East Africa's off-grid solar energy market is expanding rapidly due to falling technology costs and flexible pay-as-you-go mobile payment systems. A development report estimates that household solar installations will rise from 2.35 million at the end of 2018 to 5.82 million by the end of 2024.
Social enterprises and private companies are investing heavily in solar micro-grids to meet the energy demands of rural communities, who are increasingly using solar power for lighting, cooking, and powering small businesses.
Using the information above, calculate the increase in estimated household solar installations in East Africa between 2018 and 2024.
