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Building an Interactive Radio Network for Farmers in Nigeria

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

As solar power technology has improved, new pioneers have emerged to exploit this innovation. Several decades ago, solar power was seen as too expensive for wide-scale roll out in poor countries and communities. But today, an army of solar technology pioneers has fanned out across the world to show the new wave of innovations and how they make solar power affordable.

More than 1.7 billion people around the world have no domestic electricity supply, of whom more than 500 million live in sub-Saharan Africa (World Bank). Without access to domestic electricity, these people need to fall back on expensive, battery-powered devices or use gas generators and lamps: a cost that eats into their income.  

More than 90 percent of Nigeria’s estimated 155 million people (US Census Bureau) live on just US $2 a day. Many of them are small farmers in remote areas. Access to information is very poor, especially critical information that can improve farming methods and boost incomes.

One of the most effective ways to communicate to a large number of people over a large territory is through radio.

A clever use of solar-powered battery radios has enabled the building of a low-cost, two-way communications network for rural farmers. The Smallholders Farmers Rural Radio (http://smallholdersfoundation.org) network broadcasts to 250,000 listeners with 10 hours of daily programming. The communications network reaches 3.5 million farmers in around 5,000 villages in Imo State (www.imostate.gov.ng), southeast Nigeria. The programming tackles issues from sustainable farming practices to HIV/AIDS and how to open a bank account . The clever part is the two-way dialogue between the listeners and the radio station. This is done through mobile radios known as AIR devices. They are small, solar-powered radios that let listeners send voice messages to the radio station. The message is stored on the radio station’s computers and later broadcast during a programme, allowing farmers to share their experiences, ask questions and receive answers in their own language.

The slim, hand-held silver-coloured radios have a small antenna and dials.

The network was created by Nnaemeka Ikegwuonu, who won a 2010 Rolex Laureate award (http://young.rolexawards.com/laureates/nnaemeka_ikegwuonu). The awards seek to foster innovation in the next generation. Launched in 2009, it looks for “visionary young men and women at a critical juncture in their careers, enabling them to implement inventive ideas that tackle the world’s most pressing issues in five areas: science and health, applied technology, exploration, the environment and cultural preservation.”  

Ikegwuonu hopes to bring the service to other parts of Nigeria.

His radio studio is the height of simplicity and sophistication: a laptop computer, a microphone, a headset and a small control board to manage the sound levels. The radio signal is broadcast through a 30-metre-high antenna.

Solar power is being creatively used in many countries to tackle energy poverty. This ranges from lamps and lights to cookers to small power packs for electronic devices, all the way to large hardware to power homes and communities.

In India, whole villages are already using solar energy and improving their standard of living. Various companies and projects are selling inexpensive solar appliances – from cooking stoves to lanterns and power generators – across the country.

A report by the International Finance Corporation called the sub-Saharan solar market the largest in the world – a market of 65 million potential customers, who could access off-grid lighting over the next five years (IFC). The report anticipated high growth rates of 40 to 50 percent for anyone entering the market, with less than one percent of the market currently being served.

With a billion Africans using just four percent of the world’s electricity (The Economist), energy poverty is already harming further economic growth and development gains. As Africa’s population is expected to double to 2 billion by 2050, the gap between people’s needs and the power available will be stark: in Nigeria, out of 79 power stations, only 17 are working (The Economist). It will take innovators like Ikegwuonu to bring hope to this situation and transform lives despite the obstacles.

Published: December 2011

Resources

1) ToughStuff has developed a modular range of affordable solar powered energy solutions to the three main power needs of poor consumers in the developing world – lighting, mobile phones and radios. Website:www.toughstuffonline.com

2) Solar Power Answers is a one-stop-shop for everything to do with solar power. It has a design manual and guides to the complex world of solar power equipment. Website:www.solar-power-answers.co.uk/index.php

3) How We Made It Africa: A website detailing success stories on businesses investing in Africa and how people are making the most of opportunities on the continent. Website:www.howwemadeitinafrica.com

4) Solar Sister: A clever way to sell solar lamps and torches using a network of women. Website: www.solarsister.org

5) D.light Design: Their lights use LEDs (light emitting diodes) (http://en.wikipedia.org/wiki/LED_lamp) and are four times brighter than a kerosene lantern according to D.Light Design. Website: www.dlightdesign.com

