Available via license: CC BY 3.0
Content may be subject to copyright.
IOP Conference Series: Earth and Environmental Science
PAPER • OPEN ACCESS
Key Barriers to the Implementation of Solar
Energy in Nigeria: A Critical Analysis
To cite this article: D Abdullahi et al 2017 IOP Conf. Ser.: Earth Environ. Sci. 83 012015
View the article online for updates and enhancements.
Related content
CDM and solar energy in India: Issues and
concerns
Keshav C Das and V Sharma
-
New initiatives in education-
Supporting science in developing
countries using open technologies
Enrique Canessa, Marco Zennaro and
Carlo Fonda
-
This content was downloaded from IP address 179.61.161.123 on 09/09/2017 at 19:03
1
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution
of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Published under licence by IOP Publishing Ltd
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
Key Barriers to the Implementation of Solar Energy in
Nigeria: A Critical Analysis
D Abdullahi1, S Suresh, S Renukappa and D Oloke
1 School of Architecture and Built Environment, Faculty of Science and Engineering,
University of Wolverhampton, WV1 1LY
E-mail: D.Abdullahi@wlv.ac.uk; S.Subashini@wlv.ac.uk;
Suresh.Renukappa@wlv.ac.uk; D.A.Oloke@wlv.ac.uk
Abstract: Nigeria, potentially, has abundant sunshine throughout the year, making it full thirst
for solar energy generation. Even though, the country’s solar energy projects have not realised
a fair result over the years, due to many barriers associated with initiatives implementation.
Therefore, the entire power sector remains incapacitated to generate, transmit and distribute a
clean, affordable and sustainable energy to assist economic growth. The research integrated
five African counterpart’s solar energy initiatives, barriers, policies and strategies adopted as a
lesson learned to Nigeria. Inadequate solar initiative's research, lack of technological know-
how, short-term policies, lack of awareness and political instability are the major barriers that
made the implementation of solar initiatives almost impossible in Nigeria. The shock of the
barriers therefore, constitutes a major negative contribution to the crippling of the power sector
in the state. Future research will concentrate on initiatives for mitigating solar and other
renewable energy barriers.
1. Introduction
Solar energy contributes a tiny fraction of power generation in Nigeria, although, the country receives
maximum sunlight exposure, potential for solar PV. Nigeria is in the solar belt, which heightens its
solar potential but sadly, the opportunities for harnessing the renewable energies remained narrow and
unpractical compare to the conventional electricity [1]
Traditionally, solar energy in the country has predominantly been used for various activities by
employing the open to the sun method, mostly in the rural communities. Solar electricity generation,
on the other hand, emerged approximately two decades ago and it has seen a steady growth [2]. The
primary drivers for the solar power uptake in the country are attributed to research centres and energy
institutions, initiatives apart from the huge electricity production deficits. Besides the learning and
research institutions, government and international agencies' activities have led to the development of
the largest solar-PV plants across the country [3]. The major aims for the various solar electricity
generation initiatives include the enhancement of water supply and the maintenance of clinics and
healthcare facilities in the rural areas [4]
2. Solar photovoltaic (PV)
Nigeria is blessed with the abundance of solar radiation throughout the year. However, according to [5]
only the exact utilisable solar resource base, formerly available in the state is unknown despite the
huge financial commitment towards ensuring sustainable electricity in the country. They further added
that Nigeria lacks the proper equipment and infrastructure to conduct solar radiation measurement. At
the moment, Nigeria operates about thirty (30) measuring stations which are managed by the Nigerian
2
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
Meteorological Agency (NMA). These are airport based and the data from these stations are used to
calculate an estimate probability for solar radiation in the country [6]. They are little local research and
development activities related to solar energy in Nigeria. According to surveys conducted by the
Energy Commission of Nigeria (ECN) in 1999 and, it was gathered that there are about 44 companies
and research centres responsible for the importation and installation of photovoltaic systems in Nigeria.
Out of these, only one company (Exide Batteries Nigeria Limited) produces batteries that are used for
photovoltaic solar systems [6].
