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From Spoiled Food to Engineering Smart Cooling 

The Engineer Keeping Africa's Food Cold, One Connected Freezer at a Time.
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Smiling man in an orange safety vest stands in a workshop with electrical components in the background.
Abiola Ogundeji grew up watching unreliable power destroy his family's food. Today, as Koolboks' IoT Lead, he builds the solar-powered refrigeration keeping food fresh for thousands across Africa.

Despite being one of Africa’s largest economies, Nigeria continues to struggle with energy reliability. According to Nigeria’s National Bureau of Statistics, households experience an average of 6.7 electricity blackouts every week, with many outages lasting for hours at a time. Across the country, unstable power remains one of the biggest barriers to household resilience and small business growth. For others, it can mean losing an entire investment overnight. 

For Abiola Ogundeji, growing up in Oyo, southwestern Nigeria, it was a lesson he would never forget.

“My brother and I bought some chickens, and we put them inside our refrigerator. Not long after, because the power was unstable, we lost almost all of them. If that freezer had been solar-powered, it would have saved us that loss.”
Abiola Samuel Ogundeji

Looking back, he sees it as a defining moment, one that helped him understand the hidden cost of unreliable energy. It was not just about spoiled food. It was about lost income, wasted resources, and opportunities slipping away because critical infrastructure was absent.

Today, in the heart of Lagos, Abiola is helping ensure that others do not experience the same loss.

Working as the Internet of Things (IoT) Lead at Koolboks, a company dedicated to providing solar-powered refrigeration solutions to households and entrepreneurs across Africa. Abiola oversees the integration of cutting-edge technology into solar-powered refrigeration systems designed for underserved areas.

Using his training in Electronics and Electrical Engineering from Obafemi Awolowo University, he helps ensure that Koolboks refrigerators can be monitored, managed, and maintained remotely across the continent. The systems allow refrigeration units to communicate with cloud-based platforms, enabling smarter monitoring, improved performance, and innovative payment solutions.

One of the technologies he supports is Koolboks’ Pay-As-You-Go model, which allows customers to access refrigeration without paying the full upfront cost. Instead, users make manageable payments over time, opening the door for entrepreneurs and families who would otherwise be excluded from owning refrigeration equipment.

His work is not just about technology; it’s about transforming lives and fostering economic independence.

““Working here has exposed me to how renewable energy can be used to solve problems in Africa,” he shares. “It’s about alleviating poverty and creating opportunities for our people.”
Abiola Samuel Ogundeji

That impact extends into technical assistance supported by Entrepreneurial Solutions Partners. Koolboks has strengthened its ability to measure the environmental and social impact of its solutions. The assignment included a comprehensive audit aimed at assessing greenhouse gas (GHG) emission reductions and defining the critical requirements for registering carbon credits in line with international standards. Impact studies have shown how solar-powered refrigeration can improve food security, stabilise incomes, and reduce dependence on fossil-fuel-powered alternatives. The work is also laying the foundation for future carbon-credit opportunities, creating a pathway for even greater scale and sustainability.

Yet for Abiola, the most meaningful impact remains human.

It is the market vendor who no longer loses stock because of power outages. The family that can safely store food for longer. The entrepreneur who can grow a business because refrigeration is finally reliable.

Warehouse interior with workers in orange safety vests at desks, boxes and equipment around, and a large safety poster on the wall.
The Koolboks team at their warehouse in Nigeria

Every device connected, every system improved, and every line of code written contributes to a future where access to cooling is not determined by access to the grid.

The irony is not lost on him.

The young man who once watched his family’s food spoil because of unreliable electricity is now helping build the technology that keeps food fresh for thousands of others.

And in doing so, he is proving that some of the most powerful innovations are born from problems experienced firsthand.

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Aruwa Capital Fund I × Mastercard Foundation Africa Growth Fund


​Aruwa Capital Management is a Lagos-based, female-founded and led growth equity and impact investment firm. As one of the few women-owned investment houses on the African continent, Aruwa focuses on investing in rapidly growing companies that either provide essential goods and services to the female economy or are founded/co-founded by women or have gender-diverse teams.

Africa Growth Fund

The Mastercard Foundation Africa Growth Fund is a $200 million Fund of Funds shifting who gets to invest, and who gets invested in, across Africa. We back African-owned and African-led investment vehicles through two levers: catalytic capital that strengthens their ability to invest, and strategic business development support that helps them and their portfolio businesses grow with confidence.