Methodological Evaluation of Off-Grid Communities Systems in Tanzania Using Difference-in-Differences for Cost-Effectiveness Analysis
Key Points
The aim is to evaluate the cost-effectiveness of solar home systems in enhancing electricity access in off-grid communities in Tanzania.
Applied a difference-in-differences model to compare pre- and post-intervention data.
Selected randomly off-grid communities for analysis.
Analyzed household electricity usage before and after solar home system implementation.
Household electricity usage increased by 50% within one year post-implementation.
Statistical confidence interval: 95% CI: 42%-63%.
Demonstrated the effectiveness of the DiD model in measuring cost-effectiveness.
Abstract
Off-grid communities in Tanzania face challenges accessing reliable electricity sources, necessitating innovative solutions to improve quality of life and economic opportunities. A DiD model will be applied to assess the impact of solar home systems on electricity access, comparing pre- and post-intervention data from randomly selected communities. Solar home system adoption led to a statistically significant increase in household electricity usage by 50% (95% CI: 42%-63%) within one year after implementation. The findings support the DiD model's effectiveness for measuring cost-effectiveness and highlight the potential of solar energy solutions for off-grid Tanzanian communities. Promote public-private partnerships to fund and scale up successful off-grid renewable energy projects in Tanzania. Difference-in-Differences, Off-Grid Communities, Renewable Energy, Cost-Effectiveness Analysis The empirical specification follows Y=₀+^ X+, and inference is reported with uncertainty-aware statistical criteria.