3. Solar energy potential
Nigeria is located in the solar belt with an average sunshine of up to 9 hours per day, equivalent to 5.5
kWhm-2 days-1 degrees of solar radiation are seen almost throughout the year [1]; [7]. The
availability of massive radiations combined with the developments in the photovoltaic technologies
makes it clear that huge amounts of electricity can be generated and utilised to combat the country’s
electricity crises that has become an obstacle to economic development [8]. [8], argued that the solar
PV prices have been in steady decline in the recent years, dropping to approximately 50% compared to
when it was first introduced years ago. This phenomenon was attributed to ramping up of solar PV
productions in China and the technological breakthroughs experienced in the field [2].
Given the large amounts of incident radiation, installing solar panels on at least one percent of the
country’s geography can easily generate enough electricity to outdo the amount currently produced in
the country [9]. Annually, the state receives up to 115, 000 times its total energy production through
solar energy. This fact highlights the immense amount of energy which the country can benefit from
the solar energy, bearing in mind that currently, solar energy contributes less than one percent of the
total power generation [7]
Solar energy is the most stable and reliable source of energy that can be harnessed for the benefit of
domestic and commercial purposes [9]. They further argued that, in line with the objectives of cutting
down global warming through limiting the use of carbon fossils, solar energy has emerged to be a
strategic component for achieving the sustainable development goals. Not only it is environmentally
friendly, but it is also free and available in Nigeria. Electricity is not only produced cheaply, but also
environmentally friendly [10].
4. Policies adopted
The national energy policy of 2003 approved by the federal government of Nigeria was aimed at
leveraging the latent potential in power generation [11]. The plan highlights the need to develop
energy using sustainable and environmentally friendly sources. The policy emphasised on electricity
generation with the use of solar power among other renewable energy sources [12]. Regarding
stakeholder composition in the energy production, the policy is much oriented towards the integration
of public private partnership (PPP). Essentially, the policy based on hope that the private sector will
take up the production, acquisition and distribution of renewable energy sources in the country [3].
The broad objectives of the policy include the generation of electricity in the rural areas, the creation
of employment opportunities, environmental protection and mitigation of climate change and the
diversification of energy production in the country. Besides other objectives, is to develop the
country’s solar utilisation capabilities [1]; [13].
The electric power sector reform Act of 2005 is the second policy formulated with aims to overcome
the historic energy crisis in Nigeria [14]. The plan’s principal objective was the liberalisation of the
electricity generation industry to allow private investors to take part in energy generation, transmission
and distribution [15]. The country’s planners envision that by 2020 the country will be the 20th largest
economy in the world. Bearing in mind the fact that power generation comes second to political
goodwill in a country’s development, the planners had to align energy production to their vision. Solar
energy was therefore slated to be the major boost to the country’s developments [16].
5. Impact of the policies
The policies highlighted above have a huge impact as far as solar energy generation in Nigeria is
concerned. For instance, the Power Reform Act of 2005 has allowed private investors to get involved
3
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
in the power generation exercises [17]. This measure has enabled the country to achieve some of its
short-term energy objectives with rural areas being the primary beneficiaries [16]. The aligning of
solar power generation with the country’s Vision 2020 has also ensured that the program features in
most government plans. For example, in parliamentary procedure to bring down the cost of the new
textiles, the Nigerian government has removed duty on solar modules being imported into the country
[13]
6. Lessons from five African countries
Apart from Nigeria, the other countries in Africa which have successfully adopted solar PV Panels
include Morocco, South Africa, Ghana, Chad, and Kenya. Morocco so far has one of the most
ambitious solar projects in the world [18] The Moroccan government sets some policies to direct their
energy industry: The National plan of priority actions (PNAP) and the National Energy Strategy
(NES). The NES major objective is to ensure that 20% of the country’s energy needs is met through
renewable energies [19]. Similarly, other related goal was to ensure that the country attains an energy
efficiency of 20% by 2020 and a further 15 % by the dawn of 2030 [20] The PNAP policy on the other
hand aimed at diversifying the fuel varieties and their sources. Subsequently, other policy, is the
provision of energy in all sectors and at relatively competitive prices. The renewable promotion was
another major objective aimed at heightening energy efficiency [20]. Finally, a policy was also aimed
at integrating markets from the euro-Mediterranean region.
