Biodigester system does not have exact lifespan but is expected to last upto 30 years..
.The cost of a Biodigester varies depending on the number of users. The cost can range from Ksh. 70,000 -500,000 for domestic and commercial biodigesters.
Production of Biogas requires substantial amount of waste. Domestic Biodigester will not be able to produce a Bio gas that is economical.