PAYGo financing and mini-grids are turning decentralized power into a scalable business model
For decades, energy investment in Central Africa focused on large hydropower stations, national grids and transmission lines. Those projects remain important, but they are slow to build, expensive to finance and often fail to reach remote communities where electricity access is most limited. A different model is now gaining ground. Venture capital firms and impact investors are increasingly backing decentralized solar systems and renewable-powered mini-grids that can bring electricity to villages within months rather than years. The appeal is not only the technology, but also the business model behind it.
A key driver is the Pay-As-You-Go, or PAYGo, system. Under this model, households pay small amounts daily or weekly through mobile money platforms while receiving electricity immediately. The approach lowers the entry barrier for low-income customers and creates recurring revenue streams that are attractive to investors. PAYGo companies are increasingly functioning like fintech platforms rather than traditional energy suppliers. Many systems can be remotely activated or suspended, which helps firms manage payment risk and improve collections. Once customers build a repayment record, companies can also offer additional products such as smartphones, televisions, refrigerators, irrigation pumps and insurance. Several African companies have already shown that the model can scale. Sun King says it now serves more than 50 million users across Africa and Asia and was deploying about 330,000 solar products a month by the end of 2025. M-KOPA has also expanded beyond household solar into a broader consumer-finance platform serving more than five million customers.
Investment is also moving toward village-scale mini-grids. These systems can power schools, clinics, small businesses and agricultural processing facilities at the same time, making them especially useful in places where extending the national grid is too costly. In the Democratic Republic of the Congo, one of the region’s most difficult markets for grid expansion, mini-grids are emerging as a commercially viable alternative.
WeLight, which describes itself as Africa’s largest solar mini-grid operator, has announced plans to invest about $650 million to expand its footprint, including projects in the Democratic Republic of the Congo and Nigeria. The move reflects growing investor confidence that decentralized electricity networks can be deployed at scale while still generating stable returns. The broader financing picture also points in the same direction. Industry data shows off-grid solar investment recovered during 2025, with capital increasingly flowing to larger companies that already have scale, repayment history and access to structured finance. That shift suggests investors are moving away from early-stage bets and toward businesses with proven operating models. Large hydropower projects and national grids will still matter for Central Africa’s long-term energy development. But the region’s next major power gains may come from thousands of smaller solar systems and mini-grids funded by digital payments and private capital.
For investors, off-grid energy is no longer just about delivering electricity. It is becoming a platform for recurring revenue, wider digital inclusion and access to new consumer markets across one of the world’s least electrified regions.
