Over the last 10 years, the lowest oil prices were recorded in 2015 on prevailing low costs in the global market.
In 2011, the Arab Spring uprising and the civil war in Libya led to a reduction in global fuel supply, which led to a peak in fuel prices that year.
General prices were high in the global markets that year also as a result of increased demand from emerging markets including China.
Low global prices led to a fall in cost of fuel in 2015. For most of 2016, a global oversupply in fuel kept prices down .
The cost of charcoal, however, has risen continuously over the years as the source of wood dwindled and transportation costs kept rising.
Increased surveillance by the Kenya Forest Services on illegal charcoal burning in gazetted forests has also led to higher prices.