Serlui B dam, is an earthfill and gravity dam on the Serlui river 12 km from Bilkhawthlir Village near the Kolasib district in the state of Mizoram in India.

Serlui B Dam has three units, each with a capacity to generate 4 MW of power .

[1] Construction on the dam with 12 MW hydroelectric power station began in 2003 and was completed in 2009 but there were some leakages which delayed commissioning of the Hydel Project.

Serlui B Dam has been constructed by Bharat Heavy Electricals Limited and Metallurgical Electrical Consultant India Ltd. Plans were made by the Mizoram Tourism Department to develop tourist infrastructure since the area near the dam is thickly forested with a 53 km scenic lake in the middle of it.

[5] The state Government of Mizoram has received over 45 lakhs as revenue for 5 years.