RT null T1 Coal-fired power plant efficiency improvement in India A1 United Nations Environment Programme, PB IEA Clean Coal Center YR 2015 FD 2015-11 LK https://wedocs.unep.org/handle/20.500.11822/13897 UL https://wedocs.unep.org/handle/20.500.11822/13897 NO Coal-fired power plant efficiency improvement in India DS UN Environment Document Repository RD Sep 22, 2026