Sōlrein
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About us

We close the gap between what solar promises and what it delivers.

Sōlrein is a solar performance company.

We exist for a simple reason: solar rarely delivers what it promises. Systems are sold without honest analysis. Panels lose output to dust and heat from the first week. Faults go unnoticed for months. The gap between what solar could produce and what it actually produces is wide — and almost no one is working on it.

That gap is our entire business.

Dust settling on a solar panel over 30 days, and how much sunlight still reaches the cells beneath it.

Our story

From Clean Solar to Sōlrein.

Sōlrein began as Clean Solar, with one mission: keeping panels clean in one of the sunniest, and dustiest, places on earth.

We stepped away for a time. We came back with a wider view — that cleaning was only one piece of a larger problem, and that solving it properly meant working across the full life of a solar system: before the purchase, after the installation, and every day in between.

Clean Solar became Sōlrein. The mission became performance.

Clean Solar is now Sōlrein

See it for yourself

Dust doesn’t look like much. It costs a lot.

A real panel, photographed dusty and clean. Move your cursor across it to wipe the dust away.

Clean solar panel

What we run

Services & Products

Sōlconsult

Service

Sōlconsult is independent advisory for homeowners. Most solar decisions are made on a seller's numbers; we put honest analysis first — consumption, site, system options, real payback — so the decision is yours, made on evidence. The right system, bought well, outperforms the wrong one for twenty-five years.

Sōlcare

Service

Sōlcare looks after residential systems for the long run: monitoring performance, correcting faults, keeping panels clean. A solar system is a twenty-five-year asset that most owners check twice a year. Sōlcare closes that gap — because the difference between a maintained system and a neglected one, compounded over decades, is the difference between an investment and a disappointment.

Sōlrobo

Product

Sōlrobo is our automated cleaning robot for solar plants. At plant scale, dust is not a nuisance — it is a measurable loss of revenue, week after week. Sōlrobo keeps installed PV at peak output with consistency no manual crew can match, and without the water, cost, and risk that manual cleaning carries.

Sōlurban

Product

Sōlurban brings the same thinking to solar lighting. Street-scale solar fails quietly: hundreds of poles, none of them cleaned, all of them dimming. Sōlurban keeps all-in-one solar light poles performing between maintenance visits — extending cleaning cycles and cutting the cost of running solar at city scale.

Meet our founder

Hossam M. Mounir

Hossam M. Mounir is a Mechatronics Engineer specializing in solar plant performance after installation, from dust accumulation to module overheating. His work spans both research and industry: doctoral research at the German University in Cairo, and business development roles across the solar sector.

He founded Sōlrein to bring these two sides together — applying research on soiling and thermal losses to solutions that hold up in the field, not just in a study.

Education

PhD candidate, Mechatronics Engineering

German University in Cairo (GUC)

BSc & MSc, Mechatronics Engineering

German University in Cairo (GUC)

Industry

Regional Business Development Manager

Maxima MEA, part of Asunim Group

Business Development Manager (former)

Solis Depot, a HUAWEI Smart PV Value Added Partner

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Get in touch

Let’s talk about your solar system.

Contact us