Morocco is on track towards the achievement of its energy objectives with the generation of 500MW
of solar electricity having been initiated. The beginning stage of the project amounting to 160MW was
completed in February 2016 with the other phases being scheduled to be finalised in 2018 [21].
South Africa, on the other hand, has also developed some policies to direct its renewable energy
generating sector. South Africa’s most important energy policy is the integrated resource plan [22]
The plan outlines the country’s aims to develop up to 9600 MW of solar power by the dawn of 2030.
Resultantly, the solar electricity generation in the country has moved from nil to a point where it has
provided a significant contribution to the national grid [23]. Furthermore, the rapid developments in
the industry can be imputed to the friendly policies which contributed to the liberalisation of the sector.
In combination with the relatively affordable Solar PVs, the industry has witnessed tremendous
growth [23].
Ghana has also made strides towards the development of its solar energy generation capacity. The
government’s resolution is captured in its policies which include the national energy policy of 2010,
aimed at introducing public-private partnership in the development of infrastructure [24]. The other
policy was the Ghana sustainable energy for all action plan 2012 and was aimed at the development of
renewable energy technologies. The government also developed a strategic national energy plan for
2006 to 2020 [24]. The plan as the title insinuates, was to outline the role of renewables in the national
grid. The various policies set by the government have had a positive impact on the development of
renewable in the country and specifically solar power generation. For instance, the country could add
20MW of solar energy to its national grid [25].
To achieve the SDGs, Chad initiated a myriad of measures towards the generation of power. One
important renewable energy policy formulated by the country’s government is the system of
renewable [26]. The policy is aimed at providing the necessary framework for developing renewable
energy schemes. There has been a great success as far as the attainment of renewable energy goals is
concerned. For instance, recently, the country benefited from a sustainable energy fund for Africa loan
aimed at the development of a 40MW solar plant in the country [27].
Kenya is optimally located along the equator to access maximum sunlight throughout the year.
According to [28], the country experiences up to 300 days of sunlight within a year this highlighting
the potential that it has regard to the generation of solar energy. The government has put in place some
policies to ensure the seamless development of the renewable energy industry [28]. The policies
include scaling up renewable energy program put into effects the elimination of import duties and
value added tax (VAT) on all renewable energy-related imports. The government has also introduced a
feed-in tariff to help the uptake of the energy produced from renewable sources such as solar power.
The measures taken by the government have generated positive results as attributed to the proliferation
4
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
of solar firms in the country [29]. Despite the potential of renewable energy, especially solar PV, in
Africa, particularly Nigeria, the implementation suffers from various challenges which is further
discussed.
7. Key barriers to solar initiatives in Nigeria
Despite the many benefits that can be accrued from the use of solar energy potential and uses is still
very low. The major impediment to the technology adoption are series of barriers which makes it hard
to implement.
Table 1: Barriers to Solar energy implementation in Nigeria
Barriers
category
Barriers
Remarks
Sources
Technical
Barriers
Lack of skilled personnel, lack
of code of standard, lack of
maintenance and operation, lack
of training facilities and
entrepreneur’s development
mechanism, lack of Reliability.
The barriers lead to poor plans, poor
standard, constraints of the
competitive market, inadequate
knowledge to know-how about the
technology and risk acceptance. All
these barriers resulted in technology
locked -up.
[1];
[30];
[31]
Social;
Cultural
Behaviour
Lack of consumer awareness
about the product, lack of
understanding of benefit of solar
PV and public resistance to
chance for new technology.
The barrier, affect the market
projection negatively, cultural and
religious faith controversies towards
economic development and
sustainability.
[32];
[33];
[34]
Economic/
Financial
Barriers
Lack of access to capital, credit
to consumers and financial
instrument. Lack of support to R
& D, high interest rate, import
duties subsidies to support local
manufacturing.
At the early stage, solar projects need
incentives to encourage
entrepreneurs. The barriers make it
difficult to adopt and sustain due to
financial constraints.
