ThermoVolt stores electricity as heat in locally manufactured refractory ceramics — from 12 kWh residential geysers to multi-MWh industrial process-heat batteries.
Most energy storage debate focuses on electricity. But 50% of global final energy demand is heat — and heat is far cheaper to store than electrons. ThermoVolt stores electricity as heat in dense refractory ceramics, releasing it on demand as hot air, hot water or steam. No electrochemical degradation. No fire risk. No imported minerals.
ThermoVolt stores electricity as heat with near-100% electricity-to-heat conversion in the heating elements (resistive). The source doesn't matter — what matters is charging when electricity is abundant and releasing heat when it is needed. No inverter is required for the heating elements, and there is no electrochemical capacity fade in the ceramic core.
ThermoVolt is built on two distinct ceramic technologies — each chosen for its specific role, both sourced and manufactured entirely within Pakistan.
Aluminium comprises ~8% of Earth's crust, mostly as aluminium-bearing minerals that support alumina-based refractories. For storage, alumina wins on the physics of scale: high density combined with high solid heat capacity delivers strong energy density in a simple, durable material that is abundant and geopolitically de-risked.
Dense refractory bricks from Abbottabad alumina. Stores heat at up to 1,050°C with no degradation over thousands of cycles.
Custom-engineered ceramic for valve boxes, downcomers and hot-air management — replacing Inconel superalloys with locally manufactured ceramics.
Both material families are local, affordable, proven in kilns and furnaces for centuries, and recyclable at end of life.
Beta V5 field trials running across Gujranwala, Haripur and Islamabad. 12 household units monitoring thermal mass temperature, water temperature, solar surplus capture and grid interaction in real time — with 4G telemetry and GPS logging.
No flammable electrolyte. No pressurised gas. No fire risk. ThermoVolt operates at atmospheric pressure with inert ceramic materials. The heating elements are the only wear component — designed for replacement without specialist tools.
The ThermoVolt controller monitors household electricity, PV output, and grid tariffs in real time — routing surplus energy into the thermal battery at precisely the moments when it would otherwise be wasted or cheapest.
As Pakistan's grid moves toward 60% renewables by 2030, dynamic tariffs will make this intelligence increasingly valuable. The controller is the bridge between Pakistan's evolving electricity market and the thermal battery at its core.
Every product shares the same alumina refractory core, manufactured on the same line at Ismail Ceramics. Starting with residential, proving the technology, scaling upward.
Pakistan is in the midst of an unplanned solar revolution — 18 million rooftop systems installed not because of incentives, but because grid electricity became unaffordable. Renewables now supply 53% of electricity, with a target of 60% by 2030.
The result is a massive, stranded solar asset and an emerging dynamic tariff environment. Meanwhile, households and SMEs continue burning imported LPG and gas for water heating and cooking — the dominant energy end-uses.
When the end use is heat, the optimal storage medium is heat. Pakistan doesn't need lithium, cobalt, or nickel. It needs clay, alumina, and wire — all domestic, all affordable, all available now.
Global thermal storage leaders target utility-scale plants in developed markets. iTerra targets the segment nobody else is designing for: Pakistan's 18 million solar households and hundreds of thousands of SMEs.
| Company | Scale | Temperature | Target Market | Manufacturing |
|---|---|---|---|---|
| Rondo Energy | 10–100+ MWh | ~1,200°C | US/EU heavy industry | US factory |
| Antora Energy | 10–100+ MWh | 1,500–2,400°C | US industry + grid | US factory |
| MGA Thermal | 5–100+ MWh | ~650°C | AU/EU power stations | Australia |
| iTerra ThermoVolt | 12 kWh – 10 MWh | 1,000°C | Pakistan SMEs & households | Gujranwala, Pakistan |
Appropriate technology must be manufactured where it is deployed — using local materials, local skills, and local industry.
info@iterra-thermovolt.com · Dr. Reto Stocker
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