Latvian Software for calculation of the energy performance of buildings

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The programme for the evaluation of energy performance of buildings, and for issuing an energy performance certificate for existing buildings or a temporary energy performance certificate for designed buildings (new and reconstructed). The software runs on Microsoft Excel sheets and is available free of charge on the Ministry of Economics’ website. The programme use is limited - it can do the calculations for most existing buildings with no more than three heating zones, but it does not detail what is required for low-energy buildings or buildings needing complex solutions.