[13];
[17];
[35]
Institution
al/
Legal
barriers
Institutional barriers, legal
framework, regulatory issues,
non-integration of energy mix,
non-participation of private
sector, poor R & D culture and
stakeholder’s non-interference.
The barriers cause risk of uncertainty
in support of solar energy, lobbies
against RET, poor communication
mechanism to reach the institutional
policy makers for improvement and
negative perception about the
technology.
[7]; [36]
Political/
Policies
Issues
Lack of long term policies, lack
of political will to diversify into
clean energy, constantly
changing of government and re-
shuffling of institutions.
These barriers serve as a deterrent to
future planning for solar and other
renewable energy adoption and
sustainability. There is the fear of
uncertainty in government.
[1]; [3];
[30]
Market
Distortions
Issues
Trade barrier for new product,
energy sector controlled, lack of
access to diversified technology,
lack of facilities and backup
technology, non-market oriented
research for solar energy
technology and application.
The barriers cause hindrance to
market penetration and hence new
technology failed at some point.
[3] [37]
5
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
Apart from awareness, the workforce to support and technical know-how to install the solar panels is
still lacking. The necessary expertise to assemble and manage the solar facilities in existence has
further composed the issue. Currently, Nigeria relies on experts from other developed countries to run
its solar generation plants. This lack of capacity increases the maintenance cost of the projects. This
fact impedes the technology’s uptake even in cases where the end users are aware of its adverse effect.
Despite the major reduction in the price of solar PVs, the lack of financial and fiscal incentives present
a challenge to the stakeholders. Essentially, the development of a solar firm requires massive amounts
of money which may not be easily available in Nigerian situation [16].
Solar generation also suffers from the insufficient institutional framework. Apparently, the country’s
energy regulation Commission (NERC), is also mandated to oversee the licensing of electricity plants
that generate at least 1MW. Incidentally, renewable energy plants which produce less than 1MW are
not adequately regulated. The intermittent nature of resources leaves the stakeholders with operational
challenges. Renewable energy sources are cyclic in character, with seasons of high supply and others
of low supply. Therefore, the lack of storage makes the operation of solar systems, complex [17].
8. Findings
It is evident that Africa in general and Nigeria to be precise have huge potentials as far as the
generation of clean energy is concerned. It is, however, disappointing to note that solar power which is
the most efficient and readily available resource is least utilised with most countries covered having
below one percent solar power generation. The major impediments to the uptake include the lack of
sufficient finance, technical know-how and general awareness [38].
9. Recommendations
As far as the improvement of solar energy production in Nigeria is concerned, creating awareness
concerning its advantages will go a long way towards its adoption. The Nigerian government should,
therefore, put in place a policy that encourages the sensitisation and awareness initiatives. Besides
creating awareness, the government should also introduce in the country’s learning institutions,
courses on the handling of solar panels. Such a policy will aid in the development of the necessary
workforce capacity. A special fund should also be put in place to subsidise the raw materials needed
for the installation and production of solar panels [39]. Future work of this research will proffer a
framework to mitigate challenges for solar energy initiatives in Nigeria.
10. Conclusion
Nigeria has not taken advantage of its potential in the renewable energy generation. Given the large
amounts of incident radiation, the country can greatly benefit if the necessary resources are committed
towards subsidised opportunity for socioeconomic development. It is, therefore, imperative upon the
stakeholders to put in place policies that will create an enabling environment for solar energy
production. The stakeholders for energies, especially solar, can learn from other African countries
such as South Africa, Kenya and Morocco who to some extent have yielded positive result. The
Nigerian government needs to address the challenges also by integrating research recommendations
from various research more especially the institutional and technical barriers.
11. References
[1] Sambo, A.S. and Bala, E.J., 2012. Penetration of Solar Photovoltaic into Nigeria’s Energy
Supply Mix. In World Renewable Energy Forum (WREF).
[2] Osinowo, A.A., Okogbue, E.C., Ogungbenro, S.B. & Fashanu, O. 2015, "Analysis of Global
Solar Irradiance over Climatic Zones in Nigeria for Solar Energy Applications", Journal of
Solar Energy, 2015, pp. 1-9.
