UK development finance institution British International Investment (BII) has committed $20-million to impact investment organisation Acumen’s Hardest-to-Reach (H2R) Initiative to help expand access to affordable, reliable and clean energy in frontier economies in Africa. The initiative’s debt-focused vehicle H2R Amplify will provide financing to established offgrid solar companies in the most underserved countries in sub-Saharan Africa to accelerate energy access.