Kalpataru Power Transmission Limited (KPTL) on Thursday completed the acquisition of the remaining 15 per cent stake in Sweden-based engineering procurement and construction company Linjemontage i Grastrop AB for USD 11.5 million (around Rs 91 crore). With this, Kalpataru Power Transmission completed the acquisition of the Swedish firm which has been engaged in power transmission and distribution, substation and O&M (Operation & Maintenance) of electricity network service.