[3] Ohunakin, O.S., Adaramola, M.S., Oyewola, O.M. & Fagbenle, R.O. 2014, "Solar energy
applications and development in Nigeria: Drivers and barriers", Renewable and Sustainable
Energy Reviews, 32, pp. 294-301.
6
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
[4] Oseni, M.O., 2012. Improving households’ access to electricity and energy consumption pattern
in Nigeria: Renewable energy alternative. Renewable and Sustainable Energy Reviews, 16 (6),
pp.3967-3974.
[5] Emodi, N.V. 2015, "Policy Scenarios for Low Carbon Energy Development in Nigeria", afore,
pp. 237-237.
[6] Udoakah N. Y.-O. 2014. Sustainably meeting the energy needs of Nigeria: The renewable
options. IEEE International Conference, IEEE, pp. 326-332.
[7] Aliyu, A.S., Dada, J.O. & Adam, I.K. 2015, "Current status and future prospects of renewable
energy in Nigeria", Renewable and Sustainable Energy Reviews, (48), pp. 336-346.
[8] Amankwah‐Amoah, J., 2015. Solar Energy in Sub‐Saharan Africa: The Challenges and
Opportunities of Technological Leapfrogging. Thunderbird International Business Review, 57
(1), pp.15-31.
[9] Ozoegwu, C.G., Mgbemene, C.A. & Ozor, P.A. 2017, "The status of solar energy integration
and policy in Nigeria", Renewable and Sustainable Energy Reviews, 70, pp. 457-471.
[10] Masini, A. and Menichetti, E., 2012. The impact of behavioural factors in the renewable energy
investment decision making process: Conceptual framework and empirical findings. Energy
Policy, 40, pp.28-38.
[11] Adeyanju, A.A. 2011, "Solar Thermal Energy Technologies in Nigeria", Research Journal of
Applied Sciences, 6 (7), pp. 451-456.
[12] Ajayi, O.O., Ohijeagbon, O.D., Nwadialo, C.E. & Olasope, O. 2014, "New model to estimate
daily global solar radiation over Nigeria", Sustainable Energy Technologies and Assessments, 5,
pp. 28-36.
[13] Shaaban M, Petinrin, J. O. 2014. Renewable energy potentials in Nigeria: Meeting rural energy
needs. Renewable and Sustainable Energy Reviews, 29:72-84.
[14] Kieran, P. 2014. Review of the reform and the Privatization of Power Sector in Nigeria:
Solution for Growing Economies. Available at: http://www.energynet.co.uk/webfm_send/427.
[Accessed 14 February 2017].
[15] Emetere, M.E. & Akinyemi, M.L. 2016, "Prospects of solar energy in the coastal areas of
Nigeria", AIP Conference Proceedings, 1705 (1).
[16] Oyedepo, S.O., 2012. Energy and sustainable development in Nigeria: the way forward. Energy,
Sustainability and Society, 2 (1), p.15.
[17] Emodi, N.V. and Boo, K.J., 2015. Sustainable energy development in Nigeria: Current status
and policy options. Renewable and Sustainable Energy Reviews, 51, pp.356-381.
[18] Humphreys, G. 2014, "Harnessing Africa's untapped solar energy potential for health", Bulletin
of the World Health Organization, 92 (2), pp. 82.
[19] Writer, G. 2016, Solar energy in Africa comes of age as costs reach grid parity, The Financial
Times Limited, London.
[20] Kousksou, T., Allouhi, A., Belattar, M., Jamil, A., El Rhafiki, T., Arid, A. and Zeraouli, Y.,
2015. Renewable energy potential and national policy directions for sustainable development in
Morocco. Renewable and Sustainable Energy Reviews, 47, pp.46-57.
[21] Nfaoui, H. and Sayigh, A., 2017. Renewable Energy in South of Morocco and Prospects. In
Mediterranean Green Buildings & Renewable Energy (pp. 667-679). Springer International
Publishing.
[22] Donev, G., van Sark, W.G.J.H.M., Blok, K. & Dintchev, O. 2012, "Solar water heating potential
in South Africa in dynamic energy market conditions", Renewable and Sustainable Energy
Reviews, 16 (5), pp. 3002.
