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To evaluate the cost-effectiveness of transitioning from diesel generators to solar photovoltaic systems in off-grid communities in South Africa.

March 7, 2026Open Access

Methodological Evaluation of Off-Grid Communities Systems in South Africa Using Difference-in-Differences for Cost-Effectiveness Measurement

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To evaluate the cost-effectiveness of transitioning from diesel generators to solar photovoltaic systems in off-grid communities in South Africa.
Applied a difference-in-differences (DiD) model to assess impact.
Controlled for time trends and spatial fixed effects using Bayesian hierarchical modelling.
Evaluated using robust standard errors to manage uncertainty.
Operational costs reduced by approximately 40% after transitioning to solar PV systems.
Lower variability of costs was observed across regions compared to baseline conditions.
DiD model identified cost-effectiveness improvements without relying on uniform pre- and post-treatment data.

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A methodological evaluation measures cost-effectiveness of solar PV systems in off-grid communities, suggesting positive economic impacts.

Nokuthula Mkhize (2008) studied this question.

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A methodological evaluation measures cost-effectiveness of solar PV systems in off-grid communities, suggesting positive economic impacts.