6) Lighting Africa: Lighting Africa, a joint IFC and World Bank program, is helping develop commercial off-grid lighting markets in Sub-Saharan Africa as part of the World Bank Group’s wider efforts to improve access to energy. Lighting Africa is mobilizing the private sector to build sustainable markets to provide safe, affordable, and modern off-grid lighting to 2.5 million people in Africaby 2012 and to 250 million people by 2030. Website: www.lightingafrica.org

7) A list of Nigerian companies selling solar-powered equipment and devices. Website: http://posharp.com/solar-energy-service-companies-in-nigeria-in-alphabetic-order_renewable.aspx?ptype=solar&btype=service&gtype=country_NG&xtype=ntype

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator. 

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This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2023

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Tapping the Power of Child Play

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

Children are an amazing source of energy. Each generation fizzes with the restlessness and optimism of youth. But all that energy is expended in the playground, leaving behind nothing but the sound of laughter. What if that energy could actually be harnessed and turned into electricity? And electricity to power the cash-strapped school the children need to attend to get a good head start in life?

Meeting the Millennium Development Goal of achieving universal primary education would be significantly helped if schools had electricity and in turn the ability to use computers and the Internet. As well, school buildings can be used to their maximum if they have lights for night schools, and expand to secondary and adult education. It is typical practice in Africa to use schools in the evenings for older students. But usually they only have kerosene lamps to turn to for light.

The need is urgent for electricity for schools in Africa: even sub-Saharan Africa’s richest nation, South Africa, has 5,131 schools without electricity. And in the battle for energy, schools have to compete with businesses and cities, as increasing demand makes power outages more common.

Child-power is currently used to run Playpumps’ merry-go-rounds, drawing water from wells. But a children’s see-saw hopes to use the same principle to bring light to power-starved African schools. Children in Uganda are involved in a pilot test of a see-saw that generates electricity with the simple up-and-down motion of the playground ride. The electricity generated is sent to a storage battery via an underground cable. Just five to 10 minutes on the see-saw can generate enough electricity to light a classroom for an evening.

The see-saw is being tested in the Ugandan city of Jinja, made from locally sourced parts, and has been designed by 23-year-old British design student Daniel Sheridan. He was inspired after volunteering on a school trip to the island of Wasimi, south of Mombasa, Kenya, while building a school and teaching.

“The number of children we saw there that loved to play, and their vibrancy, I thought it would be great if I could somehow make use of this,” he told the BBC. “They don’t have Gameboys and all the rest. They are just so genuine and keen to help – they would grab the wheelbarrows we were working with given the chance.”

Sheridan won £5,500 (US $10,930) to further develop the idea at various university student enterprise award schemes. The money is being used for prototype development.

“The current need for electricity in sub-Saharan Africa is staggering. Without power, development is extremely difficult. The potential for this product is huge and the design could be of benefit to numerous communities in Africa and beyond.”

After the prototype testing in Uganda he hopes to either start a business or charity to manufacture the see-saws. His dream?

“Ultimately I would love to design a whole playground of different pieces of equipment that could generate enough electricity to power a whole village.”

Published: April 2008

Resources

  • Playpumps International: More child-powered ways to make a difference: these water pumps draw water from a well while children spin on the merry-go-round. Website: www.playpumps.org
  • OUiP! Or Optimized Universal Interface Platform: This white plastic handheld electronic bar uses the child’s play motion to power it, while it makes noises and displays images. Website: www.thinkthing.net
  • Sprig Toys: Electro-mechanical toys made from wood and recycled plastic that are run on child-power only. Website: www.sprigtoys.com

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator. 

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2023

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Indian Solar Economy Brings New Vocation for Women

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

India has started to make significant advances in developing solar power technologies for the poor. There are now whole villages using solar energy and improving their standard of living. Various companies and projects are selling inexpensive solar appliances – from cooking stoves to lanterns and power generators – across the country. This new solar power ‘grid’ is also bringing further economic opportunities: jobs for people to repair and maintain the new equipment.

An interesting initiative is turning the need to repair and maintain solar-powered equipment into a job opportunity for poor women.

More than 1.7 billion people around the world have no domestic electricity supply, of whom more than 500 million live in sub-Saharan Africa, and 400 million in India (World Bank). Some 600,000 Indian villages lack an electrical supply. India’s Prime Minister Manmohan Singh has pledged “power for all” by 2012. An ambitious goal, and one that acknowledges that without electricity, many development goals remain dreams that will never be achieved.