[23] Dekker, J., Nthontho, M., Chowdhury, S. and Chowdhury, S.P., 2012. Economic analysis of
PV/diesel hybrid power systems in different climatic zones of South Africa. International
Journal of Electrical Power & Energy Systems, 40 (1), pp.104-112.
[24] Atsu, D., Agyemang, E.O. & Tsike, S.A.K. 2016, "Solar electricity development and policy
support in Ghana", Renewable and Sustainable Energy Reviews, 53, pp. 792-800.
7
1234567890
2nd International Conference on Green Energy Technology (ICGET 2017) IOP Publishing
IOP Conf. Series: Earth and Environmental Science 83 (2017) 012015 doi :10.1088/1755-1315/83/1/012015
[25] Asumadu-Sarkodie, S. and Owusu, P.A., 2016. The potential and economic viability of solar
photovoltaic power in Ghana. Energy sources, Part A: Recovery, utilization, and environmental
effects, 38 (5), pp.709-716.
[26] AfDB supports development of Chad's Starsol PV 2015, Euromoney Institutional Investor PLC,
London.
[27] Komendantova, N., Patt, A., Barras, L. and Battaglini, A., 2012. Perception of risks in
renewable energy projects: The case of concentrated solar power in North Africa. Energy Policy,
40, pp.103-109.
[28] Ondraczek, J., 2014. Are we there yet? Improving solar PV economics and power planning in
developing countries: The case of Kenya. Renewable and Sustainable Energy Reviews, 30,
pp.604-615.
[29] Newell, P., Phillips, J., Pueyo, A., Kirumba, E., Ozor, N. and Urama, K., 2014. The political
economy of low carbon energy in Kenya. IDS Working Papers, 2014 (445), pp.1-38.
[30] Painuly, J.P. 2001, "Barriers to renewable energy penetration; a framework for
analysis", Renewable Energy, vol. 24, no. 1, pp. 73-89.
[30] Luthra, S., Kumar, S., Garg, D. & Haleem, A. 2015, "Barriers to renewable/sustainable energy
technologies adoption: Indian perspective", Renewable and Sustainable Energy Reviews, vol.
41, pp. 762-776.
[31] Pasqualetti, M.J. 2011, "Social Barriers to Renewable Energy Landscapes", Geographical
Review, vol. 101, no. 2, pp. 201-223.
[32] Pollmann, O., Podruzsik, S. and Fehér, O., 2014. Social acceptance of renewable energy: Some
examples from Europe and Developing Africa. Society and Economy, 36 (2), pp. 217-231.
[33] Akinwale, Y.O., Ogundari, I.O., Ilevbare, O.E. and Adepoju, A.O., 2014. A Descriptive
Analysis of Public Understanding and Attitudes of Renewable Energy Resources towards
Energy Access and Development in Nigeria. International Journal of Energy Economics and
Policy, 4 (4), pp. 636-646.
[34] Kar, S.K. & Sharma, A. 2015, "Wind power developments in India", Renewable and
Sustainable Energy Reviews, 48 pp. 264-275.
[35] Charles, A., 2014. How is 100% renewable energy possible in Nigeria? Global Energy Network
Institute (GENI), 1 (619), pp. 595-0139.
[36] Fagbenle, R.O., Katende, J., Ajayi, O.O. & Okeniyi, J.O. 2011, "Assessment of wind energy
potential of two sites in North-East, Nigeria", Renewable Energy, 36 (4) pp. 1277-1283.
[37] Bazilian, M., Nussbaumer, P., Rogner, H.H., Brew-Hammond, A., Foster, V., Pachauri, S.,
Williams, E., Howells, M., Niyongabo, P., Musaba, L. and Gallachóir, B.Ó., 2012. Energy
access scenarios to 2030 for the power sector in sub-Saharan Africa. Utilities Policy, 20 (1),
pp.1-16.
[38] Timilsina, G.R., Kurdgelashvili, L. and Narbel, P.A., 2012. Solar energy: Markets, economics
and policies. Renewable and Sustainable Energy Reviews, 16 (1), pp.449-465.