Electricity without Electricians: Diffusion and durability of informal off-grid solar in rural Madagascar
This study argues that while affordable, non-branded off-grid solar systems have successfully diffused in rural Madagascar due to their functional benefits and cultural compatibility, their long-term durability is compromised by underestimated technical complexity, necessitating greater policy support for technical capacity building to ensure reliable energy access.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
In many remote corners of the world, the promise of electricity often arrives not through a massive power plant or a long line of utility poles, but through a small, silent panel on a roof. This shift is part of a global effort to solve energy poverty, a condition where people lack access to reliable power for basic needs like lighting and charging phones. For decades, experts have studied how new technologies spread through communities, a process often described by the idea that people adopt innovations when they see clear benefits, find them easy to use, and can see others using them successfully. In places like rural Madagascar, where the national power grid is unreliable or non-existent, this spread of solar power is happening rapidly. However, a critical question remains: does the speed at which these solar systems appear in villages mean that the energy access is actually lasting, or are people buying systems that break down quickly because they do not understand how to care for them?
A team of researchers from Charles Darwin University traveled to the Anosy region in southern Madagascar to investigate this exact puzzle. They focused on a specific area where the government and international donors have promoted "off-grid solar" as a primary solution. The researchers were particularly interested in the difference between two types of solar products. One type comes from well-known, branded companies that often sell integrated systems with warranties and payment plans. The other type, which dominates the local market, consists of loose, unbranded parts—solar panels, batteries, and wires—sold separately by local vendors. These unbranded systems are cheaper and more flexible, but they lack the safety nets of the branded versions. The researchers wanted to understand why rural families chose one over the other and whether the speed of adoption was masking deeper problems with how long these systems actually lasted.
To find the answers, the researchers spent time in three rural villages near the town of Fort Dauphin. They interviewed nine households that used solar power and five local vendors who sold the equipment. They did not just ask questions; they watched how the systems were installed, how they were used every day, and what happened when they broke. They observed the physical reality of the technology: the tin kerosene lamps that were being replaced, the wires that were tied together to turn on a light, and the heavy lead-acid batteries that sat on the floor. By looking closely at the daily lives of these families, the researchers could see the gap between the promise of solar power and the reality of keeping it running.
The study found that the main reason families switched to solar was simple economics and function. For many, the solar system was a way to stop spending money on kerosene, which is expensive and dangerous. But beyond saving money, the unbranded systems offered something the expensive, branded ones did not: flexibility. In the local villages, people could buy a small battery first, and then, months later, buy a solar panel to go with it. They could add a radio or a television as they saved up more money. The branded systems, by contrast, were sold as complete packages that could not be easily changed or expanded. For families with irregular incomes, this ability to build a system piece by piece was a powerful advantage. It fit their lifestyle perfectly, allowing them to avoid debt and pay for what they needed when they could afford it.
However, this flexibility came with a hidden cost that the researchers identified as a major barrier to long-term success. The very things that made the unbranded systems easy to buy also made them difficult to use correctly over time. The researchers found that many families did not understand the technical requirements of the systems they bought. They often lacked a crucial component called a charge controller, a small device that prevents the battery from being overcharged and damaged. Without it, the batteries would fail much faster than expected. In some cases, families were told to refill their batteries with battery acid, a dangerous mistake, when they actually needed distilled water. Because the systems were sold without instructions or training, families were left to figure out the installation and maintenance on their own, often relying on guesswork or the advice of neighbors who were just as uninformed.
The result was a cycle of rapid adoption followed by rapid failure. The researchers saw solar panels that had been stolen because they were not securely mounted, and batteries that had exploded because they were not maintained properly. One family recounted how their daughter was lucky to be out of the house when a battery exploded, leaving them to clean up the debris and bury the remains. Despite these dangers and breakdowns, the families kept using the systems, often keeping their old kerosene lamps as a backup for when the solar power failed. The researchers noted that the visibility of the solar panels on the roofs helped drive more people to buy them; seeing a neighbor with a panel was enough to convince others to try it, even if they did not know how to keep it working.
The study concludes that while the unbranded solar market is successfully spreading electricity to remote areas, it is not necessarily creating a durable solution. The speed at which these systems are being adopted is driven by their affordability and flexibility, but this same speed is undermined by a lack of technical knowledge. The researchers argue that simply selling more solar panels is not enough. To turn this rapid diffusion into reliable, long-term energy access, there must be a shift in how the sector is supported. This includes recognizing the role of the informal market and investing in technical training for the vendors, installers, and the families themselves. Without this support, the solar revolution in rural Madagascar risks becoming a series of short-lived experiments rather than a permanent source of light and power for the people who need it most.
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