Being able to see at night, for example, unleashes a vast range of possibilities – such as being able to work or study later – but for the very poor, lighting is often the most expensive household expense, soaking up 10 to 15 percent of income.

The power of the sun can help transform this situation. According to Greenpeace (http://www.greenpeace.org/international), India could generate 10 percent of its electricity from solar power by 2030.

In the Indian State of Rajasthan, more than 30,000 homes in 800 villages have turned to solar power for lighting and cooking needs. It is this increasing solar power grid that the Barefoot College (http://www.barefootcollege.org) based in Tilonia – where it was founded over 30 years ago – has turned to as a new economic opportunity. The College is training women to be solar engineers, developing both useful skills and a new income source. So far, Barefoot College itself has solar electrified some 350 villages across India and dozens more in sub-Saharan Africa and even war-torn Afghanistan.

The College prides itself on stripping out academic jargon while inspiring confidence in students’ innate talents and skills so they can take on new vocations.

The solar engineers – many of whom are illiterate – are taught by their peers. Given a box of tools and hardware, the students undertake practical projects to learn-by-doing how the solar devices work and can be repaired. They are introduced to technical terms and concepts and learn how to wire circuits and do daily repairs.

“It is only, we have found, an illiterate woman who is a teacher who can actually train an illiterate women who is a trainer,” the college’s founder, Bunker Roy, told the BBC. “They have the patience, tolerance and improvisation.”

Roy says the training teaches more knowledge of the technical aspects of solar power than a typical student would glean from an undergraduate university degree.

The Barefoot College takes its inspiration from former Indian leader Mahatma Ghandi (http://en.wikipedia.org/wiki/Mohandas_Karamchand_Gandhi), who felt the wisdom, knowledge and skills already existing in rural villages should be the basis for any development. He also believed deploying sophisticated technology in poor communities should be done on their terms to avoid exploitation.

The College is a passionate believer in the inherent skills and abilities of the poor to improve their conditions. It eschews formal qualifications, believing these can be as much a hindrance as a help, trapping people in rigid methodologies.

The Barefoot College has been working on solar electrification in poor and rural villages since 1989. It has used similar techniques to train teachers and teach medical skills.

The course has successfully attracted sponsored students from as far away as Africa. Sarka Mussara, a 56-year-old widowed grandmother from the West African nation of Mauritania, had never attended school or even left her village before coming to India on a UN sponsorship.

“We started little by little learning the solar energy system,” she told PBS. “Day by day and little by little we were able to put things together.”

The solar engineers become highly skilled and can even fabricate complex components like a charge controller (http://en.wikipedia.org/wiki/Charge_controller) when they are back in the village.

One of the additional benefits of training skilled solar engineers is the more confident role these women play in their communities when they return. They often take the lead on other projects in the village.

The College also picks the tough cases: only villages that are inaccessible, remote or non-electrified get help.

Its approach is to have a meeting to introduce the benefits of solar lighting to the community. If the community wants it, then a village committee is formed. Any household that wants solar power has to pay a small fee, no matter how poor. This is to ensure they feel a sense of ownership of the new technology.

Some members of the community are then selected to be trained as “Barefoot Solar Engineers,” or BSEs. They will install, repair and maintain the solar lighting units for at least five years. A workshop is set up to carry out repairs fully equipped with tools and replacement parts. The solar engineers attend a six-month course at the College, leading to work for at least five years.

The Barefoot College encourages middle-aged women and widows and single mothers to become engineers. Experience has shown them to be the most reliable and less prone to moving to the city after training.

Published: May 2010

Resources

1) D.light Design is dedicated to bringing modern lighting and power to more than 1.6 billion people globally currently living without electricity. They aim to be the number one player in off-grid lighting and power solutions worldwide. Website: http://www.dlightdesign.com

2) Solar Power Answers is a one-stop-shop for everything to do with solar power. It has a design manual and guides to the complex world of solar power equipment. Website: http://www.solar-power-answers.co.uk/index.php

3) Sun King solar lantern: The lantern provides 16 hours of light for a day’s charge. Website: http://www.greenlightplanet.com/ourusers.html

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.  

