The combination of higher electricity tariffs and the fall in solar photovoltaic costs is making it increasingly feasible for companies and high-income households to invest in self-generation to reduce reliance on Eskom or, in some extreme cases, to defect from the grid entirely. In a context of serious corruption and chronic under- collection by Eskom, some may well be viewing the higher tariffs as an unfair tax and their self-generation investments as a form of tax revolt.