Energy management in agricultural production

While global energy demand continues to rise, the world's fossil energy resources are rapidly depleting. As a result, one of the most important goals has become the effective utilization of energy. In line with this goal, it is critical to implement an energy management system by organizing an energy program with the highest possible efficiency. This system includes activities that aim to continuously improve energy performance, such as energy efficiency, energy audit studies, and activities that necessitate a comprehensive study [1].

Considering the agriculture sector's reliance on the energy sector, as well as the rising costs and negative consequences of using fossil fuels, energy management in this sector is critical. Farmers can enhance earnings while having a good influence on the environment by better understanding farm energy consumption and applying best practices for on-farm energy management [2, 3].

Problems with Agricultural Energy Use

As the world's population continues to rise at an alarming rate, the demand for modern agriculture and the ability to feed enormous numbers of people grows by the day. With rising food consumption, the agriculture sector's energy requirements are likewise rising [4].

Energy is a vital element in production in agriculture. In addition to human and animal power, the agricultural sector uses energy in buildings (lighting, cooling/heating), agricultural operations (tools and machinery for land preparation, irrigation, sowing, fertilisation, harvesting, and transport), and commercial activities (transport, construction, and facility operation). Energy is required in the agricultural industry to pump water for irrigation; to operate agricultural machinery for various agricultural operations during the growth phase, such as sowing, weeding, fertilising, spraying, and harvesting; to transport crops; to cool and dry or process products [5].

The amount of energy used in agricultural production varies significantly depending on the level of development, type of activity, production practices used, location of the production area, and environmental factors like soil and climate [6]. Because of inadequate facilities, restricted access to contemporary technologies, and a greater reliance on manual labour, developing countries frequently confront more serious energy restrictions. Developed countries, on the other hand, are attempting to optimize energy use, minimize emissions, and include renewable energy options. To attain dependable and environmentally acceptable renewable energy alternatives, the energy sector must undergo a thorough transition that includes the use of renewable energy sources. Poor rural infrastructure, restricted biomass utilization, heavy reliance on fossil fuels, reliance on energy for irrigation, and limited access to modern energy are some of the key types of energy problems and challenges in agriculture [5].

Energy use in agriculture is critical for modernizing agricultural practices and increasing productivity [7]. The increase in agricultural productivity that can be achieved through the use of modern energy production cannot be realized due to insufficient use of electrical and mechanical energy in agriculture [8].

All agricultural production must be economically sustainable in order to ensure long-term food security. As one of the most important agricultural inputs, energy is critical to ensuring food security. Efforts to support energy's critical role should be coordinated with efforts to reduce hunger, advance rural development, and improve food security. These efforts should not be viewed as an end in themselves, but rather as an important component of a larger project. Food supply and production are frequently hampered by low quality and limited quantities of available energy [9, 10].

Due to the fact that agriculture also has a negative impact on climate change, concerns about it have increased interest in energy efficiency and usage in agriculture. The majority of the energy used in agricultural activities comes from fossil fuels, which are used in almost all of them. This is a result of various types of farm equipment used, livestock-related methane emissions, farm-related greenhouse gas emissions, and more [11, 12].

The importance of the energy issue is highlighted by the need to use scarce natural resources efficiently, reduce greenhouse gas emissions, reduce energy costs, and increase the competitiveness of the agri-food sector [13]. It is crucial to find sustainable and renewable alternatives for each of these factors, even though there are many direct and indirect energy factors that affect how much energy is consumed overall in agriculture [14].

The energy-agriculture nexus will undoubtedly require significant effort to move forward. Technological, environmental, and social aspects should be further developed and assessed [9]. Reducing input costs and grid load through the use of efficient energy management techniques and renewable energy in agriculture will help address issues with food security [5].

Energy Management

The term "energy management" refers to the measurement, monitoring, planning, and implementation processes used to ensure the best possible use of both the energy resources used and the energy produced. The systematic process of energy management maximizes energy savings while also continuously improving energy performance [15, 16].

Energy management is the use and application of technology in the planning and operation of both energy production and consumption to ensure optimal energy supply and utilization. The primary goals of energy management are resource conservation, budget savings, and climate change prevention, as well as ensuring easy and continuous access to energy for all [17].

Energy efficiency and optimum utilization are critical for achieving sustainable growth, as are many other aspects such as investment regulation and the adoption of appropriate technology. Reducing energy costs and waste without impacting production or quality and with little environmental impact is a basic factor for sustainable development in energy management. Energy management include reducing energy consumption by implementing energy-efficient techniques, as well as determining the proper type of energy and energy tariff for the relevant unit, such as a power plant, a manufacturing plant, a building, or agricultural practices [17, 18].