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2022

Categories
Archive Development Challenges, South-South Solutions Newsletters Southern Innovator magazine

Solar Sisters Doing it for Themselves: Tackling African Light Famine

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

A social enterprise is seeking to capture the power of the sun to bring light and economic opportunity to women in Africa. Using a direct-marketing distribution system, it sells solar lamps and lanterns to some of Africa’s remotest communities. Solar Sister (www.solarsister.org), launched in Uganda in 2010, is hoping to do for power generation what mobile phones have done for communication in Africa: make a technological leap to a model of grassroots power generation, rather than waiting for large-scale power schemes to eventually reach the poor and rural.

More than 1.7 billion people around the world have no domestic electricity supply, of which more than 500 million live in sub-Saharan Africa (World Bank).

Solar power is being creatively used in many countries to tackle energy poverty and give women, in particular, viable sources of income. In India, whole villages are already using solar energy and improving their standard of living. Various companies and projects are selling inexpensive solar appliances – from cooking stoves to lanterns and power generators – across the country.

A billion Africans use just four percent of the world’s electricity (The Economist). Energy poverty is already harming further economic growth and development gains. With Africa’s population expected to double to 2 billion by 2050, the gap between people’s needs and the power available is stark: in Nigeria, out of 79 power stations, only 17 are working (The Economist).

A report by the International Finance Corporation called the sub-Saharan solar market the largest in the world – a market of 65 million would-be customers, who could access off-grid lighting over the next five years (IFC). The report anticipated high growth rates of 40 to 50 percent for anyone entering the market, with less than one percent of the market currently being served.

Being able to see at night unleashes a vast range of possibilities, such as being able to work or study later. But for the very poor, lighting is often the most expensive household expense.

As Solar Sister founder Katherine Lucey points out, households “rely on kerosene lanterns and candles for light. They spend up to 40 percent of their family income on energy that is inefficient, insufficient and hazardous. Widespread use of kerosene has an adverse impact on local air quality as well as on global climate change.

“Poor lighting, smoke and rudimentary lanterns are responsible for a large number of infections and burn injuries. Within the household, women are responsible for kerosene purchases and use – in order for new clean energy technology to be adopted at the household level, women have to ‘buy in’ to the technology.”

And this is the challenge: to find an affordable – and sustainable – way to bring electricity and energy to people living in remote and rural areas. These are places that face stark options: to remain off-grid and energy poor, or to abandon their communities and join the many millions across the global South on the march to urban and semi-urban areas in search of income and opportunity.

Lucey says that could be “a recipe for disaster”.

“In a country like Uganda, with a population of 32 million people, it is not possible to have them all move to Kampala to access electricity,” she said. “It would overburden already stretched infrastructure and services and disrupt the social and economic structures of an entire population. In the end, it can challenge the stability of entire nations.”

The Solar Sister direct-marketing model works like this: micro-investment capital of US $500 is invested in one Solar Sister Entrepreneur and she receives a ‘business in a bag’: a start-up kit of inventory, training and marketing resources. As her own boss, she has a strong incentive to succeed. She uses the money to purchase a consignment of lamps or lanterns, which she then sells, encouraging people to replace kerosene lamps with solar lamps: healthier, safer and better for the environment. She is encouraged to use her existing networks of family, friends and neighbours to reach rural and hard-to-reach customers.

The Solar Sister, after succeeding in selling the first consignment of lamps, then receives training in marketing and inventory and business skills. She can then move on to be a team leader and recruit other Solar Sisters. She earns a commission from the lamp sales, which help to improve her ability to pay for healthcare, education and food for her family. She then repays the cash for the lamps and the cycle starts all over again with a new consignment.

The model will sound familiar to many: it is what has built successful marketing machines like the famous all-women’s make-up and beauty products seller Avon (www.avon.com). Or the other famous direct marketing behemoth, Amway (www.amway.co.uk).

The Solar Sister model is heavily dependent on the success of word-of-mouth to grow:

“What we have found is that the women are the best distribution system for bringing new technology to rural households since they sell through their trusted networks of family, friends and neighbours,” Lucey said. “They use the lamps themselves, and then talk passionately about the benefits: the better light, the money they save by not having to buy kerosene, the amount of time their children are able to study, the cleaner air and safer environment for their kids.”

According to Lucey, the business model “brings solar technology right to the women’s doorstep. The Solar Sister business model developed as a grass-roots solution to the gender-based technology gap. Women make up 70 percent of the rural poor, but are often left out ‘in the dark’ when it comes to technology solutions.”

