Reducing Milk Spoilage through Solar Powered Milk Chilling

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Last modified by Simone Fehrenbach on 2015-07-21. This is a wiki so please feel free to update information by clicking on "Edit with form".

Project title

Reducing Milk Spoilage through Solar Powered Milk Chilling

Project country/region

☐ East Asia & Pacific
☐ Europe & Central Asia
☐ Latin America & The Carribean
☐ Middle East & North Africa
☐ North America
South Asia - India
☐ Sub-Saharan Africa

Project organisation

Promethean Power Systems

Project description


Promethean’s refrigeration solution uses a thermal energy battery pack that charges on solar power and/or a few hours of grid electricity. This provides cold storage around the clock despite inconsistent access to electricity. Dairy processors can collect raw milk from remote dairy farmers and keep it cold in a rapid milk cooler, reducing the time that milk is unchilled by 75 percent. Promethean will design and deploy the refrigeration systems in collaboration with India’s largest private dairy and one of India’s largest solar installers.


India is the largest producer and consumer of milk in the world. Increasing access to milk while decreasing bacteria and spoilage supports food security and consumer health in India, where 42 percent of children under the age of five are malnourished. This project will improve access to forward markets, higher income for the dairy farmers, and wealth creation through increase in herd size.


Promethean Power Systems designs and manufactures refrigeration systems coupled to their thermal batteries for agricultural commercial refrigeration applications in off-grid and partially electrified areas of developing countries. Promethean is working in partnership with the Hatsun Argo—India’s largest private dairy company, and Orb Energy—a leading solar energy system provider in India.

Promethean Power Systems participated successfully in the PAEGC Initiative ( and was with its project "Reducing Milk Spoilage through Solar Powered Milk Chilling' among the winners of 2013.

Project related to following sources of energy


☐ Biomass

☐ Biofuel

☐ Biogas

☐ Wind

☐ Geo-Thermal

☐ Hydro

☐ Energy Efficiency

☐ Other: /

Project primarily related to the following Commodity Groups

☐ Cereals

☐ Fruits and vegetables

☐ Nuts and berries

☐ Forage

Dairy products

☐ Meat products

☐ Oil Seeds

☐ Roots and Tubers

☐ Eggs

☐ Pulses

☐ Fiber Crops

☐ Forestry

☐ Sugars

☐ Stimulants

☐ Spices

☐ Other: /

Project primarily related to the following Agricultural Value Chain Steps

☐ Mechanization

☐ Efficiency of Operation


☐ Transportation

☐ Controlled Atmosphere

☐ Controlled Temperature

☐ Mechanical Sorting

☐ Preservation

☐ Other: /

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