From Science Node: “Solar energy benefits education and research in Africa”

Science Node bloc
Science Node

28 June, 2017
Megan Ray Nichols

No image caption or credit.

Research and education networks are under threat in Africa due to frequent power outages. Solar-powered batteries may hold the key to network resilience and scientific autonomy.

It’s hard to imagine that in our technologically advanced society that there are people without electricity, but this is exactly what happens in many parts of Africa.

With many remote regions and an unstable electrical grid, the science and education made possible by national research and education networks (NRENs) are often in jeopardy. Solar-powered batteries might just be the solution.

Electricity, education, and research in Africa

It is estimated that millions of families in Africa are without power, and the policies the government must enact to make electricity more available are slow in coming. Finding a viable and economical way to connect everyone to the grid has been a challenge.

Wow!! Power to the people. Microgrids, like the one featured in this Tesla video, combine solar panels and rechargeable batteries to liberate remote regions from the tyranny of power outages. Courtesy Tesla.

Electrical service disruption directly affects network operating centers (NOCs), network point-of presences (PoPs), research institutions, and students throughout the continent.

“Information and communication technology (ICT) services define our daily lives,” notes Stein Mkandawire, chief technical officer for the Zambia Research and Education Network.

“Funding standby generators for daily running of NOCs, PoPs and institutions is required, and that results in high service provision costs.”

Even in less remote locales with an electrical infrastructure in place, blackouts occur frequently. The net result is an extreme hindrance for the scientific and educational projects underway in Africa.

“Power outages often worsen the challenges faced when establishing NRENs in Africa because periods where power mains fail in excess of two days are still common,” says Isaac Kasana, CEO of the Research and Education Network for Uganda (RENU).

Here comes the sun. Electrical infrastructure is often taxed by the rugged expanses of Africa, handicapping scientific communications. Solar power is lighting the way to a solution. Courtesy McKinsey and Co.

“Failure is so repetitive that the mains-charged battery systems are unable to sustain sufficient levels of operating autonomy to prevent site power shutdowns from occurring.”

Power outages not only affect a specific site or campus but also the connectivity of other linked campuses. For instance, RENU’s network follows a sub-ring topology with typically eight or nine daisy-chained campus networks.

Multiply that by the number of researchers, teachers, students, and communities depending on ICT services, and the fragility of the enterprise becomes apparent.

In the face of these challenges, NREN engineers are looking to solar power as a way to sustain electricity during frequent blackouts.

Harnessing solar power

Solar power. No image credit

Being able to tap into solar energy for electrical power works best when there is a way to store that energy. In the past, batteries haven’t always worked as well as they should.

But with advances in technology, solar-powered rechargeable batteries now make renewable energy systems reliable and viable.

“Many African countries have plenty of sunshine which can be used as alternative source of energy, so solar energy is a means to sustain the NRENs in times of blackouts,” says Mkandawire.

The doctor is in. Remote researchers (and their data) cut off by intermmitent power supplies may find respite with implementation of solar-powered rechargeable batteries. Courtesy Johns Hopkins School of Public Health.

Since most days have sufficient periods of intense sunshine, this would ensure near-continuous solar charging. When tied into a hybrid-charged power system, batteries can greatly enhance NREN resilience.

“For up-country campuses and rural-located research stations (such as the NIH station at Rakai), solar-charged batteries may provide the most cost-efficient means of powering connectivity and other ICT equipment, says Kasana. “This will increase an NREN’s national coverage by enabling the connection of remote research stations and enhancing access for researchers who have to be based at such remote sites.”

By supplying countries with a reliable source of power from solar, African NRENs can send a steady stream of services to institutions, research bases, and communities. This in turn, gives better access to learning materials.

The benefits of solar power

There are many affordable options for families in Africa to bring electricity through solar power into their homes. Using apps on their phones and equipment they can buy at the store, they can power their homes for less than $60 per year. Several places have already started using solar power — it provides electricity to areas that desperately need it, creates jobs, and furthers research and education.

An education is one of life’s most precious acquisitions. But without the resources needed to teach and learn, knowledge-creation stalls.

Solar power is brightening the future of science and research in Africa.

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