ABUJA — The Nigerian Economic Summit Group expects the economy to grow by about 4.2 per cent in 2026, with growth of 4.5 per cent in the second half, according to its mid-year report. It forecasts inflation to average 15.5 per cent in the second half. The group named oil, domestic refining, manufacturing and services as growth drivers, and listed global shocks, election spending, insecurity and flooding as risks.