Cooking/heating stoves; Global and regional perspective, data gaps and other challenges Z. Klimont (klimont@iiasa.ac.at) Summit on Black Carbon and Other Emissions from Combined Cooking+Heating and Coal Heating Stoves A joint initiative of the CCAC, ICCI, GACC, and the Government of Poland May 29 -30, 2017, Warsaw, Poland

‘Facts’ about data used in the models Often ambiguous definition of split between cooking and heating stoves (in some regions distinction not possible); Very little if any data exists on combined cooking+heating stoves and their use Some models use fairly detailed split of residential heating; boilers, stoves, fireplaces, but data scarce…even worse when it comes to the actual technology used Sustainability of fuelwood supply often ignored; how much do we know about it?

Global PM2.5 emissions, Tg Highlighting the role of residential combustion Source: GAINS model (IIASA); Baseline energy scenario from the World Energy Outlook 2011 (IEA)

Arctic warming per unit emissions; Unit: °C/Tg(yr)-1 Source: AMAP Assessment, 2015 Per unit emission, the high-latitude sources are more efficient Domestic Ene+ Ind+Waste Transport Agr. Waste burning Forest fires Flaring Sector order ->

Change in PM2.5 emissions from residential combustion 2030 ‘Reference’ and ‘Climate stabilization (450ppm)’ relative to emissions in 2000 (100%) Source: GAINS model (IIASA); Energy scenarios from World Energy Outlook 2009 (IEA, 2009) ---------------- Primarily heating ------------- ---- Primarily cooking ----

Preliminary gaps, data needs, and next steps from Warsaw Stove Summit white papers Combined stoves have received less attention than cooking-only stoves in developing countries and wood heating in Europe and U.S. Who is using coal heating stoves and combined cooking/heating stoves around the world? How much do coal heating stoves and combined cooking/heating stoves contribute to household air pollution, ambient air pollution, and associated health, climate, and environmental impacts? How much do solid fuel heating stoves contribute to the global burden of disease from household and ambient air pollution? Under development: gaps, needs, and next steps for developing technological, policy, and finance solutions