Rural electrification and capacity expansion with an integrated modeling approach

Abstract

In developing countries, mini-grids are seen as an important option to improve electrification rates in rural areas. In order to be successful, mini-grids face issues of operation and sizing of generation capacities. Current studies on the optimal sizing of mini-grids do not include capacity expansion feedbacks regarding the operator's or investor's long-term economic performance on growth in electricity usage, e.g. gap between demand and supply impacting the operator's income. Using a System Dynamics model, this paper compares the impact from two capacity expansion strategies on rural mini-grid operator's long-term economic performance. The two capacity expansion strategies are: a strategy with minimized costs and a strategy where only diesel power is allowed. Research shows that a costminimized capacity expansion strategy might not be the most beneficial solution for the operator's long term financial performance. Specifically, the high investment costs prohibit the implementation of the cost-minimized expansion strategy. In addition, the diesel-only expansion strategy suffers from high operational costs, which creates long-term challenges as the share of diesel increase. Therefore, the timeline of the investments and when to implement different strategies is important, creating a benefit for a System Dynamics approach.

Electricity access and rural development: Review of complex socio-economic dynamics and causal diagrams for more appropriate energy modelling

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Analysis of the Effect of Parameter Variation on a Dynamic Cost Function for Distributed Energy Resources: A DER-CAM Case Study

“…The effect of capacity expansion strategies on long-term economic performance for a rural mini-grid operator was investigated by Hartvigsson et al in [21]. The research proposed a linear bottom-up model, and used DER-CAM to implement the capacity investment model.…”

Designing Institutional Models for Renewable Energy Project Sustainability

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