With the development of the National Glass House Database (NÜA), a qualitatively new model will be created that further develops the existing databases (National Emissions Inventory, HUNMIT model) to produce greenhouse gas emission projections, sectoral and general economic strategic planning, policy decision-based studies, better estimation of expected quota revenues and enable us to better and more accurately comply with our different reporting obligations. In the case of the National Emissions Inventory, further development means, on the one hand, the modernisation of the production methodology of the input data, which allows the submission of data in a formalised manner, the sectoral input data received from the data providers in a uniform form and, on the other hand, an increase in the amount of data received. In the case of the HUNMIT model, as a result of the development, the time interval of the scenarios is extended and the range of economic activities examined is extended. The development of the IEA is prepared by two underlying developments: Develop the IEA System Plan and develop a methodology requiring the involvement of some external experts. Using their outputs, the final content of the development is determined. Modules shall ensure the functioning of the database and management software to be developed in order to achieve its intended purpose. Modules to be developed under the project: • National Emission Inventory Module: Quantitative and qualitative development of Inventory data is based on IPCC emission calculation methods, taking into account regional and domestic circumstances. Increasing input data helps to increase accuracy, control primary data, automation of computational tasks increases error-free. • Projection module: A function capable of producing emission scenarios. The boundary conditions of the projection are technological changes determining the intensity of emissions and international and domestic policy measures. Within the IEA, it is also possible to prepare the technology scenarios for each sector, both within the EU ETS and non-ETS systems. The module essentially foresees three scenarios (without emission limitation measures, continuation of existing measures and the effects of the measures to be introduced). • Policy module: The IEA provides the opportunity to dynamically monitor, feedback and establish a monitoring system for mitigation and adaptation impacts of changes in sector strategies. Through its application, it is possible to compare the measures based on their impact, cost and effectiveness. For example, monitoring the future fulfilment of climate policy targets stemming from different international or EU commitments, which may be voluntarily committed, can be done easily with the help of the IEA. • On the sharing of ETS efforts (hereinafter referred to as: Module ESD): The IEA manages the Inventory and at the same time the greenhouse gas emissions data, registering tradable domestic quotas and emission allowances both within the ETS and outside the ETS. The volume of tradable quotas, as well as the sales price, is essentially determined by the processes of the energy sector and industry in the Union as a whole, rather than domestic. As a result, the model does not use the data described in the previous chapters but uses the long-term projections produced by the Commission. Such an increase in accuracy can lead to reliable and accurate revenues for the national economy. • Reporting module: It aims to meet the EU and international reporting obligations, producing essentially automated reporting based on the most up-to-date data, formally and substantively appropriate. The hardware and software environment (other than those to be developed) required for the operation of the database, as well as their operation, will be purchased within the project. In addition to the development and deployment of the system, the implementation of the IEA is part of the project: Performing the testing and documentation tasks related to the development, training and implementation (installation) of the system at the affected users and loading all source data into the transaction database from 1985 onwards. To help disseminate information, at least five workshops/events will be held on the results of the project for professionals, data providers and the general public.