For a recent project proposal in Western Europe, Cotes made an analysis of the cost and carbon emissions savings you could achieve for a battery dry room in western Europe IF you chose to use Cotes Exergic Technology instead of conventional gas-, and electric-only solutions.

Battery dry room using Cotes Exergic technology

Exergic Technology Concept Illustration-minWith the Cotes Exergic Technology, you can utilize a combination of sustainable energy sources to achieve considerable energy cost savings and large carbon footprint reductions in your battery dry room. All you need for Cotes Exergic Technology to work is hot water heated by a sustainable energy source. 

We break down the energy cost and CO₂ savings you can make using the Cotes Exergic Technology.

NOTE: These calculations below may differ depending on your local energy costs and available sources of energy. For a more detailed analysis of your battery dry room please consult the Cotes team for a custom calculation. or try the flee online CO2 reduction calculator.

The calculations below use conventional gas as the baseline index of 100 and energy prices at the time of calculation are listed below.

A Battery Dry Room in Western Europe Cost of energy CO2 Cost Index CO2 Index
  EUR/yr tonnes/yr  
Conventional non-Cotes gas and electric installations
Conventional, gas 2.265.381 8.467 100% 100%
Conventional, electricity 5.059.288 2.829 223% 33%
Cotes Exergic Technology using a combination of sustainable energy sources
Exergic, Waste Heat, electric boost 776.841 464 34% 5%
Exergic, solar heat, electric boost 2.124.900 1.196 94% 14%
Exergic, heat pump, electric boost 2.089.344 1.134 92% 13%
Exergic, gas** 1.863.583 6.866 82% 81%


**Cotes does not recommend or consider gas as a source of sustainable energy due to the environmental footprint. We recommend utilizing energy for the hot water from sustainable or “green” energy sources instead. However, if gas is a requirement, the hot water can come from a central gas boiler. 

From a EURO cent per kWh perspective, if you have an available waste heat energy source that you could utilize, like the baking process of Li-ion battery cells, then you essentially have a "free" energy source that would otherwise have gone to waste. You save energy costs and reduce carbon emissions at the same time.

Furthermore, because the Cotes Exergic technology runs optimal conditions on low-temperature margins of 80-90°C compared to the closest competitors' solutions that run optimal conditions at 140-180°C, energy consumption is lower and safety margins are better at lower temperatures.

Calculate your battery dry room CO2 emissions


Client's Local Energy Prices (Aug 2021) EUR Cent/kWh
Electricity Price 10,50
Gas Price 3,40
Cooling Price 1,67
Exergic, Waste, electric boost 0,00
Exergic, solar heat, electric boost 4,20
Exergic, heat pump, electric boos 4,63
Exergic, gas** 3,40


CO2 kg/kWh
CO2 kg/kWh Electricity 0,06
CO2 kg/kWh Gas 0,20
CO2 Cooling 0,01
CO2 Exergic, Waste 0,00
CO2 Exergic, solar heat 0,02
CO2 Exergic, heat pump 0,03
CO2 Exergic, gas** 0,20


Compare other European countries and their electricity and gas prices below. Prices are from the first half 2021 and could vary from current energy prices.



Calculate your battery dry room CO2 emissions