2. Energy Security
Energy security is an issue historically associated with the depletion of fossil fuels, in the result of which the security of supply has become a particularly important concern
[25]. It is defined in a variety of ways in the research literature with no clear consensus. Those definitions do, however, contain certain dominant aspects
[26,27,28,29,30][26][27][28][29][30]. They include: energy availability, infrastructure, energy prices, societal effects, environment, governance, and energy efficiency
[29]. In general, energy security is connected to risk management and energy management
[11]. In the short term, this relates to the ability of the energy system to quickly respond to sudden changes in the supply–demand balance. However, in the long term, energy security concerns are associated with timely investment in energy supply in line with economic development and ecological issues. In the context of state, energy security is one of the key elements of economic security
[31[31][32][33][34],
32,33,34], where an important aspect is energy price
[35]. Contemporary definitions of energy security exceed the aspect of protecting the supply of main energy sources to include environmental, social, and economic concerns, as well as the operational reliability of energy systems
[36].
The IEA defines energy security as “the uninterrupted availability of energy sources at an affordable price”
[37]. The EU also emphasizes the critical importance of ‘a stable and abundant supply of energy’ for European prosperity and security. This approach is supported by a number of studies which find that energy security plays a significant role in both national economic growth
[38,39,40,41][38][39][40][41] and human life
[42,43][42][43].
The concept of energy security is important primarily for the energy consumer who should be guaranteed energy in the form and quantity needed, at the required time and at an available price. The state’s task with regard to the energy sector should be to ensure a high level of energy security, understood as a supply, economic (certainty that energy prices will not create a barrier to economic development and will not lead to energy poverty), or environmental security (energy production will not cause excessive environmental pollution).
The European Union has established energy security as one of the cornerstones of its energy policy
[44]. Throughout the years, it has taken a number of measures to ensure energy security, such as the creation of the Energy Union in 2015 to ensure free flow of energy between EU countries and reduce dependence on imports. It has, nevertheless, failed to make the economies of its Member States immune to disruptions, such as the COVID-19 pandemic or the 2022 cut-off of gas supplies from Russia. Therefore, it would be more reasonable to place more emphasis on diversification of energy sources and, as raised with increased intensity in public discourse, greater use of alternative energy sources. In the document of 18 May 2022, the European Commission also emphasizes that internal energy security requires “diversifying the EU energy supply, increasing energy savings and efficiency and accelerating the green energy transition”
[45].
3. The Role of Renewable Energy Sources
In consequence, fast development of renewable energy sources seems to be a matter of time, especially as many studies point to their contribution to economic growth, the promotion of local socio-economic development, better environmental protection and, above all, worldwide cooperation to reduce global warming
[15,46,47,48,49][15][46][47][48][49]. Setting ambitious goals such as, among others, cutting greenhouse gas emissions by at least 55% (compared with 1990) by 2030, and becoming a climate-neutral continent by 2050 would speed up the transition to sustainable energy. These initiatives have begun to bear fruit, with an increasing proportion of Europe’s energy needs being met through renewable energy sources. In 2021, more than 22% of gross final energy consumed in the EU came from renewable sources
[50]. However, their share in the energy mix varies considerably from one EU country to another: in Sweden, it is around 60%, in Denmark, Estonia, Finland, and Latvia, it is over 40%, and in Belgium, Hungary, Ireland, Luxembourg, Malta, and the Netherlands, it is between 10% and 15%
[50]. Between 2005 and 2021 the renewable energy share in the EU grew by an average 0.8% per year.
There are also significant differences in the speed and motivation with which Member States are pursuing the transition towards clean energy. Some EU countries are strongly promoting renewables (e.g., Germany, Denmark), while others are actively resisting it (i.e., Poland)
[51]. Observations in recent years have shown that in Western European countries, renewable energy is regarded as a means to bring these countries closer to energy independence and security, providing opportunities for further industrial development. In Eastern European countries, on the other hand, there is a concern about fossil fuel industry workforce and electricity prices. It appears that renewable energy is perceived as a win-win in the West and a win-lose in the East
[51].
The transition to renewable energy sources is a major challenge. In order to promote their use, ensure uninterrupted energy supply and lower transmission costs, Europeans are being encouraged to become prosumers who generate electricity with, e.g., solar panels, consume it and feed it into the transmission grid. The benefits of doing so are numerous: from savings thanks to lower energy costs, to accelerating Europe’s energy transition and reducing greenhouse gas emissions
[52,53,54,55][52][53][54][55]. Other benefits worth noting are the creation of local jobs, circumventing land use, escaping transmission costs and increasing grid flexibility
[56]. According to data provided by the International Renewable Energy Agency (IRENA), the RES industry already employed more than 7.3 million people worldwide at the end of 2012, but in 2021 this number grew to about 12.7 million (of which the largest group of people, 4.29 million, were associated with the solar photovoltaic industry, while the smallest one, 0.77 million, were related to solar heating/cooling)
[57]. Close to two-thirds of all jobs were in Asia (China alone accounts for 42% of the global total), followed by the European Union and Brazil with 10% each, and the United States and India with 7% each
[57].
