Techno-Economic and Environmental Analysis of Energy Scenarios in Ghana

Abstract

The electricity potential in Ghana has become a huge challenge to the nation, which increases the country's economic growth and reduces Nation's development. The study highlights the trends on the power grid of the energy potential for the past ten years' impact regarding the directions on the power grid, and to determine the economic potential viabilities couples with the sustainability of renewable energy sources in Ghana. The study relied on substantial reviewed literature and revealed that Ghana's energy generation has passed through multiple stages, started from diesel generator supply systems owned by industries and factories to hydroelectricity, thermal power electricity powered by natural gas or crude oil, and solar electricity. The study showed that as of December 2017, Ghana had installed a total capacity of 4398.6 MW comprising Hydro, Thermal, and Solar Plants. Out of the full power, Hydropower generates 1580 MW representing 35.9%, Thermal generates 2796 MW, which also represents 63.6%, while 22.6 MW capacity represents 0.5%. The Long-range Energy Alternatives Planning system (LEAP) tools were employed to consider three different scenarios: energy demand, cost-benefit, and carbon limitation. 2018 was considered as the base year and 2048 as the end year. The results show that 17,800 GWh was estimated as energy demand at base year while 44,000 GWh at end year of 7% annual growth rate. The share of renewable power plants was almost zero at the current account. The share of solar thermal plants may reach 90% due to direct cost and externalities. The study adopted one-hundred-year direct GWP at the point of emissions to compare the Mitigation (MITG) and Reference (REF) scenarios. The model indicated 1.3 Million tons of CO 2 saving and 4.0 billion U.S. dollars saving with a 5% discount rate in power generation until 2048, if only the country could afford to develop its generation system with the high deployment of RETs, additional benefits in the form of a sustainable safety environment and less emission carbon would be achieved in the next 30 years.

Technoeconomic Evaluation of Electricity Generation from Concentrated Solar Power Technologies in Ghana

“…Journal of Energy A feed-in-tariff of 59.7750 Ghana Pesewas per kWh equivalent to USD 0.151/kWh (exchange rate of 31 August 2016: $1 = GH n c 3:9476) was obtained from the 2016 PURC feed-in-tariff rates applicable to renewable energy projects [75]. There is also a carbon credit of $15/tonne [76], which when incorporated by policymakers would save the country a lot of cost. Table 7 presents the economic parameters and other economic considerations that were used for the various calculations.…”

Low-carbon development mechanism of energy industry from the perspective of carbon neutralization

“…The global energy economy, which is based on coal, is at a turning point towards a low-carbon economic system based on new energy consumption, and is also at a critical moment from industrial civilization to ecological civilization. 18 New energy has become a commanding peak of sustained and rapid economic development in various countries. 19 Scholars of energy mainly use econometric methods to study energy and economic issues, which are mainly divided into three stages.…”