The pace of the implementation of renewable electricity storage in Europe is disappointingly slow. Several factors influence this and there is a need to speed up the rate and increase the volumes in order to promote a 100% transition to renewable energy resources, expand the practice of using renewable energy, and contribute to the improvement of the quality of life of consumers. An important factor is significantly reducing impact on the environment and climate change. Electricity from renewable energy sources such as solar and wind has a seasonal nature that cannot provide the necessary electricity consumption and cover peak loads. The so-called “energy resource crisis” is also a very topical problem at the moment, which reinforces the global need to increase the share of renewable energy resources in the overall balance of primary energy resources. Practical wider integration of renewable electricity storage is what can help stimulate this. The availability of renewable electricity is constantly increasing, and the level of technological innovation is rapidly developing. Therefore, it is valuable to analyse, look for connections and for ways to accumulate electricity in order to promote its availability from private homes to the national scale and more broadly on the European scale. Therefore, this article analyses and compares the different options for renewable electricity storage, from small batteries to large storage systems, arriving at the best solution according to needs, using analysis methods such as multicriteria decision analysis (MCDA) and TOPSIS. After comparing nine criteria, such as the amount of investment required, existing power density, efficiency, duration of operation, and others in two groups (small and large accumulation systems), it was concluded that lithium-ion batteries are currently the best solution among batteries, while pumped hydro storage is the best solution among large accumulation systems.

The last decade in particular has seen prosperity in global challenges. Traditional industry leaders have to compete with the challenges of the new generation in emerging markets. Although the European market is competitively mature, the prosperity in global challenges makes it necessary to defend the domestic market as well as to pursue growth opportunities in emerging markets. Analyzing the trends, a comparison of the US and Chinese innovation commercialization policies from a customer perspective with Europe was distinguished. The main difference is Europe's narrowly defined customer segment, companies do not adapt to customer micro-segments with non-matching product and service requirements, because individual attraction strategies must be implemented for each branch, which increase the difficulty to draw potential global clients. The aim of this work is to analyze the US and Chinese innovation commercialization process policies from a customer perspective to gain an insight into the improvement of European national policy models. A multi-criteria decision analysis was used to compare the US and European influencing factor criteria, which focuses on customer segmentation, to determine the most influential segment. Data were also collected in the analysis of the success of European commercialization. The focus on the US end-market approach is expected to increase the value of the proximity factor by improving the implementation of European innovation policy in practice.

The pace of implementation of renewable electricity storage in Europe is disappointingly slow due to several factors. There is a need to speed up the rate and increase the volumes in order to promote a 100 % transition to renewable energy resources, expand the practice of using renewable energy, and contribute to the improvement of the user’s quality of life. In addition, a significant reduction of the global impact on the environment and climate change is an important factor. Electricity from renewable energy sources, such as the sun and wind, has a seasonal nature that cannot provide the necessary electricity for consumption and cannot cover peak loads. Also, the so-called 'energy resource crisis' is a topical issue, which reinforces the global need to increase the share of renewable energy resources in the overall balance of primary energy resources. It is precisely the wider integration of renewable electricity storage in practice that can help stimulate this. The availability of renewable electricity is constantly increasing, and the level of technological innovation is rapidly developing. Therefore, it is crucial to analyse both phenomena and actively search for overlaps in developing technologies, not forgetting the main differences in the types of accumulation, to promote accessibility, starting from a private house to the national and European scale. This article analyses and compares the options for renewable electricity storage – from small batteries to large storage systems. The authors consider the best solutions to satisfy individual and collective needs of the consumer. In this article, a multicriteria decision analysis (MCDA) and TOPSIS are used as analysis tools. After comparing nine criteria, such as the investment required, existing power density, efficiency, duration of operation, and others, in both groups, it is concluded that lithium-ion batteries are currently the best solution among batteries; while in the group of large accumulation systems pumped hydro storage secures a superior position.

The pace of implementation of renewable electricity storage in Europe is disappointingly slow. Several factors influence it, but there is a need to speed up the rate and increase the volumes in order to promote a 100% transition to renewable energy resources, expand the practice of using renewable energy, and contribute to the improvement of the user's quality of life. Also, an important factor is significantly reducing the global impact on the environment and climate change. Electricity from renewable energy sources such as solar and wind has a seasonal nature that cannot provide the necessary electricity consumption and cover peak loads. Also, the so-called "energy resource crisis" is a very topical problem at the moment, which reinforces the global need to increase the share of renewable energy resources in the overall balance of primary energy resources. It is precisely the wider integration of renewable electricity storage in practice that can help stimulate this. The availability of renewable electricity is constantly increasing and the level of technological innovation is rapidly developing, therefore it is valuable to analyze, look for connections and at the same time the main differences in the ways of accumulation in order to promote its availability from a private house to the national and European scale as a whole. Therefore, this article analyses and compares the different options for renewable electricity storage, from small batteries to large storage systems, arriving at the best solution according to needs, using analysis methods such as multicriteria decision analysis (MCDA) and TOPSIS. After comparing nine criteria, such as the amount of investment required, existing power density, efficiency, duration of operation and others, in both groups, it was concluded that lithium-ion batteries are currently the best solution among batteries, while in the group of large accumulation systems – pumped hydro storage.