Energy audits is a critical activity in energy management. It is a systematic technique that aims to balance total energy inputs against total energy usage, as well as to identify all energy flows and justify energy use based on its specific functions. The ultimate goal is to boost energy efficiency, which will lower energy expenditures in the long run, leading to more sustainable economic development. Furthermore, increased energy efficiency would assure energy security as well as environmental preservation [17, 19].

Energy is one of the most important agricultural inputs. From agricultural processes to the execution of diverse economic operations, energy is a key component for meeting fundamental human needs. To feed the world's rising population and satisfy other social and economic goals, agricultural production, processing, and distribution require a substantial amount of energy. Because crop yields and food supply are inextricably related to energy, controlling energy consumption in agriculture is critical [11, 20].

In order to achieve the aims of sustainable agriculture, it is crucial to adopt and maintain a balance between economics and energy demand. The world's less developed nations are attempting to find ways to meet the rising demands for food, clean water, and alternate energy sources while combating climate change [21]. Due to fast population increase, economic and technological development, urbanization, and climate change, energy consumption is rapidly increasing. This increase in energy consumption is expected to raise electricity prices, which would have a direct impact on the agricultural sector due to the high energy demand for diverse agricultural activities. Food prices will rise as a result of the high input costs required to produce food from agriculture, resulting to hunger and poverty and jeopardizing food security, particularly in developing countries. Improved energy management strategies can help to address the intensification of energy usage and high input costs in agriculture [5, 22].

Agriculture needs energy to carry out its activities, but it may also be utilized to produce energy, making energy management a crucial issue given the strategic importance of the agricultural sector. As a result, optimizing consumption, production, and efficiency are all part of energy management in the agriculture industry [23].

The following are the primary goals of energy management in agricultural production [11]:

Ensuring and maintaining optimal energy supply and use throughout the product's life cycle,
Reducing energy costs/waste while maintaining production and quality,
Minimizing environmental impact.

Farmers are being forced to reduce costs through energy efficiency and the use of renewable energy sources by rising energy costs in the agricultural sector. In general, higher energy-related input costs raise the total cost of producing agricultural goods, which lowers farm income [24]. Figure 1 shows an energy pyramid for agricultural applications. This pyramid is a decision-making tool that can be used in a variety of energy-related settings, including agriculture. As one progresses from energy assessment activities to alternative or renewable energy projects, the cost and complexity of this tool rise [11].

Figure 1: Energy Management Pyramid for the Agricultural Activities [24]

The energy pyramid begins with an energy assessment on the farm. Before implementing any concrete measures, the energy assessment allows you to assess your energy use and needs. Energy consumption on the farm can be controlled using energy monitoring, target setting, and energy audit systems. Energy monitoring is accomplished by regularly recording energy performance data from a single part to all parts. After monitoring, the data must be analyzed and an energy audit performed. The energy audit includes activities to determine the measures that can be taken to achieve higher efficiency with less energy in the energy-using system [11]. Due to the scarcity of labor, energy is the most reliable resource for agricultural production, and analyzing the energy required for each process is an important tool [22].

Following that, simple conservation practices must be implemented, followed by energy efficiency practices. Energy efficiency is frequently confused with energy conservation. Energy conservation is the practice of using less energy by altering one's behavior or habits. On a farm, for example, energy is saved by turning off unnecessary lights. Energy efficiency means using less energy to accomplish the same task. Energy efficiency is demonstrated by replacing incandescent bulbs on the farm with LED bulbs. Energy conservation is concerned with limiting use, whereas energy efficiency is concerned with using energy more efficiently [25, 26]. Savings and efficiency improvements have numerous advantages in and of themselves. Opportunities to increase agricultural productivity by implementing innovative techniques and practices must be identified for each crop and ecology. Organic farming, better soil and water management, integrated pest management, and crop fertilization are just a few of the strategies and practices that can assist the agricultural sector in moving toward greater energy efficiency and sustainability [27].

The final step is to invest in and use renewable energy. While energy efficiency measures are frequently the quickest and cheapest way to reduce farm energy costs, it is also critical to consider renewable energy generation systems to generate energy to power many agricultural activities. The use of renewable energy sources in agricultural activities will result in improved energy use, food security, and environmental change, all of which will benefit ecological farming goals [5].

Monitoring the performance of energy used in agricultural activities through the adoption of an energy management system in the agricultural sector can promote higher efficiency and capacity utilization, reduced resource waste and pollution, and lower operation and maintenance costs. As a result, energy and product prices can be cut while value creation increases, resulting in stable economic growth. Uninterrupted economic growth mixed with environmental conservation provides the foundation for human society's secure and sustainable development [3, 17].

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