Hi Espe,   I believe ID Spec Plugin for AutoCAD more or less addresses what you are looking for: https://shop.exchange.se.com/apps/39861/id-spec-plugin-for-autocad#!overview   Please find below: Plugin summary Design time reduction Complements your design tools. You can now build your electrical plan directly on the building layout inside AutoCAD. Reduce Capex and Opex Helps to Optimize your design. You can evaluate electrical energy performance of the building installation to save on Capex and Opex during the initial stage of the project. Professional Reports Bill of quantity and detailed technical specification of the electrical equipment according to industry standard to generate project proposals in no time. Below feature meeting one specific example you gave:   Calculation and Solution   Baryenter calculations to determine power sum and optimal location of equipment according to IEC60364-8-1  Electrical installation cable sizing according to IEC 60364 taking into account cable length Automatic sizing and selection of major electrical equipment MV switchboard, MV/LV transformer, LV main and sub-distribution boards   Wish that helps! Jean Commeignes Exchange Community Manager ... View more