Blueprint: Village Hillside Gravity Store — 25 kWh per Night at 50 m Head (from DOI 10.5281/zenodo.24108475)

DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. A manufacturable blueprint package for the surviving village variant of the gravity store in DOI 10.5281/zenodo.24108475: a hillside rail shared by about five typical homes, delivering 25 kWh per night from a 50 m vertical rise, using a 235.8 tonne rubble-concrete carriage mass at 2,400 kg/m3 (98.24 m3), a 5.0 kW geared motor-generator discharging over five hours, round-trip efficiency 60.6 percent (41.3 kWh in for 25 kWh out), no self-discharge, and a costed build estimate of $55,223 giving $0.324 per delivered kWh over 30 years and 9,900 cycles — below lead-acid ($0.375-$0.458) and about twice lithium iron phosphate. The household case is printed at full size on the face: delivering 5 kWh from a 10 m tower needs 235.8 tonnes and costs $1.962 per kWh, and is not built under this blueprint. The package gives a bill of materials at component-class level with market-typical specifications and no model numbers, sizing and installation rules, a construction sequence, commissioning and acceptance tests with pass figures from the source, operating limits, safety requirements for a suspended and rail-borne mass, and failure modes at full size. Nothing was built or tested.