Renewable Energy Deployment and COVID-19 Measures for Sustainable Development

: The main goal of this study is to evaluate the impact of restrictive measures introduced in connection with COVID-19 on consumption in renewable energy markets. The study will be based on the hypothesis that similar changes in human behavior can be expected in the future with the further spread of COVID-19 and/or the introduction of additional quarantine measures around the world. The analysis also yielded additional results. The strongest reductions in energy generation occurred in countries with a high percentage (more than 80%) of urban population (Brazil, USA, the United Kingdom and Germany). This study uses two models created with the Keras Long Short-Term Memory (Keras LSTM) Model, and 76 and 10 parameters are involved. This article suggests that various restrictive strategies reduced the sustainable demand for renewable energy and led to a drop in economic growth, slowing the growth of COVID-19 infections in 2020. It is unknown to what extent the observed slowdown in the spread from March 2020 to September 2020 due to the policy’s impact and not the interaction between the virus and the external environment. All renewable energy producers decreased the volume of renewable energy market supply in 2020 (except China).


Introduction
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This article studies the renewable energy supply and COVID-19 measures based on official statistics of the World Health Organization (WHO) and British Petroleum (BP) on the energy and virus spread around the world.
This article quantifies the impact of various strategies adopted worldwide against the spread of COVID-19, such as business closures and face masks. Policies directly affect the spread of COVID-19 (for example, the requirement of a mask) and indirectly affect its spread by changing people's behavior (for example, the order to stay at home). The author's model provides a framework for identifying the causality of the increase or decrease in COVID-19 cases and deaths due to three factors: (1) the political effect, (2) the framing effect through behavior and (3) the rational behavioral effect.
The novelty of this work is the effect of COVID-19 measures on renewable energy generation between 2020 and 2025. This paper's importance is in the analysis of COVID-19 effects on consumption in renewable energy markets. The main goal of this study is to evaluate the impact of restrictive measures introduced in connection with COVID-19 on consumption and, accordingly, on renewable generation. There are many studies related to renewable energy deployment [1][2][3][4][5]. Nonetheless, little research exists on the implementation of COVID-19 measures for sustainable development. Most of the available literature concerns only with the influence that renewable energy might have on sustainability without adequately addressing the economic impacts [3]. Few references are dealing with this impact, such as comparing the influence of COVID-19 [4,5] or proposing potential trade-offs among economic objectives considering different measures types [3].
The methodology depends on the theoretical innovation approach of LSTM models that emphasize the relationship between structural changes in different segments of the financial market [2]. Experts note that the relationship between market segments is often unstable. Any change in energy prices caused by economic growth fluctuations complicates the choice of an optimal sustainable transit strategy [2]. This paper includes empirical research that is reliable when selecting articles with high accuracy. Google Scholar and SCOPUS databases were used, a one-year period was included in the analysis (1 January 2020-31 December 2020), and keywords (COVID-19; renewable energy) were used for selecting articles, where a total of 15,700 were obtained. The final list of works includes 12 selected papers.
This paper contributes to the literature in that it fills the theoretical gap in the approach for the analysis of COVID-19 effects on global sustainable growth. The empirical analysis can become the first step for understanding the renewable energy deployment and COVID-19 measures for sustainable development.
Further research is needed to better understand the direct impacts that COVID-19 has on measures for sustainable development, particularly sustainability. The main goal of this study is to evaluate the impact of restrictive measures introduced in connection with COVID-19 on consumption and, accordingly, on renewable generation.

