Why costs have increased. The New Zealand Emissions Trading Scheme (NZ ETS) is the Government's main tool for reducing greenhouse gas emissions. HotCopper has news, discussion, prices and market data on CLEANAWAY WASTE MANAGEMENT LIMITED. Join the HotCopper ASX share market forum 19 Feb 2020 Cleanaway Waste Management (ASX: CWY) impressed investors this morning with underlying profit had risen (excluding AASB 16) despite lower commodity prices. Get notified of the latest news, events and stock alerts. supply deal with global nutritional group, opens second NZ manufacturing plant.