Browsing by Autor "Pedro Crespo del Granado"

Now showing 1 - 4 of 4

Integrating climate-driven hydropower variability into long-term energy planning: A Bolivian case study under El Niño and La Niña scenarios
(Elsevier BV, 2025) Carlos A.A. Fernandez Vazquez; Santiago Mendoza Paz; Adele Hannotte; Sergio Balderrama; Pedro Crespo del Granado; Sylvain Quoilin
Local electricity market designs for interconnected nanogrids: Impact on rural electrification in Madagascar
(Elsevier BV, 2024) Lea Bertram; Ida Fuchs; Victor Banuls Ramirez; Pedro Crespo del Granado; Sergio Balderrama
Sustainable, reliable, and affordable energy access is a major challenge in many parts of the world. The paper addresses this challenge by proposing a local electricity market (LEM) design for nanogrids deployed in Madagascar. Each nanogrid shares a solar PV and battery system, and it meets demand locally before trading surplus energy with other nanogrids on a microgrid bus, facilitated through the creation of a LEM. Two distinct market approaches are investigated and compared: central clearing and bilateral trading. Bilateral trading generates trading prices through direct interaction between consumers and producers, whereas central clearing sets a single trading price based on the cost-ordered supply curve. Our study shows that central clearing generates more consumer-friendly prices and facilitates the trading of all technically feasible energy, while bilateral trading may results in unmatched trading capacity. We find an average price for central trading of 0.49 €/kWh compared to 1.24 €/kWh with a bilateral trading mechanism. To promote the low market prices, a bottom-up retail tariff structure is proposed. The aim of this simplified tariff is to promote initial electrification by minimizing entry prices for end-users’ first electricity access to 0.89 €/kWh compared to the current average of 2.11 €/kWh. The discussed results were evaluated in consultation with the local company in Madagascar to ensure practical suitability and to achieve maximum significance.
Surplus energy in solar home systems as driver for bottom-up grids: When grids emerge from the edge
(2023) Ida Fuchs; Sergio Balderrama; Pedro Crespo del Granado; Sylvain Quoilin; Jayaprakash Rajasekharan
In this paper, surplus energy (SE) from solar home systems (SHS) with energy storage is studied from the perspective of bottom-up grids. The paper addresses two central research questions: 1) How much SE do SHS generate depending on system size parameters and load metrics? and 2) Can SE provide the basis for bottom-up grids in rural swarm electrification? We first analyze different SE profiles for different stochastic demands from three households with various PV and battery system sizes. Next, we analyze how these SE profiles can be used to supply additional households with lower or equal demand. We find that the SE is highly dependent on PV size and cannot be significantly reduced by increasing battery size. Demand profiles with high Peak to Average Power Ratio (PAPR) and low Load at Day Time Ratio (LDTR) are shown to have the highest levels of SE. Simulations show that households with PV and battery system can supply several other households with its SE only. This study shows excellent potential for developing a framework model for bottom-up grids through SHS sizing and bottom-up planning of interconnections in rural communities.
Swarm electrification: Harnessing surplus energy in off-grid solar home systems for universal electricity access
(Elsevier BV, 2023) Ida Fuchs; Sergio Balderrama; Sylvain Quoilin; Pedro Crespo del Granado; Jayaprakash Rajasekharan