Hybrid renewable energy supply for rural healthcare facilities: An approach to quality healthcare delivery

Adedoja

Energy Science & Engineering

et al. 2019

Presented in this study is an optimal hybrid renewable off‐grid energy system model that supplies a typical rural healthcare center across the six regions in Nigeria. A technical and economic evaluation was carried out to identify the optimal off‐grid hybrid energy system combination based on photovoltaic (PV), wind, diesel generator and battery. Due to governments’ fuel subsidy in many developing countries, the pump price of fuel is reduced and not a true reflection of what is obtainable in a deregulated market. In order to comprehensively capture the reality, the study considered the effect of subsidy removal by carrying out a sensitivity analysis on the fuel pump price. Therefore, the impact of a change in diesel fuel pump price and interest rates on the economic performance criteria of the optimal configuration is explored. Results show that across all the locations considered, PV/diesel/battery system is the most economically viable with a net present cost and renewable fraction (RF) ranging between $12 779 and $13 646 and 70%‐80% respectively. The cost of energy (COE) is also estimated to range between 0.507 and 0.542 $/kWh.

Section: Operation and Maintenancesupporting

confidence: 86%

“…This include $3200/kW, 17 $4250/kW. The generator considered in the paper has the general specifications as provided in the HOMER software.…”

Section: System Componentsmentioning

confidence: 99%

See 1 more Smart Citation

Off‐grid hybrid renewable energy system for rural healthcare centers: A case study in Nigeria

Adedoja

Energy Science & Engineering

et al. 2019

Energy Science & Engineering

“…Hence, the optimal system has a minimum of NPC and COE. 18 In the literature, there are several studies aimed for the optimal design of HMGs, which benefit from RESs in different regions of the world, especially in developing countries. [19][20][21][22] Authors of 19 proposed two different energy systems in two locations of Sabah, Malaysia.…”

Section: Introductionmentioning

confidence: 99%

Techno‐economic comparative study of hybrid microgrids in eight climate zones of Iran

Sadat

Faraji

Babaei

et al. 2020

Many efforts have been made to increase the utilization of renewable energy resources (RESs) in Iran. This paper aimed to evaluate the techno‐economic performance of an introduced hybrid microgrid (HMG) in eight climate zones of Iran. Therefore, ten cities are selected from the eight climate conditions of Iran. An electricity pricing strategy is also implemented according to the electricity tariffs defined by the Ministry of Energy (MOE) of Iran. The proposed electricity pricing strategy is applied to the HOMER software for investigating the optimal system configuration, RES electricity generation, and the economics of each understudy city. Optimization results indicate that Urmia (in moderate and rainy climate zone) has the least net present cost (NPC) (−5839$) and levelized cost of energy (COE) (−0.0122 $/kWh), whereas Golestan (in semimoderate and rainy climate zone) has the highest NPC (4520 $) and COE (0.012 $/kWh). It is shown that the combination of photovoltaic (PV)/wind turbine (WT)/converter in the grid‐connected operation mode is the most economical configuration. Moreover, the cities with higher potentials of wind speed and solar irradiance have lower NPC and COE. It is concluded that the utilization of the battery energy storage (BES) is technically and economically infeasible for all eight climate zones, even if the stored electricity is sold to the grid. Two sensitivity analyses are conducted to the electricity feed‐in‐tariff (FiT) and solar module price, respectively. The first sensitivity analysis indicates that by increasing FiT, more contribution of RESs is seen, which leads to lower COE and NPC. Furthermore, the two cities of Urmia and Yazd have the highest NPC and COE reductions. The second sensitivity analysis studies the module price impacts on the NPC and COE of each understudy city. It is revealed that the PV module price has a considerable effect on NPC and COE. However, this effect is more significant in some cities such as Bam, where a linear relationship is seen between the module price and economic results (NPC and COE).

Energy Sources, Part A: Recovery, Utilization, and Environmenta

“…Olatomiwa et al (Olatomiwa, Mekhilef, and Ohunakin 2016) carried out the potential of renewable energy sources across the six geopolitical zones of Nigeria, considering the techno-economic feasibility of using PV/wind/diesel and battery as storage to electrify rural health facilities within the selected regions using HOMER software. Adeyeye et al (Olatomiwa et al 2018), presented PV/diesel and battery hybrid renewable energy system using HOMER to power a remote health facility. Usman and Gidado (Adeyeye, Tsado, and Olatomiwa 2018), carried out feasibility analysis of a grid connected PV/wind options f0r rural health care using HOMER software.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic feasibility assessment of a solar-biomass-diesel energy system for a remote rural health facility in Nigeria

Achirgbenda

Kuhe

Okoli

2020

This paper explores the feasibility of supplying power to a remote hospital in Vandeikya local government area of Benue state where the facility is strictly run by diesel generator. The average hourly electrical load demand data for the hospital was obtained by measuring electricity consumption from the power house using digital owl meter (CM 199). The annual average insolation for Vandeikya is 4.92 kWh/m 2 /d obtained from the National Renewable Energy Laboratory database. The simulation was carried out using HOMER Pro (Hybrid Optimization Model for Multiple Energy Resources version 3.13.8). The average hourly electricity load demand data; cost of components and sizes; average annual insolation data, serve as input into the software. The results gave a net present cost (NPC) of ₦718,308,000.00 (Note:$ 1 equals ₦ 386.32 Naira as at 6 th July, 2020) as compared to diesel only with a cost of ₦9,060,974,000.00; the lifetime of the project considered is 25 years and an assumed real interest rate of 10% per annum, while the system offers a payback period of 1 year. The optimal system configuration is the system with diesel genset (300 kW), generic 500 kW biogas genset, generic flat plate PV (300 kW), generic 1kWh lead acid, and system converter (300 kW). The system has a yearly excess electricity of 411,771 kWh/yr which can be sold out and has no unmet load. It greatly reduced greenhouse gas (GHG) emission. The hybrid PV/diesel/biomass gasifier system makes economic sense and is technically viable for Mbaakon hospital and those with similar load and weather conditions.