JOHANNESBURG, South Africa—Energy analysts say South Africa’s entire electricity grid is in danger of collapsing, as an energy crisis that began in 2008 plunges the continent’s most technologically developed nation into economic stagnation that is exacerbated by the COVID-19 pandemic. For the past two weeks, the country’s national power company, Eskom, has battled to turn the lights back on following extended periods of what South Africans have come to know, and detest, as “load-shedding.” When the ailing electricity network comes under severe pressure, the corporation switches power supplies off in stages across the nation of 60-million people, to “shed load” in a desperate attempt to ration dwindling “emergency reserves.” Eskom, the biggest power producer in Africa, generates 95 percent of electricity used in South Africa, but has now acknowledged that only 2 of its 13 power stations are generating the levels of electricity required. “Years of neglect, corruption, mismanagement and …