From 0 to 30 Leads Per Day With an Interactive Solar Calculator Funnel

Background

Eltex is a fast-growing solar energy company serving residential and commercial customers across Europe.

They sell and install:

• Solar panel systems
• Battery storage systems
• EV charging stations

Within just two years of operation, the company expanded into multiple markets and continued scaling its installation capacity.

While their outbound call center generated a steady stream of leads, their website was not producing a meaningful volume of leads.

Challenge

The Eltex call center was performing well for generating leads, but their website traffic was underperforming.

Demand for solar energy was increasing rapidly due to rising energy costs and government incentives. Eltex invested in paid ads to capitalize on this demand.

The investment in ads drove more traffic to their website. But despite the increase in visitors, their website conversion performance remained low.

The core problems:

• Static content could not clearly communicate system sizing or ROI.
• Website visitors could not get immediate answers.
• Lead capture relied on basic forms without qualification.
• Paid traffic was not producing a proportional return.

Eltex concluded that their solar lead generation funnel was underperforming, not their traffic strategy.

They needed a structured way to:

• Educate prospects
• Provide tangible value
• Capture qualified contact information
• Improve PPC efficiency

Solution

Eltex implemented an interactive solar calculator using ConvertSite.

Instead of relying on static pages to explain system benefits, they created a dynamic lead generation funnel that:

• Asks structured qualification questions
• Calculates system size and potential savings
• Delivers personalized results
• Captures contact details before revealing outputs

This shifted the website experience from passive reading to active participation.

How the solar calculator funnel works

Most solar buyers want clarity on three core questions:

1. What system do I need?
2. How much will it cost?
3. How much will I save?

Eltex’s calculator guides users through inputs such as:

• Roof type
• Average electricity bill
• Electrical requirements
• Desired warranty length
• Age of property

Instead of showing the results immediately on screen, users are prompted to submit their contact information to receive personalized results via email.

This structure accomplishes two things:

• It maximizes lead capture.
• It filters high-intent prospects.

Prospects who complete the form and submit contact details are already engaged and solution-aware.

Why ConvertSite enabled this shift

Eltex selected ConvertSite because it allowed them to build a calculation-driven solar lead generation funnel without custom development.

Key capabilities used:

• Advanced conditional logic
• Custom formulas for ROI and system sizing
• Email-gated result delivery
• CRM and spreadsheet integrations
• Zapier automation

ConvertSite allowed the marketing team to incorporate real business logic directly into the calculator, turning it into both an education tool and a qualification mechanism.

Results

After launching the interactive solar sales funnel, results were immediate and measurable.

30 qualified leads per day

Eltex now generates approximately 30 online leads daily through their website calculator funnel.

Over 1,000 leads per month

The calculator consistently delivers over 1,000 new leads per month.

2,000–5,000 monthly interactions

Thousands of visitors actively engage with the calculator each month, providing valuable interaction data.

Improved PPC efficiency

Higher conversion rates allowed the marketing team to increase ad spend while maintaining a stronger return on ad spend.

Surpassed call center performance

The automated online funnel started generating more leads than Eltex’s outbound call center. Digital solar lead generation became a primary growth engine.

Lead qualification and data intelligence

Beyond lead volume, the calculator provided deeper insights into their customers. Analyzing form interactions helps Eltex identify:

• Average system demand
• Common budget ranges
• Interest in warranties and add-ons

This enables more personalized follow-up from sales teams and improves closing efficiency.

Because results are delivered by email, Eltex opens communication channels early in the buying journey. Even if prospects do not convert immediately, they can be nurtured through CRM workflows.

Expanding the funnel

After early success, Eltex launched additional calculators and temporary promotional funnels across its marketing website.

Interactive funnels now support:

• Seasonal promotions
• Special offers
• Regional campaigns
• Targeted PPC landing pages

Each funnel is structured to maximize engagement and capture qualified leads before revealing results.

Why This Matters for Solar Installation Companies

Solar buyers need clarity before committing. But static pages rarely provide:

• Personalized ROI estimates
• Instant system sizing
• Immediate cost projections

Interactive calculator funnels replace generic marketing content with tangible, data-driven value. For solar companies running paid ads, improving the conversion rate directly impacts profitability.

Instead of sending traffic to static pages, directing it to a structured calculator funnel can:

• Increase engagement
• Improve lead qualification
• Reduce sales friction
• Strengthen ROAS

Building Your Own Solar Calculator Funnel

If your website traffic is not converting into qualified solar leads, an interactive calculator can change your funnel performance.

ConvertSite allows solar companies to:

• Build custom ROI and savings calculators
• Gate results behind contact submission
• Integrate with CRM and automation tools
• Launch optimized PPC landing funnels
• Scale lead generation without increasing manual workload

Start your free plan today (no credit card needed) and build your own solar lead generation calculator with ConvertSite. To make getting started easier, we have a collection of custom templates, including solar power calculators.