Solar is no longer a story about whether growth will happen. It’s a story about where, how fast, and who’s positioned to capture it. Over the next decade, the biggest gains won’t come from the markets that are already saturated , they’ll come from the regions still closing the electricity access gap. That’s exactly where Green Mwangaza sits.
Here’s what the next ten years actually look like, and what it means for how we build.

1. Off-grid solar is entering its highest-growth decade yet
   Global off-grid capacity is projected to more than double by the early 2030s, with sub-Saharan Africa driving a disproportionate share of that growth. Analysts expect the Middle East and Africa region to post annual growth rates above 25% through 2031 , far outpacing the global average. This isn’t a niche trend; it’s the market catching up to a simple fact: grid extension is often the least economical way to reach dispersed rural populations, and decentralized solar has become the default answer instead.
   What this means: demand isn’t the constraint anymore. Execution capacity is. The companies that win this decade will be the ones that can deploy reliably at scale, not just the ones with the best technology on paper.
2. Batteries get cheaper, systems get bigger
   Lithium-ion is steadily displacing lead-acid across off-grid systems, and battery costs are expected to keep falling year over year through the next decade. That’s shifting what a “standard” solar home system looks like , from a few lights and a phone charger to systems that can run refrigeration, irrigation pumps, and small commercial equipment.
   What this means: the customer conversation is changing. It’s no longer just “electricity access”, it’s “productive use.” Households and small businesses will increasingly expect solar to power income-generating activity, not just lighting after dark.
3. Pay-as-you-go financing keeps winning
   Across East Africa, PAYG models have proven to be the mechanism that actually gets systems into homes at scale, because they solve the upfront cost barrier that blocks adoption. Kenya remains one of the most mature markets on the continent for this model, and it’s a template other markets are actively importing.
   What this means: financing innovation is now a core competitive advantage, not a back-office function. Flexible payment structures, mobile money integration, and credit scoring built for informal income are as important as the panels themselves.
4. Mini-grids move from pilot to infrastructure
   The mini-grid sector is projected to reach well over 100 million households by 2030, but current build rates are still falling short of that target — which means there’s a widening gap between ambition and delivery. Funding, permitting bottlenecks, and supply chains remain the binding constraints, not technology or demand.
   What this means: partnerships matter more than ever. The organizations that solve financing and regulatory friction , not just installation , will be the ones that actually hit scale.
5. AI and smart monitoring become table stakes
   Predictive maintenance, remote system monitoring, and smart energy management are moving from “nice to have” to standard practice, even in distributed and rural deployments. Weather-informed forecasting alone can meaningfully improve output, and remote diagnostics are cutting downtime industry-wide.
   What this means: the operational advantage over the next decade goes to companies that treat data as infrastructure , know which systems are underperforming before a customer calls, not after.
   How to get ahead of it
   Build for productive use, not just access. Design system tiers around income-generating appliances, not just lighting.
   Treat financing as a product. PAYG flexibility and mobile-money integration are differentiators, not overhead.
   Invest in remote monitoring early. The cost of doing it now is far lower than the cost of managing a large, unmonitored fleet later.
   Go where the gap is widest. The households still waiting for their first connection are the biggest growth opportunity of the decade , not an afterthought.
   The next ten years of solar won’t be won by whoever installs the most panels first. They’ll be won by whoever builds the most durable, trusted system for getting light , and everything it enables , into homes that have been waiting for it.
   At Green Mwangaza, that’s the work.
   What trends are you watching in the energy access space? We’d love to hear your take in the comments.