This dataset contains the data to calculate the spatial distribution of the dissipation as well as the absorption efficiencies of both Gold and Silicon designs, as presented in the article "Time-domain topology optimization of power dissipation in dispersive dielectric and plasmonic nanostructures". This includes the electric field distribution in 3D for multiple wavelengths (netCDF), the final density (netCDF), the design (STL) and material and simulation parameters (JSON) used in the optimization. The evaluation of this data can be performed using the code published on https://github.com/JoGed/dissipation-calculation