Venkatachary, Sampath Kumar, et al. “Challenges, Opportunities and Profitability in Virtual Power Plant Business Models in Sub Saharan Africa - Botswana”. International Journal of Energy Economics and Policy, vol. 7, no. 4, Sept. 2017, pp. 48-58, https://econjournals.com.tr/index.php/ijeep/article/view/4973.