Zeepipe CCGT liquefied LNG Kollsnes Camisea terajoules cubic Kovykta FLAGS Mbbl unflued Vesterled tmc MIDAL Yadana megawatts mmtpa regasification desulfurization 1Qp115 butanes MW scf Cilindro Urengoy RasGas Nyhamna deliverability m3 KWh Medgaz Chhatak 150MW flue 50MW 404Qc000