How might the introduction of dual time zones in South Africa, or perhaps daylight-savings time in summer, impact on our energy consumption? Could either of them ease the demand on the electricity network and also boost our physical and mental wellbeing? Lester Kiewit speaks to Dr Jason Samuels, an adjunct lecturer at Stellenbosch University’s Industrial engineering department, and also the co-founder and MD of Stellenbosch spin-off energy company GreenX.