DATA CENTER COOLING & POWER
TECHNOLOGY
Turning Heat Into 24/7 Zero-Water Cooling
Soltair's platform runs on two heat sources — high-temperature solar heat from our panels, and the data center's own recovered waste heat — and turns both into cooling and power, day and night, without consuming water or drawing grid electricity for cooling.
How Soltair Works
We combine solar thermal collection, waste heat recovery, and simple thermal storage to deliver continuous cooling—24/7, 365 days a year.
ZERO WATER.
ZERO COMPROMISE
100% waterless cooling. Every drop saved
1. SOLAR THERMAL COLLECTION
High-efficiency solar thermal panels capture the sun’s energy.
2. WASTE HEAT RECOVERY
Waste heat from data centers and equipment is captured and reused.
3. THERMAL STORAGE
Heat is stored in our simple thermal storage system
4. TURBINE POWERED COOLING
Stored heat powers
a high-efficiency turbine to produce
zero-water cooling.
5. WATERLESS CONDENSING
Advanced air-cooled condenser rejects heat—zero water required
Our technology delivers measurable impact where it matters most
ERE
WASTE HEAT REUSE
LOWER GRID BURDEN
Reduces peak demand and supports a more
resilient grid
24/7 RELIABILITY
Continuous, mission-critical
cooling—day, night, and in every season
STRONG ECONOMICS
Lower operating
costs and faster ROI for lasting value and growth
BUILT FOR A BETTER FUTURE
ZERO WATER
100% waterless cooling conserves our most precious resource.
LOWER EMISSIONS
100% data center low temp waste
heat is used for cooling and power generation
Cleaner cooling for a healthier planet and a lower carbon future
SOLTAIR is reinventing cooling—powered by nature, engineered for tomorrow
THE FOUNDING PRINCIPLE
Jet engines have used turbines to drive compressors for over seventy years.
Soltair applies that proven principle
to cooling
This is not a new physics bet. A turbine spinning a compressor on a common shaft is one of the most validated machine architectures ever built — our founders spent their careers on it at Pratt & Whitney. Soltair's insight was to drive that turbine with stored solar heat instead of jet fuel, and point the compressor at a cooling load instead of a fan. Heat in, cooling out, no electricity in between.
Jet Engine
Fuel combusts → hot gas spins turbine → turbine drives compressor
Soltair
Solar + recovered heat → vapor spins turbine → turbine drives cooling compressor and generator
Result
Cooling produced directly from heat — no grid electricity in the loop
NASA-licensed aerogel insulation — among the best thermal insulators known — in active development with NASA Glenn Research Center
A Solar thermal solution developed with NASA Glenn
The Soltair Ultra Material
High-temperature output that conventional flat-plate collectors can't reach — the temperatures turbomachinery needs
Lightweight, flat, and rooftop-ready — installs like solar PV without electrical lines, performs like concentrating thermal with fluid
Patent-pending, designed for American manufacturing
INVESTOR TAKEAWAY - Why 24-Hour Lithium Gets Expensive
Thermal storage enables
profitable 24/7 solar cooling and power
Soltair turns low-cost thermal media into a durable 30-year storage asset that avoids the high capex, degradation, and replacement profile of long-duration lithium.
Lithium pricing changes with duration
Standard battery quotes are typically for 2–4 hour systems. For 24-hour coverage, battery capacity and balance-of-plant costs multiply rapidly.
1 MW / 24-hour thermal battery: ~$2.76M
Approximately $111/kWh
No battery replacement at year 12–15
15–38×
LOWER LCC
No cycle limit on thermal media
Zero annual capacity fade
Thermal storage is a 30+ year asset with no electrochemical degradation. Lithium batteries require replacement, and costs compound over the project life.
The Hidden Cost: Battery Duration Premium
Long-duration batteries carry premium pricing from oversized energy capacity, thermal management, BOP, interconnection, and limited vendor competition
Thermal Storage 84–92% lower vs. lithium benchmarks
24 hour Storage
The sun sets. The cooling doesn't
THERMAL STORAGE AND OPERATING MODES
Thermal, Not Chemical
Storage is the business model.
Soltair banks heat in a stratified thermocline tank — 185°C at the top, 80°C at the bottom, with stratification preserved by design. That 105°C working range is what lets stored sunlight drive turbomachinery hours after sunset, turning a daytime resource into mission-critical, 24/7 cooling infrastructure.
It's deliberately boring technology — and that's the point. Thermocline storage is proven physics built from commodity materials, with no lithium, no rare minerals, and no exotic supply chain. There is no degradation curve, so there's no battery-replacement cycle buried in year ten of the financial model. There's no fire-suppression system, which means no thermal-runaway risk, simpler permitting, and lower insurance burden. The tank's cost per kilowatt-hour stored is a fraction of electrochemical storage — and it's the line item that never comes back to bite the project economics.
For a data center, the difference is categorical: without storage, solar cooling is a daytime supplement; with it, Soltair is the cooling system. That's what makes Cooling-as-a-Service contracts bankable around the clock.
One Product - Three Modes
1 - 1MW Cooling +75KW
Full cooling
1 MW of continuous cooling plus 75kW net and onboard power generation — enough to run the condenser fans, so the cooling mode powers its own parasitics. No grid draw, including the condenser fans/pumps.
2 - 130 KW Power
Full power
130 kW of electrical generation, plus 40 kW of onboard generation driving the condenser fans — full power output with self-powered heat rejection.
3 - Cogeneration
Cogeneration
500 kW of cooling, 85kW of net power generation, and 40 kW of onboard condenser-fan power simultaneously — the system flexes to the facility's load.
COMPARED
What changes versus conventional cooling
CONVENTIONAL CHILLERS & TOWERS
SOLTAIR PLATFORM
Water use
Millions of gallons per year evaporated
Zero — air-cooled, waterless
Grid electricity for cooling
~40% of facility energy cost
None — heat-driven cycle
Server waste heat
Rejected to atmosphere
Recovered into the cycle
Refrigerant
High-GWP refrigerants common
GWP-2 refrigerant — near-zero climate impact
Night & cloud operation
—
24-hour thermal storage
GO DEEPER
Engineering questions welcome
We're happy to walk technical teams through the cycle, the panel, and the storage architecture in detail.
1 MW Continuous Cooling • COP 6.0 • Zero Water • 24/7 Operation
Focus on:
✓ Compressor min COP 6.0 (your competitive advantage!)
✓ Zero water usage (environmental benefit)
✓ 24/7 operation (thermal storage)
✓ Scalability & modular design
✓ Sustainability