Géraldine Quelle

Job Title
Project Manager
Company
Phaesun GmbH
Country
Germany

Géraldine Quelle has been working for Phaesun GmbH since 2010 operating research and innovation projects in different African countries, currently coordinating the BeCool Kenya and Ghana project.
She holds a diploma in International Business Administration and a Master of Science in Sustainable Energy Systems.
Since its foundation in 2001, Phaesun has focused on PV Off-grid power supply for rural electrification, productive use solutions, water pumping systems and the caravan & camping sector. The main target regions are Africa, Latin America, Europe and the Middle East. Phaesun works closely with international NGOs and GOs as well as with local partner companies in the target countries to deliver and permanently establish energy in non-electrified areas.

May 07, 2025Local Construction of the First Low Carbon Cold Room In Kenya

The World’s Leading Exhibition for the Solar Industry
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Sessions
Session
Off-Grid: Electric Cooking, Cooling and Water Treatment

Wednesday, May 07, 2025, 09:00 am - 10:30 am

ICM München Room 14 C

Electric cooking with solar energy is on the rise as both solar and battery technologies continue to improve, making it viable for off-grid homes. One of the main hurdles for solar-powered electric cooking has been energy storage. Cooking typically requires a large amount of energy for a short period, while solar generation is intermittent. However, advancements in lithium-ion and solid-state battery technology have made energy storage more efficient, allowing for cooking after sundown or on cloudy days. The efficiency of electric cooking appliances has also improved: In induction stoves, for example, most of the energy goes directly into heating the pot or pan. Appliances like electric pressure cookers and slow cookers are also energy-efficient. They can be ideal for solar-powered cooking setups, as they require a relatively low, steady energy input over a long period of time. With continuous advancements in solar PV and battery storage, solar electric cooking is likely to spread further in regions where grid access is limited or costly, such as parts of Africa, South Asia, and Latin America. In off-grid areas with limited access to electricity, PV systems are also key for powering refrigerators, freezers, refrigerated containers, and cold rooms. They are particularly valuable in rural or remote settings for storing perishable goods, medicines, and vaccines. New technological developments have significantly increased the efficiency of solar refrigeration systems, minimizing or even eliminating the need for battery power at night and during periods of low sunlight.Solar energy can also be used to purify or treat water to make it safe to drink or for agricultural or industrial use. This method leverages the power of sunlight, either directly or indirectly, to remove contaminants, pathogens, and impurities from water. There is a variety of methods for solar water treatment, ranging from using the sun's UV-A rays and heat to complex solar-powered water filtration systems where PV-generated electricity is used to pump water through advanced filtration systems such as ultrafiltration or RO (reverse osmosis). However, solar water treatment systems are still costly and require advanced technology and expertise.This session will provide an overview of current developments and insights into new applications for solar-powered cooking, cooling and water treatment.

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