Firewood collection is main driver of deforestation and forest degradation in many South Asian countries. The study assessed the firewood consumption, emission of CO2e, adoption process and sustained use of Traditional Three- Stone Cook Stoves (TCS) and Rocket Stoves (RS) by local communities living in Khar Village Development Committee, Darchula District, Kailash Sacred Landscape (KSL)-Nepal. Households involved in processing of fiber from Himalayan giant nettle (Girardinia diversifolia (Link) Friis) locally known as Allo were selected for study. Firewood consumed by TCS was 3.68 Tons per year per household and the firewood consumed after the use of Rocket Stove (RS) was 2.706 Tons per year per household. Firewood consumption was significantly reduced and savings was of 974 kg per household per year. The reduction in emission of CO2e would be 1782.42 kg per household per year. About 96.6 per cent of the people in Khar VDC collect Quercus lanata and Persea odoratissima as major firewood species to meet their energy needs. The excessive use of these species for cooking was found as the main cause of resource depletion in forest. This study concluded that the use of RS could be one of the good choices to reduce firewood consumption and CO2e emission reduction.