Tadweer Solutions turns construction waste into a natural cooling system — no water, no complex machinery, and a payback period of just over a year.Tadweer Solutions turns construction waste into a natural cooling system — no water, no complex machinery, and a payback period of just over a year.
Zero Water Consumption
1.2-Year Payback Period
100-Year System Lifespan
The Challenge
Maximizing Value, Exceeding Expectations | Growing Food in Extreme Heat Is Getting Harder
Greenhouse owners across Saudi Arabia face the same three problems every season. Solving one often makes the other two worse. Until now.Greenhouse owners across Saudi Arabia face the same three problems every season. Solving one often makes the other two worse. Until now.
Cooling Bills That Eat Your Profits
AC for a greenhouse costs tens of thousands of SAR every year — and prices keep rising with every hot season.
Evaporative Cooling Wastes Too Much Water
Evaporative systems consume up to 1.6 m³ of water per MWh of cooling — a serious cost in a water-scarce region.
Equipment That Breaks Down Too Soon
AC compressors last 15–20 years at best. Evaporative pads need constant replacement. Maintenance costs drain every season's profit.
How It Works
Waste Rocks That Cool Your Greenhouse — Day After Day
01/
Collect
Waste rocks from local construction and mining sites are sourced and delivered to your location at low or no cost.Waste rocks from local construction and mining sites are sourced and delivered to your location at low or no cost.
02/
Store
At night, fans push cool desert air through the rock pile, charging it with cold thermal energy.At night, fans push cool desert air through the rock pile, charging it with cold thermal energy.
03/
Cool
During the day, hot outside air passes through the charged rocks and arrives 15–20°C cooler inside your greenhouse.During the day, hot outside air passes through the charged rocks and arrives 15–20°C cooler inside your greenhouse.
04/
Repeat
The cycle resets every 24 hours, automatically, with no water and minimal electricity.The cycle resets every 24 hours, automatically, with no water and minimal electricity.
Our Results
Proven in the Field. Ready to Scale.
Lower cooling cost vs AC
Cooling cost per MWh (USD)
Year system lifespan
Year payback period
Why It Wins
The Numbers Speak for Themselves
| Waste-to-Cooling Our Tech | Evaporative Cooling | Air Conditioning | |
|---|---|---|---|
| Cost per MWh | $6 – 10 | $20 – 40 | $35 – 50 |
| Water consumption | Zero | 1.6 m³/MWh | Zero |
| System lifespan | 100 years | 10 – 15 years | 15 – 20 years |
| CO₂ emissions (kg/MWh) | 5 – 15 | 80 – 120 | 450 – 700 |
| Maintenance | Low | Moderate | High |
| Energy storage | Yes — 24h cycle | No | No |
| Payback period | ~1.2 years | 3 – 5 years | 5 – 8 years |
Our Story
Born at KAUST. Built for Saudi Arabia.
Tadweer Solutions was founded by researchers at King Abdullah University of Science and Technology (KAUST). We saw two problems hiding in plain sight: greenhouses struggling to stay cool, and mountains of construction waste with nowhere to go. Our Waste-to-Cooling technology connects both — turning a liability into a low-cost, long-lasting cooling asset. Our pilot plant in Shaqra has proven the concept. 500 tons of waste rock. 200 m² of cooled greenhouse space. A payback of just over a year. Now we’re ready to scale.
- Expertise you can trust, results you'll love | 500 tons of waste rocks already deployed in our Shaqra pilot
- Maximizing value, exceeding expectations | Formally approved by Shaqra municipality — ready to scale
- Finding your perfect match in real estate | Backed by KAUST research with proven, real-world results
Our Team
Meet the People Behind the Technology
Prof. Hylke Beck
Dr. Julian David Hunt
MSc. Samer Almashharawi
Eng. Kamal Saleh Mosbah Msallati
MSc. Ahmed Almashharawi
Contact
Ready to Cool Smarter?
Whether you’re a greenhouse owner looking to cut cooling costs, an investor interested in our seed round, or simply want to learn more — we’d love to hear from you.