SGCI News
Scientists in Rwanda have found trees that could generate clean electricity. Scientists at Rwanda Forestry Authority have identified two tree species with potential to generate clean electricity, bringing power to…
Rwandan scientists identify trees suitable for sustainable power generation.
The high energy potential trees could reduce reliance on fossil fuels.
The tree species could improve soil health and enhance food security.
Scientists in Rwanda have found trees that could generate clean electricity.
Scientists at Rwanda Forestry Authority have identified two tree species with potential to generate clean electricity, bringing power to remote communities.
Rwanda has set a target of 100 per cent electricity access by 2030, but access to power in rural areas is still limited.
To address this, researchers are exploring the potential of generating electricity from sustainably grown plant biomass, assessing the energy potential of various tree species.
Bonaventure Ntirugulirwa, a senior researcher leading the initiative, said biomass had largely been ignored, despite its potential to replace conventional fossil fuels as a high-energy alternative.
“This project was designed to meet the electricity needs in rural areas,” he said.
After studying the biomass potential of a number of fast-growing trees and shrubs, the researchers identified the species Senna siamea and Gliricidia sepium as prime candidates for electricity generation.
These trees’ high wood density and calorific values mean they burn efficiently, making them high-heat alternatives to fossil fuels.
Ntirugulirwa explains that the research aimed not just to find trees that burn efficiently, but to address energy gaps in remote areas sustainably.
The research, he said, “would contribute to several objectives, such as protecting land, improving the soil, securing food, mitigating climate change, and alleviating rural poverty”.
The researchers explored the potential of multipurpose tree species such as Cajanus cajan (pigeon pea), Calliandra calothyrsus, Hagenia abyssinica (African redwood) and Senna spectabilis (whitebark senna).
These trees not only offer fuel for electricity generation but also provide valuable resources for farmers and their communities, said Ntirugulirwa.
“Farmers were allowed to test a given set of practices on their farm and select the ones that work best under their conditions,” he explained.
Farmers in different regions identified their preferred species based on local conditions and needs, he added.
With the most promising tree species identified, the researchers say they are now focused on generating electricity.
To make this happen, the project will rely on the active participation of farmers to grow enough biomass for energy production, Ntirugulirwa said.
So far, the team has measured the heating value of the biomass at the Rwanda Standards Board. However, testing for other key elements such as carbon and hydrogen will need to be carried out in Sweden, as Rwanda lacks the specialised equipment.
Babatunde Ajayi, a professor of Wood Products and BioResources Technology at the Federal University of Technology, in Akure, Nigeria, praised the project’s approach, particularly for addressing food shortages, poverty, and electricity gaps in rural areas.
“It’s good the initiative is resolving these issues,” he said.
“Using biomass to generate electricity is a welcome idea, especially in rural areas where access to power is extremely poor,” added Ajayi.
He compared the process to solar power, which uses sunlight to generate electricity.
“Once you put the biomass into a machine, it will convert it into electrical energy,” Ajayi said.
“It is like using solar, whereby a panel is outside, the sun beats the panel, and it is converted to electricity.”
The research project was funded by the Science Granting Councils Initiative (SGCI) in collaboration with Rwanda’s National Council for Science and Technology.
This article was written by Afeez Bolaji
Related News
Events | Partnerships | SGCI Africa News | SGCI News
Q&A: Partnerships key to collaborating for impactful outcomes
African scientists are trying to elevate their global presence through innovative partnerships. Copyright: Image by Freepik Abraham Mathodi – Acting Deputy Director, Ministry of Communications, Knowledge and Technology, Botswana speaks to SciDev.Net during the 2024 Annual African Science Granting Councils Meeting in Gaborone, Botswana. How can…
Uganda shores up shea butter value with time-saving tech
[KAMPALA] For Ojok Okello, a Ugandan shea nut farmer, turning his harvest into a marketable product was a lengthy and labour-intensive process, writes Johnnie Musenze. It would take at least ten hours, with several workers helping him, to process one kilogram of shea butter, a…
Botswana turns to goat milk to fill dairy shortfall
[MAUN, BOTSWANA] Could goat’s milk be the answer to Botswana’s milk shortage? Agricultural scientist Ntshepisa Lebetwa believes it could and has been exploring ways of making it even more nutritious, writes Baboki Kayawe. Botswana’s dairy sector has long been struggling from drought, disease outbreaks, and…