Yes. The settings page includes colour pickers for primary, secondary, and accent colours, plus a font family selector. The calculator inherits your choices via CSS custom properties.
How does the SEAI grant calculation work?
It follows the current SEAI Solar Electricity Grant structure: €2,100 for the first 2 kWp, €300 per additional kWp, capped at 4 kWp. You can adjust these values in the admin if the grant changes.
What data is stored when a lead submits the form?
Name, email, phone, consent status, plus all 11 calculation parameters — panels, region, supplier, orientation, house type, battery, annual savings, payback, system cost, SEAI grant, and kWh produced. Everything you need to quote without calling them back to ask.
Does it work with any WordPress theme?
Yes. The calculator is self-contained with scoped CSS. It renders inside a shortcode block and doesn't interfere with your theme styles. Tested with Twenty Twenty-Four, Astra, GeneratePress, and Flavor.
Ready to convert solar visitors into leads?
Download Free VersionFree tier available. Pro from €99/year.