Unlike mapping, where it is suitable to break down addressing data about coverage, the technology used and the specific parameters into as small territorial units as possible, i.e. BSUs, for the purpose of public aid such territorial definitions are unsuitable, as in the actual definition of basic settlement units the urban-architectural principle dominates completely complying with statistical and registration purposes. As regards the size of an individual supported territorial unit, the state’s objective is to set such rules for public aid that motivate private investors to invest into areas that would otherwise be economically uninteresting for them. By setting a minimum level of penetration and including the level of penetration as one of the assessment criteria for selecting projects, the state will, in accordance with European documents, guarantee the achievement of a “step change”38 in coverage throughout the defined territory. At the same time, it is necessary to take into account the network nature of the electronic communications sector, the need for blanket coverage of the populated territory, and the advantages arising from this. Last but not least, it is important to emphasise that the result of the implemented public aid should primarily serve end users. The aims and conditions of this support must correspond to this. An appropriate compromise for determining the size of the supported territory, or areas of intervention, appears to be an aggregate of several BSUs that can take advantage of synergic network conditions. For the purpose of public aid this will take into account the network links between neighbouring BSUs and concurrently such breakdown will also be acceptable for smaller business entities operating in electronic communications. To ensure maximum openness to competition, under conditions equal for all enterprises, it will be possible to submit joint projects based on consortia, associations of several business entities, or based on mutual commitments of such entities implemented in the form of commercial contracts or preliminary contracts. Based on coverage maps resulting from public consultation, the OP EIC Managing Authority will determine a set of areas of intervention that will apply for a specific round of a call from specific objective 4.1 of the OP EIC. To determine the areas of intervention the following rules have been set: a) An area of intervention may only be defined from so-called white BSUs, which may be grouped into larger territorial units so that the grouping is logical, transparent and promotes the efficiency of construction and operation of the supported NGAs. White areas determined in this way should be contiguous. A definition where there is one or more black or grey areas between individual white areas is possible only if costeffectiveness allows. b) An area of intervention will be defined according to specific local demographic, geographic, territorial administrative and other conditions under the principles of economic efficiency, promotion of competition and the future development of services in relation to the fulfilment of OP EIC monitoring indicators. c) When defining areas of intervention, the conditions in the EU Guidelines and the conditions in the National Plan and in the document Digital Czech Republic 2.0 will be taken into account in particular. d) The sizes of areas of intervention will be proposed so that ‒ The mean value of the number of white address points in an area of intervention is between 2000 and 4000. These are average values that arose from discussions with the professional public and that reflect the average value (although it is clear that the market is significantly fragmented into a large number of entities with differing needs). With regard to the effective management of entrusted funds, it is necessary 38 See Paragraph 51 of the EU Guidelines 39