Reliable　access　to　electricity　is　still　a　serious　problem　for　remote　villages,　however,　abundant　solar　radiation　and　biomass　have　the　potentials　to　provide　energy　supply　in　a　sustainable　way.　This　paper　focuses　on　the　optimal　design　and　techno-economic　analysis　of　the　stand-alone　hybrid　energy　system　for　a　typical　rural　village　in　the　northwest　of　China.　Based　on　the　estimation　of　local　renewable　energy　potential　and　the　investigation　of　heat　and　power　consumption　patterns,　a　mixed-integer　linear　programming　optimization　model　is　presented　with　the　aim　of　minimum　total　annualized　cost.　The　techno-economic　analysis　of　different　system　configurations　is　conducted　and　compared.　Particularly,　the　levelized　cost　of　energy　production　and　levelized　cost　of　energy　consumption　is　proposed　to　evaluate　the　economic-cost　of　energy　from　both　supply　and　demand-side　respectively.　Furthermore,　sensitivity　analysis　and　scenario　analysis　is　conducted　to　demonstrate　the　influences　of　the　variations　and　uncertain　environmental　policy　on　total　system　cost　and　performance.　The　results　demonstrate　that　the　PV/biomass-CHP/diesel　generator/gas　boiler/battery/thermal　energy　storage　hybrid　energy　system　is　the　most　economical　option　with　a　total　annualized　cost　of　652　x　10(3)　$.　The　levelized　cost　of　energy　consumption　(0.355　$/kWh)　is　greater　than　that　of　energy　production　(0.275　$/kWh),　implying　a　great　potential　for　local　electrification　and　more　flexible　heat/power　output　equipment.　(C)　2021　Elsevier　Ltd.　All　rights　reserved.