Hung-pin Lai and Subal C. Kumbhakar, "Estimation of a Dynamic Stochastic Frontier Model using Likelihood-based Approaches", Journal of Applied Econometrics, Vol. 35, No. 2, 2020, pp. 217-247. The data file Finland.csv is a comma-separated ASCII file in DOS format. It is zipped in the file finland.zip. The Finnish electricity distribution data are from 2008-2014. This dataset is a balanced panel on 73 distribution operators (firms). The dataset contains 511 observations and 21 variables. For detailed description of the data, please see Section 5 of the paper. variable The labels of variables *************************************** id Identifier company Netzbetreiber year Year opex total operating cost (OPEX) adjusted for inflation capex CAPEX Replacement Value kah Outage cost (cost of service disruption) length network length numberuser number of customers kv4 0.4 kV total unweighted kv70 1-70 kV total unweighted kv110 110 kV total unweighted energy Gelieferte Energie lnopex logarithms of opex lncapex logarithms ofcapex lnlength logarithms oflength lnnumberuser logarithms ofnumberuser lnenergy logarithms ofenergy cpi Verbraucherpreisindex 2008=100 t t=1,2,.. (t= year - 2017) loutage logarithms of outage cost mloutage mean of loutage