Literature Review
The COVID-19 pandemic began with the first discoveries of pneumonia of unknown origin by locals at the end of December 2019 in Wuhan. China informed the World Health Organization (WHO) about an unknown pneumonia disease outbreak on 31 December 2019. The WHO announced that the outbreak had become a pandemic on 11 March 2020. Afterward, many countries began to impose quarantine regimes or restrict citizens' movement. The decision to introduce restrictions against the COVID-19 pandemic is a classic example of making decisions in the face of uncertainty [1,2].
The impact of COVID-19 and its figures on the population is evident, but it should be emphasized that many people will not suffer from mental disorders. However, a significant percentage will experience intense reactions, mainly in the form of fear of contagion due to the quarantine's extension, the loss of loved ones, or because of the economic crisis. Authorities depend on decision-making problems and, correspondingly, have time-varying risk preferences, which indicates that persons make decisions about anti-COVID-19 measures based on the potential value of deaths instead of on the end result [3,4].
This paper fills the gap in the body of knowledge about two effects. The presence of the COVID-19 impact on renewable energy production is proved in highly developed countries (USA, UK and Germany) and the classic COVID-19 effect on renewable energy production in emerging countries (Brazil, China, Russia) [5,6].
The government has a higher probability of avoiding risk when faced with a positive frame and searching for risk when faced with a negative frame. From this moment onward, the framing effect has become a well-documented bias in various studies. Since then, many papers have demonstrated the framing effect's sustainability in different contexts. The goal is to compare the significance of subjects' characteristics on the framing effect's impact on anti-COVID-19 decisions between February and March of 2020. On the other hand, previous coronaviruses' experiences guiding health personnel of the first line is a subgroup of special risk, especially when the current phase of containment of the pandemic ends [5][6][7].
Regarding the possible impact on the general population in China, a survey of 1210 people revealed that out of the 53.8% who rated the psychological impact of the situation, 16.5% reported depressive symptoms, 28.8% reported moderate to severe anxiety symptoms and 8.1% reported stress levels between moderate and severe [8][9][10][11][12][13][14][15][16][17][18]. It is also indicated that the framing effect includes numerous effects on sustainability, and various perceptual and cognitive processes can be used [9][10][11].
The renewable energy deployment was discussed in many previous papers from many points of view [9][10][11][12][13]: Efficient feed-in-tariff policies for renewable energy technologies; Understanding the dynamics and policy for renewable energy diffusion in Colombia; Cost-efficient demand-pull policies for multipurpose technologies: the case of stationary electricity storage; Integrated benefit-cost analysis of China's optimal adaptation and targeted mitigation; Local demand-pull policy and energy innovation: evidence from the solar photovoltaic market in China.
There are many factors influencing the public intention to use renewable energy technologies in South Korea, such as the effects of the Fukushima nuclear accident. Authorities need to avoid ignorance of unspecified information [12,13]. It supports the hypotheses about (1) the political effect, (2) the framing effect through behavior and (3) the rational behavioral effect.
The various restrictive policies are expected to reduce the sustainable demand for renewable energy and led to a drop in economic growth, slowing the growth of COVID-19 infections in 2020 [14,15]. This article also assesses to what extent the observed slowdown in the spread from March 2020 to September 2020 is due to the impact of politics and the extent to which the peculiarities of the interaction of the virus itself and the external environment. This question is crucial for assessing the effectiveness of restrictive policies in the future.
The behavior theory is the theoretical background of the study. Most empirical studies are on the relationship between energy dynamics and economic growth. For example, Kanas found a significant positive effect of the stock market on exchange rate changes in all countries except Germany [14]. It described the effect of the flow of volatility between the renewable energy market's economic growth in the COVID-19 pandemic period [9].
Most empirical studies using LSTM models emphasize the relationship between structural changes in different segments of the financial market [15]. Experts note that the relationship between market segments is often unstable. Any change in energy prices caused by economic growth fluctuations complicates the choice of an optimal sustainable transit strategy [16]. In addition, the principle of returning to the mean (mean reversal), applicable over a long-term time interval, can lead to errors when choosing the time for a transaction with various financial assets [17].
Renewable energy sources have contributed to the development of a sustainable global economy. The expansion of carbon dioxide emissions is an integral part of a country's economic growth. In the economic literature, the links between economic growth and pollution are analyzed [5,[18][19][20].

