OFF-GRID POWER
PHOTONS IN · RADIO WAVES OUT
Evvoia island · fully autonomous broadcast · decision history + live state
BUILD BLUEPRINT v7
2026-11-06 · audited freeze
The locked system: 3× DatouBoss 48V/314Ah on a shared bus, 4× BlueSolar MPPT 150/45 (non-Smart, RF hygiene), 3× Studer XTH 8000-48, combiner doctrine over the 30m run. String accounting, cable sizes, EMC implementation, build checklist.
OPEN BLUEPRINT ◌ ARCHIVEBATTERY CHEMISTRY DECISION
2026-11-02 · superseded by blueprint v7
The original 20-year chemistry shootout: LiFePO4 vs NiFe vs Gel vs Flooded. Conclusion unchanged and inherited by v7 — only the vendor changed (Deye → DatouBoss). Kept as the decision record.
OPEN ARCHIVE ◉ LIVEPLAN GAGE
2026-11-07 · six rungs · ENTRY → 👑 KING MODE
The load ladder gaged against the v7 fleet: daily kWh per rung vs same-day harvest, peak draw vs the 21 kVA Studer wall, bank autonomy when the clouds hold 30% light. Click a rung, the gage recalculates. Ladder law included: climb when the sky pays, drop a rung when it doesn't.
CLIMB THE LADDER ◉ READYWIRING SCHEMATIC
v8.1 · 3 strings per MPPT · matches the buylist
One-page shared-bus topology: 12 PV strings → 4 combiners (gPV + SD63 + SPD) → 30m 25 mm² bundles → 4× BlueSolar 150/60-Tr → charge busbar; 3× DatouBoss packs → NH1/NH00 aR fuses → busbar; 95 mm² taps to the Studers. CRT-skinned SVG, v8.1 string accounting.
OPEN SCHEMATIC ◉ READY TO ORDERSHOPPING LIST — BUYLIST v10.5
2026-11-12 · ~95% Greek · Phase 1
Phase 1 buy order matching wiring v8: 4× BlueSolar 150/60-Tr (checkout gate: SCC010060200, no Smart, no MC4), 8× ABB SD63 disconnects, NH00 80A aR leg fuses + NH1 250A aR pack backstop, Legrand 500A busbar, 25/95 mm² copper, earth kit. Supplier links, prices and open counter verdicts. PV combiner phase deferred, not skipped.
OPEN BUYLIST ◌ RESERVEDLIVE TELEMETRY
stub — lights up when the packs land
Reserved slot for real-time state: bus voltage, pack health, per-MPPT harvest, load profile, EMC sweep log. Will render from the Studer/MPPT data stream once the build is commissioned.
COMING ONLINE ◌ RESERVEDBUILD LOG
stub — first entry when copper hits the trench
Chronological build diary: orders, trenching, termination, SDR sweeps, commissioning days. The human-readable history of going dark-grid.
FIRST ENTRY SOONSYSTEM STATE
Snapshot 2026-11-06 · updates as stages complete
TARGET STATE — THE NUMBERS
What "off-grid" means for Avantida, quantified
- 48 kWh storage on one shared 48V DC bus — matches what the old 46 kWh-usable lead-acid bank actually delivered, at ~12% of its lifetime cost.
- 6.4 kW harvest baseline, ceiling 10.4 kW with the locked fleet, 19.2 kW with two more MPPTs. Doubling to 24 panels is the comfortable winter-autonomy move (~19–20 kWh/day).
- 21 kVA continuous inversion across three Studers — parallel on one comm bus, 63 kVA theoretical 5-sec surge.
- RF hygiene: no Bluetooth beacons, non-Smart controllers, CMC + bulkhead doctrine, measurement-driven filtering. Quiet spectrum for the receivers.
- Expansion without regret: every stage reuses the fleet — pack slots up to 15, PV ceiling 19.2 kW, battery topology switchable by rewiring alone.