100 kg of a certain substrate with TS 20% and VS 80% (of TS) can generate 0.3 m^3 biogas / kgVS. How much energy can we extract from the gas, as we know that the biogas produced has a methane content of 65% and that 1 m^3 CH4 has an energy content of 10 kWh. Answer in kWh and to one decimal place.