Materials and Methods
Many articles are devoted to various aspects of the use of renewable energy sources. They emphasize the lack of financial sustainability as a key factor that hinders the development of the industry. The financial sector during COVID-19 plays an important role in the development of energy.
The authors analyze a large amount of information taken from the World Health Organization (WHO) and British Petroleum (BP), including daily new COVID-19 cases and renewable energy generation volume. The assessment is carried out using a set of indicators that characterize the level of maturity of the economy in accordance with international standards.
Any intervention must be based on an exhaustive evaluation of the possible risk factors that may perpetuate the problem and the patient's previous sustainable development state. It was discovered that all countries use two main decision-making strategies: one reflects the data decision-making process, and the other demonstrates the process based on experience. Results show that older people will opt for the data-based strategy with less probability compared to younger adults. Still, only those who use a data-based strategy demonstrate the framing effect's presence, which suggests that the framing effect may be more associated with decision-making [16,17].
This study uses two models created with the Keras Long Short-Term Memory model (Keras LSTM) (Figures 1 and 2). The first model forecasts renewable power generation and uses 76 parameters. The second LSTM model estimates new COVID-19 cases across countries. It involves 10 parameters, the data for which are publicly available [18][19][20][21][22][23][24]. In the process of model validation, the weight coefficients are evaluated, which do not depend on the absolute value of the variables. Variables with a higher total value are weightier. The architecture of the constructed algorithm is not limited to a single intermediate layer, as in earlier studies [24,25]. The optimal number of nodes in the intermediate layer that allows the network to get the best performance is equal to the logarithm of the number of two samples used to evaluate the network itself.  The main predictive model used to estimate the parameters of renewable power generation, as well as forecast the spread of COVID-19, consists of two LSTM layers, where the first has 256 neurons and the second has 64. The LSTM itself consists of state blocks that receive input data at regular time intervals. At each time step, the input vector is fed into the LSTM, and the output is calculated according to: where x t is the input vector, h t и h t−1 are state vectors at time t and (t−1) and f w is a nonlinear activation function, where w represents different weight parameters. In this case, the nonlinear OLS (nonlinear least squares (NLS or NLLS)) is most relevant. In many cases, an analytical solution can be obtained. To solve the minimization problem, it is required to find the stationary points of the RSS function, differentiating it by unknown parameters b, equating the derivatives to zero and solving the resulting system of equations. For analytical purposes, the last representation of this formula is useful (in the system of equations when divided by n, arithmetic averages appear instead of sums). If the data are centered in the regression model, then in this representation, the first matrix has the meaning of a sample covariance matrix of factors, and the second is a vector of covariance of factors with a dependent variable [26][27][28][29][30][31][32].
For the LSTM expansion function, for SNNs to work, they need two things: a custom weight initialization method and the activation function, a scaled exponential linear unit (SELU). It is used on the first layer [33][34][35][36][37].
It is noteworthy that the ability to compute influence decisions in attributive frames is becoming more evident, but only a few studies have researched computing skills' effect as an influencing factor on renewable-energy-related behavior [30][31][32]. However, several papers have not reported observing this effect on sustainability [33][34][35].
However, most studies can examine only a few influential factors because the more variables that they interact with, the more participants and questionnaires are required in these studies [36][37][38][39].
Kahneman's perspective theory has specifically the possible outcome that is interpreted and encoded by people as either "gain" or "loss." In fact, actual problems are commonly more complex than those developed in experiments. There are few studies of the effect in Asia, especially regarding healthcare. The low number of studies about this topic in Asia is explained by financial, administrative and other restrictions. To summarize, it should be noted that papers on the framing effect's application to medical decisions in Asia are insufficient [40][41][42].
The method is based on ordering by the following formula for the next effects: informational delays and physical delays. The formula includes:

1.
Time of information and physical delays are defined by t; 2.
Behavior is implemented, taking into account policies, information and confusions in t; 2.
Results are implemented on t+ , taking into account policy, behavior, information and confusion.
where is a set of functional relationships with stochastic shocks, decomposed into the observed part δ Y W it and the unobservable part ε. The conditions ε y it and ε b it are centered stochastic shocks that obey the orthogonality constraints set out below. This study's data were daily cumulative cases of COVID-19 infection rates in 210 countries (and dependent territories) from the spread's beginning (February-March) to 11 April 2020. This period is optimal for the evaluation because some countries' measures began to soften after this date.
These data were obtained from a reliable source: the World Health Organization [43]. Many different countries adopted large-scale counteraction measures during this period, and these data were used as a basis to predict the pandemic's spread. The most appropriate model was used to predict detectable cases and for potential mortality rates in various time periods.
Many different countries adopted large-scale counteraction measures during this period, and these data were used as a basis to predict the pandemic's spread. The most appropriate model was used to predict detectable cases and for potential mortality rates in various time periods.
These data were used to revise the Oxford University model's accuracy (Oxford University model, http://epidemicforecasting.org/ (accessed on 15 April 2021)) on the daily spread of COVID-19, which was used by most countries that made decisions regarding the introduction of antivirus measures [44,45].

