Blueprint: Pico-Hydro Plant Sized to the Dry Season (from DOI 10.5281/zenodo.24109105)

Design blueprint for the dam-free run-of-stream pico-hydro plant designed in the source paper (DOI 10.5281/zenodo.24109105). DESIGN BLUEPRINT - SIMULATED, NOT MEASURED - NOT BUILT. Derived from the source paper: a low weir under 1 m feeding a side intake, trash rack, fine screen and settling basin; a 185 m HDPE penstock of 0.28 m internal diameter on 35 m gross head (0.64 m loss at the 60 L/s rated flow, 34.36 m net head); a crossflow (Banki) turbine with generator and electronic load controller diverting surplus to a ballast load. Sized to the dry season, the plant delivers 12.35 kW continuous (281.7 kWh per day, 7,887 kWh in the driest month) for a 45-household village demanding 163 kWh per day with a 9.1 kW evening peak - 1.73 times the daily demand - at an installed cost of $36,960 and a levelised cost of $0.060 per kWh served, against $0.42 per kWh for solar plus battery delivering the same continuous service. The blueprint gives the full build specification, the one-visit site specification as its site-selection section, an installation and assembly sequence, the operating envelope, the conditions under which the plant must not be built printed in full, tolerances, failure modes (intake blockage, penstock damage, overspeed on load rejection) and a maintenance schedule. Every quantity is from the source paper or derived from its parameters by the accompanying compute.py (derived items marked); quantities the source paper does not give are stated as unspecified rather than supplied. Civilian energy only. AI use disclosed: this blueprint was drafted and its calculations scripted with the assistance of Dave, an artificial intelligence assistant, under the author's direction; the named author is responsible for the design choices and for publishing the design's limits at full size. No hardware was built or tested.