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Case studies

Lead-generation website

Sunpeak Energy Solutions

A marketing and lead-generation website for a fictional Kenyan solar company, built to earn trust without a single invented claim.

Industry
Solar energy
Year
2026
Services
Web design, Next.js development, Savings calculator, Lead forms
Stack
Next.js 16, TypeScript, Tailwind CSS, Vercel
Live site
Visit
Sunpeak Energy Solutions main screen

The challenge

Sunpeak sells rooftop solar, battery storage, backup power and solar water heating to homeowners and businesses in Kenya. The site had to explain those options to non-technical visitors and turn interest into consultation requests, while feeling premium and technical rather than like a generic green-energy template.

Because Sunpeak is fictional, there was a firm rule: no invented proof. No fake reviews, client logos, certifications, installation counts or savings claims. Most solar sites lean on exactly those things, so this one had to build trust through clarity instead.

The approach

Every primary page opens on a full-bleed photographic header, backed by a small image system: per-photo focal points, header-specific framing and one shared header component, so 16 different photos all crop well at every size.

The savings calculator keeps its formulas in a separate, unit-tested module. A "Show the working" panel puts the visitor's own figures into each formula, and when the inputs can't produce an honest payback period, it says so instead of showing a misleading number.

The quote and contact forms validate in the browser and again on the server, accept Kenyan phone formats, and post to a webhook or CRM. With no webhook configured they run in a clearly labelled demo mode, and nothing is presented as sent.

The savings calculator, with its working shown
The savings calculator, with its working shown
A solution page with a photographic header
A solution page with a photographic header
The filterable project portfolio
The filterable project portfolio

The result

Prerendered pages, plus a 404
24
Unit tests on the calculator and form logic
26
Automated browser checks, run against the live site
~30

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