​This study produces a technical and economic analysis of a farm- fed biogas plant that

utilizes cow manure to produce electricity and heat via combined heat and power unit.

The electricity generated is directly injected into the grid while heat is used within the

biogas plant. The biogas system design was done depending on number of cows in the

farm, which denotes the amount of manure available as feedstock. The economic

performance of the proposed biogas plant was evaluated using various economic

indicators. The levelized cost of electricity and the avoided greenhouse gas emissions

were calculated too. The preliminary design and economic feasibility results proved the

profitability of the manure-based biogas systems on wide range of farm sizes. The net

present values of a 100-cow, 500-cow, 1000-cow, 1500-cow and 2000-cow farms were

all positive. The internal rate of return values were 11%, 12%, 13%, 16% and 17%

respectively, and the levelized cost of electricity values were 0.071, 0.069, 0.064, 0.055

and 0.055 JOD/kWh respectively. The study also produced a design for a centralized

anaerobic digestion plant depending on Jordan resources. The government role in

promoting biogas-based electricity was discussed too.