Solar Power — SolarAI LLM Server V2

The array

Component	Spec	Notes
PV capacity	28.94kW DC total	24.14kW DC tied to twin 10kW SolarEdge inverters; 4.8kW DC coupled directly into the XW systems
Modules	91 panels, ~330W average	Ground mount installed 2017, roof mount 2019. Solar on pretty much everything.
Inverters	3x Schneider XW6848	AC-coupled together for power sharing — the microgrid's muscle
Monitoring	eGauge circuit-level system	Every circuit metered. The server's kilowatts are visible down to the outlet.
Grid relationship	1:1 net metering (Maryland)	The grid is the seasonal battery: bank ~5MWh each summer, draw it back in winter.

The battery bank — 85kWh, four systems that share

System	Chemistry	Capacity
Grid Former	DIY LFP — 1x 20kWh + 2x 5kWh	30kWh
Data Center UPS	1x 5kWh Fortress LFP + 1x 10kWh Deye LFP	15kWh
Workshop	1x DEKA Unigy II AGM	40kWh
Electric car	2023 Hyundai Kona EV (60kWh) with 12V-48V DC converter for charging house batteries	+60kWh on wheels

85kWh stationary, and they all share. The 20kWh DIY LFP stack runs a custom BMS; the 2026 units pack 10kWh into a third of the volume of the 2014 batteries. The workshop's 40kWh of lead-acid is the heavy, dumb, dependable layer under everything.

What this means for the server

The server is ~5% of the array. V2 pulls 1.2–1.4kW under full inference load. The array makes up to 28.94kW. One panel field, one machine.
~60 hours on batteries alone. 85kWh of storage against a 1.4kW load. The rig outlasts a Maryland weekend with zero sun.
A dedicated UPS layer. The 15kWh Data Center UPS (Fortress + Deye LFP) is the clean shelf the server sits on.
$0.00 per token. The system paid for itself in October 2023. Sunlight has no invoice. Electric bill: about $6 a month, and SREC plus utility payments come back as cash.
Efficiency stack. Heat pump water heater, inverter mini-split HVAC, dual-stage central HVAC, extra blown insulation — the house sips so the server can run.

$0.00 / token

The number the whole project exists to produce. Cloud APIs rent intelligence; this one generates it from sunshine.

Photos of the array, the LFP stacks, the BMS under load, the eGauge dashboard, and the whole microgrid: lydie.cc/solar.html