Clean industrial heat, cheaper than gas.
Cut the cost of your process heat by around half and its carbon emissions to near zero, using the cheapest electricity hours on the grid. Lime|loop delivers the heat up to 900°C and captures the carbon from any gas you still burn, in a single cycle.
Why is industry still burning gas for heat?
Gas is cheapest today and live grid electricity at peak rates is uneconomic for 24/7 process heat. A heat battery is the only path to cheap, clean continuous heat — and Lime|loop is the only one that pays for itself through a second CO₂ revenue stream.
$25M/year in gas. $2.4M/year in carbon tax. Locked in.
Charge → Discharge → Capture
A closed thermochemical loop using proprietary synthetic lime (CaO ↔ CaCO₃) to store energy in chemical bonds.
Charge
Off-peak electricity calcines the Lime|loop sorbent — CaCO₃ becomes CaO, storing energy chemically at high density.
Discharge
Releases 700–900°C process heat on demand, around the clock — straight into your existing infrastructure.
Capture
The same cycle captures CO₂ from the gas you still burn — offset your ETS bill, or sell to an off-taker.
A 1.9-year payback at one German chemical plant.
Replacing 8.8 GWh/yr of gas heat. Without the CO₂ layer the payback is 3.7 years; with food-grade CO₂ sold to an off-taker at $200/t, it drops to 1.9 years.
- + Carbon tax exposure (EU ETS)
- + Volatile gas pricing
- + Geopolitical risk
- − CO₂ sales revenue
- − Off-peak arbitrage
- − Grid-independence buffer
Calculate your plant's potential
Based on 2025 spot-electricity prices across 28 European countries. Pick your country and your annual heat demand.
Proprietary synthetic lime.
Earth-abundant, patent granted.
Lime|loop uses a reversible CaO ↔ CaCO₃ cycle on a proprietary synthetic lime engineered for durability over thousands of charge–discharge cycles. Cheap inputs, dense energy storage, high-purity CO₂ output.
Explore the product →Raising to deliver our pilot demonstration.
Backed by Innovate UK grants. Active commercial pipeline across chemicals, cement and food. Patented sorbent and process.