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Bancolombia – Cartegena branch


Reduce the energy consumption of your air-conditioning and  refrigeration without affecting the output you need. Our  technology is maintenance free and can be easily installed by our  qualified engineers with no disruption to your operation. You can  expect up to 40% energy saving on your  

air-conditioning and up to 30% on your refrigeration. 

We keep your people, equipment and produce cool, and your  energy budget from overheating 


Bancolombia is a full-service financial institution that provides a  range of financial products and services to a diversified individual  and corporate customer base throughout Colombia, as well as in  other jurisdictions, such as Panama, El Salvador, Puerto Rico, the  Cayman Islands, Peru, and Guatemala.


The purpose of the trial was ‘proof of concept’ pilot study to  prove the benefit of installing COOLNOMIX our unique patented  intelligent thermostat on reducing the energy consumption,  costs, and carbon emissions of the air-conditioning.  

Emissis and exclusive partner Clear Energy carried out a 46.5- day trial on three air-conditioning units at the Cartegena branch,  Colombia. 


On the 06/04/2021 three COOLNOMIX units were installed  and connected to three internal Trane air-conditioning units,  each with two compressors forcing cooled air through each air  handling duct. 

To measure the energy consumed by the air-conditioning an MID  smart meter, with remote connectivity, was connected to the  external condenser. 

COOLNOMIX units were installed on air-conditioning units No.  1, No. 2, and No. 3. A kWh meter was installed to monitor the  consumption during the trial. No. 1 and No. 2 air-conditioning  units were very erratic due to the branch occupancy at the end  of April onwards, but No. 3 air-conditioning unit continued to  

operate normally for 24-hours a day, as it cools the ATM area.  

Data recording commenced on the 06/04/2021 with COOLNOMIX  active (ON) until 28/04/21 and then COOLNOMIX was inactive  (OFF) until the trial was completed on 23/05/21. 

During the trial, the metered half-hourly and 4-hourly data was  collected and analysed. No. 1, due to the erratic operation, was  analysed on a half-hourly basis. 



COOLNOMIX active (ON) reduced daily energy
consumption by 26% (see Figure 1), providing a
reduction of 60.7kWh per day.
This saving is based on the average daily
consumption of power with COOLNOMIX (ON) and
COOLNOMIX (OFF) over the period of the trial.


The calculated 60.7kWh daily saving with
COOLNOMIX (ON) equates to annual energy savings
of 22,155.5kWh (see Figure 2) which is equivalent to
a carbon emissions reduction of 11,077.75kg of CO2

The annual savings were calculated on average
daily consumption showing:

COOLNOMIX (ON) daily consumption averages 173.1kWh
COOLNOMIX (OFF) daily consumption averages 233.8kWh

COOLNOMIX will reduce your carbon emissions by
11,077.75kg of CO2 per annum, per branch


The trial test accurately proves the daily energy savings with COOLNOMIX, allowing us to predict the annual carbon emissions reduction and the energy savings plus the financial benefit. We have based cost savings on the trial site’s electricity supply cost of €0.12 per kWh (excluding any regional climate  change taxes). 

The COOLNOMIX trial delivered a 26% energy reduction in electricity consumption; annually this equates to a reduction, per branch: 

  • 22,155.5kWh 
  • 11,077.75kg of CO2 
  • Cost Savings of €2,658.66 

Across an estimated 800 Bancolombia branches COOLNOMIX will see an annual benefit as shown in  figure 3. 

  • 17,724,400kWh 
  • 8,862,200 kg CO2 
  • €2,126,928 
  • Rapid return-on-investment

Expected annual benefit across 800 branches over 1 year


COOLNOMIX clearly shows that significant energy, carbon, and financial savings can be achieved, and  it is highly likely that due to the climate in Colombia; these savings will be available throughout the  Bancolombia branch network. A full roll-out across the portfolio would also offer a significant long-term  benefit.  

Over 10 years Bancolombia will achieve: 

CO2 reduction Electricity reduction 

88,622tn 177,24GWh