Results
The application MATLAB was also used to model data on the total number of daily diagnosed cases of COVID-19 in 2020. The COVID-19 pandemic shows us the wrong decisions that even the most developed countries make. However, they will probably need more time, and they will suffer larger losses due to the COVID-19 framing effect. The independent variable is time t, measured in days. There are two sets of dependent variables.
Potentially infected COVID-19 people: The COVID-19 framing effect in the subject's choice of behavior depending on the frame of choice's option's presentation can manifest itself in the form of reserved preferences or a shift in preferences [46,47]. To further the study on the possible effects of framing, it built a comparison table for the University of Oxford model for choosing a risky option (introducing restrictive state measures) and a risk-free negative option (no restrictions) ( Table 1). Source: authors' calculations. Note: population groups are: more than 300 million-China, USA; 300-50 million-Italy, Spain, UK, Germany, Turkey, Iran; less than 50 million-Sweden, South Korea. R-number of people infected by one person β/γ(1−C/N)); R 0-basic reproduction (β / γ); β-average contact frequency (1/day); γ-average removal frequency (1/day); N-initial size of the susceptible population; C-net recovered persons S-Net number of susceptible persons left.
The government measures the effect on the number of people infected by one person and the average contact frequency (1/day). In high-level-population countries, the average contact frequency (1/day) is significantly stronger (0.779) than in middle-(0.158) and low-level-population countries (0.1415). Therefore, the hypothesis on the presence of the COVID-19 effect on renewable energy production is proved in highly developed countries (USA, UK and Germany) and the classic COVID-19 effect on renewable energy production in emerging countries (Brazil, Russia). Prognoses were made according to economic growth and renewable energy production during the COVID-19 pandemic. (Figures 3-8, Appendix A).      The analysis includes the following factors: the country's population (more than 300 million people, 300-500 million people, less than 50 million people). Note that the model's accuracy (RMSE) was evaluated on the same historical data, but they are described from two different points of view: risk-free negative results and risky positive results. There is a strong presence of the COVID-19 framing effect in all experimental conditions, as can be concluded from Table 1.
Structural validity measures the degree of adequacy of the relationship of the measured structure [41]. In this study, structural validity was assessed using confirmatory factor analysis (CFA). One-dimensionality was investigated by the CFA method on a polychoric correlation matrix using the least squares method (LSM) and variance adjustment (VA). The comparative price index (CPI), the Tucker-Lewis Index (TLI), the root-mean-square approximation error (RMSAE), and the standardized root-mean-square remainder (SRMR) allow for an improved model fit (Table 2). Government bodies are more vulnerable to risk when choosing a positive outcome than selecting a negative outcome. This effect is enhanced when the decision is postponed for high-level-population countries (more than 300 million) than for low-level-population countries (less than 50 million).
As a result, the simulation confirmed that there is a difference in the frequencies of pattern selection concerning the country's population. The risky decision was made in the USA (Figure 4) earlier than other countries' actions in the corresponding time of choice [48][49][50][51][52][53].
This model has a very high explanation, although typical regression assumptions apply to Keras models. The very high accuracies reported in this paper might result from spurious effects and that the result might not be relevant for applied researchers. One way to alleviate this problem would be to redo the analysis after differentiating the variables associated with renewable energy generation as the dependent variable (Appendix A).
COVID-19 has become a global epidemic, leading to serious complications that further reduce the quality of life and its expectancy, contributing to an increase in patients' mortality rate. In this regard, the assessment of the COVID-19 framing effect on renewable energy is a priority task.

Discussion
At the start of the outbreak of COVID-19, the absence of proper economic planning afterward caused these to be implemented disorganized and ineffectively, also compromising access to available social and health resources. Considering recent events, the same mistakes were made, mainly in the framing effect in renewable energy [45][46][47][48][49][50][51][52][53][54].
This paper's results prove the novelty of this work: a practical approach concerning the COVID-19 measures and recommendations that enable sustainable development in the time of COVID-19 measures.
The analysis also yielded additional results. The strongest reductions in energy generation occurred in countries with a high percentage (more than 80%) of urban population (Brazil, USA, the United Kingdom and Germany). This study used two models created with the Keras LSTM model. The first model forecasts power generation and uses 76 parameters. The second LSTM model forecasts new COVID-19 cases across countries, in which 10 parameters are involved [55][56][57][58].
This article suggests that various restrictive strategies reduced sustainable demand for renewable energy and led to a drop in economic growth, slowing the growth of COVID-19 infections in 2020. It is unknown to what extent the observed slowdown in the spread from March 2020 to September 2020 due to the policy's impact and not the interaction between the virus and the external environment. All renewable energy producers decreased the volume of renewable energy supply in 2020 (except China) [59][60][61][62][63][64][65]. The results expand the literature and show that various COVID-19 restrictive strategies led to a reduction in sustainable demand for renewable energy [66][67][68].

Conclusions
In conclusion, the restrictive measures imposed by the COVID 19 pandemic have led to a reduction in energy consumption, regardless of its source of production, not only that produced from renewable resources [15][16][17]. This paper proves that the various restrictive strategies led to a reduction in sustainable demand for renewable energy and a drop in economic growth, slowing the growth of COVID-19 infections in 2020.
The government measures the effect on the number of people infected by one person and the average contact frequency (1/day). In high-level-population countries, the average contact frequency (1/day) is significantly stronger (0.779) than in middle-(0.158) and low-level-population countries (0.1415). Therefore, the hypothesis on the presence of the COVID-19 effect on renewable energy production is proved in highly developed countries (USA, UK and Germany) and the classic COVID-19 effect on renewable energy production in emerging countries (Brazil, Russia). All renewable energy producers (except China) decreased the volume of renewable energy supply in 2020.
This paper proved the idea about the framing effect in renewable energy and sustainability. In future research, the question about the COVID-19 framing effect in different countries will be addressed. The results for the theory and method development showed that various restrictive strategies led to a reduction in sustainable demand for renewable energy and a drop in economic growth, slowing COVID-19 infections in 2020.
The importance of the results is high because future studies may determine the extent to which the observed slowdown is spread is due to the impact of policies rather than the interaction of the virus itself and the external environment. This paper has limitations. For the forecast of global energy consumption in pandemic conditions, it is first necessary to know the evolution of economic growth, which, unfortunately, is impossible to make exactly at this time.