This report is part of the development of a National Modelling System for local air quality (“Nasjonalt Beregningsverktøy” or NBV project). We describe and document the emission database used as baseline in the NBV project (i.e. NBV_Emission_Database v.0) and the preliminary emission estimates. This report presents NOx and PM10 emission estimates for Bergen, Drammen, Grenland, Oslo, Trondheim and Stavanger, and the breakdown among sectors. The report emphasizes on the need for update emissions. The developments carried out in 2015 and described in this report involves i) the traffic sector through the development of application to retrieve data; ii) the residential heating sector by updating emissions from wood burning; and iii) the update of shipping emissions. The updated emissions will constitute the NBV_Emission_Database v.1, which better represents current situation, is consistent regarding the methods used to estimate emissions, and completes identified gaps. Our study highlight the importance of updating regularly emissions inventories.