This article describes the conditions for operation of the electricity storage for three main groups: customers, using the electricity storage in order to increase the effectiveness of their own produced electricity by storing the produced electricity for later consumption, business utilities, providing the stored electricity as balance service to electricity traders and business utilities operating the electricity storage as an independent unit, providing balance services to the transmission system operator. The main focus is on the energy license and electricity grid system rules within the Czech applicable laws as well as in the light of the prepared amendments to the applicable laws.

Batteries are being used more and more frequently, and the number of accidents associated with batteries is increasing proportionately. The gravity of these problems and their causes are the subject of this article.

Paper deals with the definition of energy flexible building, its impact on the stability of the grid with the planned increasing share of energy from renewable sources and the possibility of using the heat storage capacity of building structures. Paper further analyzes the selected methodology for evaluation of the energy flexibible building and gives an example of thermally activated building structures.

The paper deals with the analysis of thermal losses of pipe distributions in the small solar system model created in the TRNSYS energy simulation tool. Attention is paid to the impact of heat loss through pipelines on the overall energy balance. Several variants of pipe lengths for one type of system have been selected. The results presented in the articles illustrate the influence of different pipe lengths on heat losses and the consequent impact on the energy balance of the monitored system.

Historic buildings are often classified as highly energy-intensive buildings with low energy efficiency. Thanks to their overall percentage share in the European real estate market, it is logical to focus on these objects with an innovative approach and functional, sensitively aesthetic solutions, thus significantly reducing their energy intensity and increasing their energy efficiency. At the same time, it will enable to meet the new energy targets currently proposed by the European Commission.

The article describes basic principles of the SBToolCZ green building assessment methodology stressing its up-to-date methods for school buildings. An example of a certified school is given. Renovation of this school was assessed and optimised by the SBToolCZ system which lead to the conversion into intelligent, zero energy building.

In July 2018, a two-year monitoring of the FENIX Group a.s. in Jeseník. During this time, different battery operating modes were applied to test their capabilities to ensure the power operation of the object. This article describes the entire period in terms of energy flows in the building. The key parameters are energy consumption, supply to the grid, self-sufficiency of the building from the photovoltaic source and its local use. A number of articles have been written about the building, detailing the building and energy aspects [1, 2]. Therefore, the description of the energy economy in the building will be given only to the extent necessary for a general view of the building's energy.

Historic buildings are often classified as highly energy-intensive buildings with low energy efficiency. Thanks to their overall percentage share in the European real estate market, it is logical to focus on these objects with an innovative approach and functional, sensitively aesthetic solutions, thus significantly reducing their energy intensity and increasing their energy efficiency. At the same time, it will enable to meet the new energy targets currently proposed by the European Commission.

The methodology for determining energy-neutral or energy-zero houses is different at national levels. The interest in the realization of such houses is not only influenced by the methodology but also by the market conditions in the area of moving surplus energy production from one object to another. This is an economically disadvantageous purchase price when delivering to the network. If the existing conditions in the Czech Republic are not changed, the implementation of energy-zero houses for investors will not be interesting and the potential for reduction of CO₂ production will not be utilized.

The article focuses in detail on the effect of the storage tank size on the yearly balance of the photovoltaic power plant using a 10-minute calculation step that will allow us to take a closer look at the processes associated with the production of electricity, the hot water consumption and its accumulation. The results are assessed not only from the point of view of the energy balance, but also from the point of view of economic advantage.

Unique charging station for electric vehicles was opened in february at the Prague Fair Grounds. The project combines recharging of electric vehicles with other functions: by producing their own energy using roof photovoltaics and by regulating overvoltage or undervoltage of the surrounding network using a battery system.

There is not sufficient material for agricultural biogas stations from their own activities (organic fertilizers, etc.), so it is complemented by targeted crops. In general, corn is used, but can be replaced by a feed sorrel. It has many benefits, such as lower cropping costs and long-term endurance, thus limiting soil erosion.

Innovative technologies incorporated in building constructions are able to produce renewable energy. The submitted paper deals with the current status of photovoltaic (PV) integration in building facades by selected systems. The main emphasis is focused on the newest concepts and their current development, specifically of those in combination with other progressive materials and technologies.

In contemporary architecture, straw is used marginally, mostly in do-it-yourself construction. Although the convenient qualities of straw have long been known, it has not gained the trust of builders and designers. Construction companies have not learned to work with straw on a regular basis. In the scope of green technologies, an opportunity is emerging to use straw in professional building systems suitable for sustainable architecture. If we want to apply it in our architectural designs, we have several possibilities. The common small straw bales are suitable for many ways of structure and do-it-yourself process. This way of building process can be interrupt by logistic problems or weather disaster. Contemporary building market offers professional products made of straw: universal strongly pressed boards or system of modular units for external walls. All these ways of application are able to gain the high building quality. The innovative straw technologies enable to design and erect the energy passive house with considerable percentage of straw in constructions. Although the advantages of straw are indisputable, the next success of straw building materials depends on the interest of architects and builders.

Replacing a concept “types” of the landscape by the concept “landscapes” in the content of the graphical part of the territorial development principles (ZÚR) presents a substantial change of content in the expression of conception of the regional development, because for these landscapes the target qualities including territorial conditions for their preservation or accomplishment are established in the territorial development principles (ZÚR). The original definition of the types of landscape, which divided the territory according to the characteristic features and properties, must be gradually replaced by the definition of (real) landscapes. It is a great change, because a type of landscape expresses the characteristic properties, but real landscapes in the sense of landscape itself = specific, characteristic, have substantially different sense – they express most of all individual properties of the landscape. Therefore it is necessary to describe and give reasons for importance and the method of individual (not typological) zonation of the territory of the region into landscapes (real landscapes) corresponding to the sense of the European Landscape Convention.

The issue of fires of photovoltaic power plants attracted great media attention around 2010. In terms of the total number of installations of photovoltaic power plants and the amount of electricity produced, the Czech Republic is equal to solar giants such as Germany, Italy, France. However, if we look at a comparison of photovoltaic capacities related to the population, position of the Czech Republic is not bad in the EU.

Solar air collectors can provide partial coverage of the heat demand for building heating. On the energy model of a family house, an annual heat supply for heating for different uses of air collector systems was examined. The analysis shows that, as opposed to the use of a ventilating unit with recuperation, the air solar collectors do not provide savings due to low solar gains and short operating hours in the winter. The combination of the air collectors with the regenerative unit does not bring a significant decrease in the energy requirement compared with the regenerative unit itself, as the combined efficiency of both devices is reduced.

It is expected that the new administrative centre of Lesy České republiky would be an exemplary demonstration of the use of wood, which will be used in the form of the building material or in which the importance of wood will be emphasized in another appropriate way. The paper is focused on a proposal that won the international architectural competition in 2016.

Biomass energy utilization is usually considered as direct combustion, newly for the biogas production in the biogas plant (BPS). In addition to commonly known tree species, the field crops described in this paper can be used as well.

When deciding on energy investments, consultants and designers often rely on data listed in the technical data sheets provided by manufacturers. This can lead to a very unpleasant surprise for operators - fuel consumption is often significantly higher than assumed by the assessment. Especially in terms of smaller heat sources, this approach leads to errors and consequent significant economic losses.