Individual EU countries use a variety of financial incentives to develop the prosumer market, such as low-interest and long-term loans, environmental tax exemptions, feed-in tariffs, or premiums with specific measures tailored to prosumers. Incentives should also aim to encourage the development and implementation of new technologies designed to protect the environment
[58].
4. Renewable Energy in Poland
The dynamic development of renewable energy in Poland began after it joined the EU. Poland’s installed capacity of renewable energy sources increased from 11.6 GW in 2005 to 23.4 MW in April 2023. According to the Ministry of Climate and Environment’s statement, this growth is expected to be exponential in the coming years. According to the assumptions of the update to Poland’s Energy Policy until 2040, by the end of the decade, the installed capacity of RES will reach 50, and 88 GW by 2040
[59].
In recent years, there has been a significant increase in the total domestic consumption of renewable energy, i.e., between 2017 and 2021, the increase was 44.38%
[60]. Renewable energy generated in Poland includes energy from solar radiation, water, wind, geothermal resources, energy generated from solid biofuels, biogas and liquid biofuels, as well as ambient energy from heat pumps. As far as domestic acquisition (and use) of energy from renewable sources, solid biofuels occupied a dominant position. Compared with 2017, their share in obtaining energy from renewable sources in 2021 amounted to 69.35% and increased by 2.59 percentage points. Between 2017 and 2021, the share of wind energy decreased from 13.89% to 10.90%, biogas: from 3.04% to 2.49% and water energy: from 2.38% to 1.57%. At the same time, the share of solar energy increased from 0.74% to 3.31%. In 2021, solar energy (516%) achieved a relatively high position in obtaining energy from renewable sources by carrier, followed by heat pumps (102%), and then biogas, water energy, municipal waste energy, and geothermal energy, respectively
[60].
A similar trend can be observed worldwide. Among renewable technologies, solar photovoltaic installations grew the fastest, with a twenty-six-fold increase in the 13-year period from 2010 to 2022. This was due to significant cost savings generated by technological advancements, high learning rates, policy support and innovative financing models
[61]. In the EU, the REPowerEU plan introduced a strategy to double solar photovoltaic capacity to 320 GW by 2025 and install 600 GW by 2030. The plan also included a phased-in legal obligation to install solar panels on new public, commercial, and residential buildings
[62]. This will certainly be reflected in employment in the sector as well. IRENA’s estimates for upcoming years make Poland home to the largest solar PV workforce on the continent
[61]. Among top ten countries where solar PV employment will grow, Poland ranks 6th (behind China, United States, India, Japan, Bangladesh, Brazil), ahead of Germany (8th), Vietnam (9th), and Australia (10th)
[61]. Therefore, it seems that the popularity of solar photovoltaic energy resources will grow in the near future, especially since technologies are developing rapidly, including the market for so-called organic photovoltaic cells
[63], the total cost of installing photovoltaic projects is projected to continue to decline over the next three decades
[16], existing integration strategies and those under development will allow large penetration of solar PV not only in the power grid but in the entire energy system
[64].
The complementarity of solar PV with, for example, wind energy is already being noted
[16,65][16][65]. Although wind power will probably remain one of the major electricity generation sources, supplying more than one third of total electricity demand, solar PV power should follow, supplying 25% of total electricity demand. According to IRENA
[16], it would represent over a tenfold rise in the solar PV share of the generation mix by 2050, in comparison with 2016 levels.
The role of photovoltaics in the energy transition is gaining recognition in Poland
[66,67,68,69][66][67][68][69]. There are a number of factors contributing to the expansion of the photovoltaic user pool: ease of installation, simplicity of construction, relatively low costs, low labor intensity, no need to purchase fuel, and the ability to scale the installation depending on the capital
[68]. Traditional centralized power systems, dominated by large conventional units controlled by few players, are being replaced by systems based on distributed generation capacity. Thus, a large part of energy can be generated by a group of producers including households and companies for which power generation is not the main business. The most important goals that can be achieved through such activities include
[70]:
-
Increased competition in the energy market which will consequently lead to a decrease in prices;
-
The possibility of implementing a number of small investments, characterized by a relatively large total installed capacity;
-
Stimulation of the development of innovative technological solutions, especially smart grids;
-
The involvement of private capital in the development of a low-carbon economy;
-
Technological diversification in the electricity system;
-
A broadly understood improvement in the environment, both locally (improving air quality) and globally (combating climate change);
-
Increased public awareness of energy transition and security.