This paper uses Data Envelopment Analysis tocompute input-based technical efficiencymeasures and CO2 and energy technicalefficiency of specialised vegetable firms inthe Netherlands over the period 1991–1995. Input-based scale efficiency is also calculatedfor each firm. These efficiency measures aregenerated for firms with different heatingtechnologies. The empirical results indicatethat firms use energy quite efficiently and areless efficient in terms of CO2 emissions. Differences in CO2 (energy) efficiencyacross different technologies are (not)statistically significant. In particular,firms using traditional heating technologiesare less efficient in terms of CO2. Scaleadjustments can provide an importantcontribution to further efficiencyimprovements. Copyright Kluwer Academic Publishers 2003
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