Modern Energy Cooking Services (MECS) is a research and innovation programme funded by the Foreign, Commonwealth and Development Office (FCDO) that seeks to accelerate the uptake of clean and modern cooking practices in Africa, South Asia, and the Indo Pacific. It develops research on modern energy cooking services (including on socio-economic and technical innovations in the sector), it funds pilots to scale-up new clean cooking technologies and business models in developing countries, it conducts policy research to inform and influence countries and key stakeholders to adopt principles around MECS in their own strategies and planning, and it funds World Bank-led global tracking tools around modern energy cooking. MECS leads the ‘Modern Cooking’ Ayrton Challenge.