Key metrics from Sunswap’s trial with Müller Milk & Ingredients

Our trial with Müller back in spring 2023 acts as a good barometer for Sunswap’s capability throughout the year, making use of cool, bright spring conditions to run completely on solar energy. Running independently of grid energy for consecutive low-temperature delivery cycles is a testament to the efficacy of the Endurance e-TRU and its integrated […]

Our trial with Müller back in spring 2023 acts as a good barometer for Sunswap’s capability throughout the year, making use of cool, bright spring conditions to run completely on solar energy.

Running independently of grid energy for consecutive low-temperature delivery cycles is a testament to the efficacy of the Endurance e-TRU and its integrated solar array, showing that there are real-world contexts where our technology can synthesise and store energy at a faster rate than an industrial fridge uses energy.

At Sunswap, we know it’s important to be informative and detailed in order to help customers make the switch to fully electric, so dive into the visuals below to get a better idea of the numbers from this trial.

If you’d like to find out more about switching to Sunswap for your refrigerated transport, contact us here.

Page 1 of the Muller Milk & Ingredients trial infographic.

Iconography; truck, thermostat, egg timer, battery.

Text as follows:

Sunswap trial with Muller Milk & Ingredients (as a logo)

Emission breakdown & projected savings


Fridge configuration:

Battery size: Medium 

Onboard charging speed: Standard  

Single temperature

Most demanding delivery cycle:

Battery level at close: 91%

24h of cooling time, with 5 deliveries.
3°C setpoint (chilled)
Page 2 of the of the Muller Milk & Ingredients trial (with Sunswap) infographic.

Energy saved from the trial:
56kg of tailpipe CO2 (carbon dioxide) emission
48kg of wider CO2 emission
500g of NOx (Nitrogen Oxides) emission
163g of  DPM (diesel particulate matter)

Energy used in the trial
100% solar energy (due to favourable spring conditions of cold air and strong sun, while carrying chilled produce rather than frozen)
Page 3 of the of the Muller Milk & Ingredients trial (with Sunswap) infographic.

Lifetime emission reduction per TRU, projected from trial data

CO2 (carbon dioxide): 

74 tonnes
of tailpipe emission reduction
(scope 1) 

64 tonnes
of overall emission reduction
 (scope 3)

NOx (Nitrogen Dioxides): 716kg

DPM (diesel particulate matter):  22kg


equivalent to...

...the CO2 emitted by 12 cars' annual average use

...the NOx emitted by 15 cars' annual average use

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