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Cool Box

Producing low-cost solar cooling for developing countries

April 2021
Gallery Cool Box 1
Gallery Cool Box 1


The lack of cold chains (the sequence of measures needed to get food fresh and chilled from farm to fork) in many countries leads to large-scale loss of produce and quality, with significant impacts on rural and national incomes. Additionally, it makes food expensive in urban areas, which are becoming increasingly populous. 38% of food grown in Egypt and 48% of India's food suffer from this problem. The problem is the need for the food to be chilled on-farm as soon as it is harvested. This is difficult and expensive without mains electricity. Solar Polar's cooling modules don't need mains electricity to operate. The modules can operate both day and night due to a thermal energy storage component, have no moving parts, and provide cooling with zero carbon emissions, thus making enormous improvements to all concerned lives.

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Label Date April 9, 2021
From United Kingdom
Maturity stage Prototype testing in the real world
Looking For Network, New clients, Visibility, Funding, Partners, Credibility

The environmental benefits

  • Cooling without electricity - 100% reduction in CO2 emission cooling using solar over electrically driven alternative
  • No moving parts, little maintenance, a life in service of 30 years plus.
  • Uses only natural refrigerants, no greenhouse gasses
  • SP use a natural refrigerant and therefore avoids the use of hydrofluorocarbons (HFCs), which are powerful greenhouse gases, and of ozone-depleting chlorofluorocarbons (CFCs)
  • Reduction in food waste can give an Indian farmer a ten-fold increase in income and reduce greenhouse gas emissions from rotting food

The Financial benefits

  • Repayment time of 3 to 5 years dependent on the cost of electricity
  • Works in off-grid communities
  • Local manufacture brings jobs as well as cooling

Activity Region

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  • Headquarters
  • Activity

Company Profile

Solar Polar Limited

Solar Polar is bringing to market solar refrigeration and air-conditioning modules that requires no electricity,

View company profile Solution website
Headquarters Maxwell Rd, Peterborough PE2 7JN, UK

Networking Partner

Cambridge Cleantech

Cambridge Cleantech is a successful network organization that has, since 2011, brokered hundreds of key business collaborations in the cleantech industry.

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Solutions Associated 13
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Solar Polar Limited has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.