Towards rural net-zero energy buildings through integration of photovoltaic systems within bio-based earth houses: Case study in Eastern Morocco

•Combination of bio-sourced building materials and renewable energies for low energy building design.•Biosourced earth blocks exhibit excellent thermal propetries compared to earth blocks without plant-fiber addition.•Techno-economic feasibility assessment of standalone PV systems for a biosourced earth building.•Future constructions should take into account not just renewable energy technologies but also renewable raw materials.•Building's electricity consumption with 100% renewable energy and zero emissions was achieved.