energy

Kenyan company Sun King calls itself “the world’s largest off-grid solar energy company.” That’s not just marketing hyperbole—and it’s a statement that reveals how the energy landscape has shifted beneath our feet. The company’s recent $156 million securitisation (meaning sale of their existing revenue streams), the largest of its kind in Africa, isn’t just another funding round. It’s a watershed moment that signals the off-grid solar industry has finally matured from a niche development sector into a legitimate financial asset class that commercial banks are willing to bet serious money on.

But here’s what makes this story truly compelling: Sun King’s claim to being the world’s largest isn’t based on the usual Silicon Valley metrics of valuation or venture capital raised. Instead, it’s built on something more meaningful—actual impact at scale. With over 27 million solar products sold, 23 million homes powered, and $1.3 billion in solar loans extended to nearly 10 million customers across 46 countries, Sun King has quietly assembled the largest customer base in the off-grid energy sector while most of us were still debating whether distributed solar could ever be commercially viable.

 For the first time, commercial banks are treating off-grid solar as a mainstream financial asset rather than a development experiment. This legitimisation opens doors to capital pools that dwarf traditional development finance, creating the potential for unprecedented scale in clean energy deployment.

The timing of this funding is significant. As the world grapples with energy security, climate change, and the persistent challenge of providing electricity to 1.8 billion people who still lack reliable access, Sun King’s securitisation proves that market-based solutions can scale to meet these challenges—if we’re willing to think differently about how energy systems work.

Off-grid solar companies lacks the standardised metrics that financial analysts need to define leadership in traditional energy markets. Unlike utility-scale solar where gigawatts of installed capacity provide clear rankings, or residential solar where revenue figures tell the story, off-grid solar operates in a more complex ecosystem where success must be measured across multiple dimensions.

Sun King’s claim to the crown rests on several metrics. First, customer reach: with nearly 10 million individual customers served, Sun King has built a customer base that dwarfs its closest competitors [1]. For context, d.light, another major player founded the same year as Sun King’s predecessor Greenlight Planet, reports revenue of approximately $217-309 million annually but serves significantly fewer customers [2]. M-KOPA, the Kenyan fintech-solar hybrid, boasts higher reported revenue at $618.8 million but operates primarily in East Africa with a more limited geographic footprint [3].

What’s particularly striking is Sun King’s product volume: over 27 million solar products sold represents a scale of manufacturing and distribution that few companies in any sector achieve, let alone in the challenging off-grid markets of Africa and Asia. This isn’t just about bragging rights—it demonstrates something crucial about the company’s operational capabilities and market penetration …