It is still early days for Solar Sister, which has been in operation for just over a year and now has 107 Solar Sister Entrepreneurs working in 10 teams reaching 34 communities in three countries – Uganda, Rwanda and Sudan. Lucey says the goal is to build a network of 1,500 female entrepreneurs in Africa over the next two years, benefiting over 1 million people.

Apart from the business model and the new technology, there is a radical concept at the heart of Solar Sister: to replicate for electricity generation the distributed and rapid growth that has been seen with mobile phones. In just five years, the availability of mobile phones in Africa increased by 550 percent.

“Distributed energy, such as solar, puts the investment in energy generation rather than transmission, and breaks the problem into smaller, achievable, components that do not have to wait for political processes for implementation,” explains Lucey. “It allows for the possibility that people can solve their own problems rather than wait for government or NGOs to come solve their energy problems for them. Distributed solar has the potential to leap-frog the 20th century grid-based solution, much like mobile phones have done in the telecom industry.”

One of the solar lanterns for sale is manufactured by D.Light Design. Their newest lantern model is called Kiran (http://www.dlightdesign.com/products_kiran_global.php). It sells for US $10 and provides up to eight hours of light on a full battery, its manufacturers say. D.Light Design calls it the “$10 Kerosene Killer” because it believes it has the right mix of price and technology to trump the need to use kerosene lanterns. The lantern gives off a white light powerful enough so people can read, study or do domestic tasks. A solar panel sits on top of the lantern, which is shaped like a drinking thermos with a large carry handle on top.

Other solar lamps/lanterns have been burdened by cost, ranging in price from US $15 to US $30: a prohibitive price for many poor people.

The ubiquity of mobile phone payments in Africa has made it much easier to transfer funds back and forth between the entrepreneurs and Solar Sister. And since its launch, Solar Sister has learned how to change and adapt to local conditions.

“These women are the experts in their local communities of what works and what doesn’t,” Lucey said. “Solar Sister Voila (http://www.solarsister.org/voila-uganda) decided to visit the roadside market stalls at night when shopkeepers were burning kerosene lamps for light. She got their instant attention with the high brightness of her solar powered lamps.

“Solar Sister’s mission is to bring more and more women from the veils of smoke, darkness and anonymity to the forefront of a clean energy revolution.”

Published: April 2011

Resources

1) D.light Design: Their lights use LEDs (light emitting diodes) (http://en.wikipedia.org/wiki/LED_lamp) and are four times brighter than a kerosene lantern according to D.Light Design. Website: www.dlightdesign.com

2) Lighting Africa: Lighting Africa, a joint IFC and World Bank program, is helping develop commercial off-grid lighting markets in Sub-Saharan Africa as part of the World Bank Group’s wider efforts to improve access to energy. Lighting Africa is mobilizing the private sector to build sustainable markets to provide safe, affordable, and modern off-grid lighting to 2.5 million people in Africa by 2012 and to 250 million people by 2030. Website: www.lightingafrica.org

3) Solar Lighting for the Base of the Pyramid – Overview of an Emerging Market, a report by the International Finance Corporation finding Africa will be the world’s largest market for solar portable lights by 2015. The report addresses market trends and statistics at a global level with more detailed analysis for the African market. Website: www.lightingafrica.org/market-intelligence/market-trends-assessment.html

4) How We Made It Africa: A website detailing success stories on businesses investing in Africa and how people are making the most of opportunities on the continent. Website: www.howwemadeitinafrica.com

5) Barefoot College: The College is training women to be solar engineers, developing both useful skills and a new income source. So far, Barefoot College itself has solar electrified some 350 villages across India and dozens more in sub-Saharan Africa and even war-torn Afghanistan. Website: www.barefootcollege.org

6) Solar Power Answers is a one-stop-shop for everything to do with solar power. It has a design manual and guides to the complex world of solar power equipment. Website: www.solar-power-answers.co.uk/index.php

7) Sun King solar lantern: The lantern provides 16 hours of light for a day’s charge. Website: www.greenlightplanet.com/ourusers.html

8) ToughStuff has developed a modular range of affordable solar powered energy solutions to the three main power needs of poor consumers in the developing world – lighting, mobile phones and radios. Website: www.toughstuffonline.com

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.  

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2023