Responding to sectarian terrorist attacks and the rise of ISIL, Shia militias have carried out violent reprisals against Sunni civilians. On 10 June Amnesty International reported that a Yazidi militia killed 21 Sunni civilians and abducted another 40 in Jiri and Sibaya villages, Sinjar.
Cost â Biomass versus conventional boilers. Biomass boilers start at about Â£7,000 for a 12kW domestic version â which is sufficient to provide heat and hot water for a 4-bed house.A comparable sized gas boiler will only cost Â£2500 to install. A bigger biomass boiler with an auto-feed hopper may cost closer to Â£12,000.ost â Biomass versus conventional boilers. Biomass boilers start at about Â£7,000 for a 12kW domestic version â which is sufficient to provide heat and hot water for a 4-bed house.
1 However, higher efficiency means lower monthly bills, so the cost may average out. 2  Replacing gas boilers range from $2,000 to $5,000 on average. 3  With additional modifications, it is possible for the price to leap up to as much as $7,500 to $9,000.