Solar home systems (SHSs) have seen rapid growth and have proven to be a viable source of electricity for households due to their capability to reach remote users that do not have access to grid systems. Based on a comprehensive literature review of 139 papers focussing on SHSs in Sub-Saharan Africa, this paper highlights the key trends, research gaps and policy recommendations. The literature was categorised into four themes: institutional, technology, viability and user-centric. The review finds that the current primary themes of research are technology, user-centric and viability. This highlights the need for further research into the institutional barriers, need for a regulatory framework and stronger incentives for scale-up of SHSs. PAYG systems are gaining ground in off-grid solar markets providing flexibility on payments for consumers in resource challenged settings. The authors also identified paucity of research in countries with low electrification rates, highlighting new locations for SHS research.