Grid-scale battery storage went from research curiosity to deployed infrastructure in roughly a decade, and the engineering is more interesting than the headlines about MWh capacity. We walk container BESS architecture, the frequency-response and arbitrage revenue streams, the BMS and PCS sitting between cells and the grid, what Hornsdale and Moss Landing actually proved, and the honest economics versus pumped hydro.
Power
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Grid-Scale Storage -
Tech and Travel: Must-Haves and Dead Weight An opinionated, weight-aware breakdown of the tech that earns its slot in a carry-on versus the gear that ends up in the hotel safe untouched. Power, audio, connectivity, storage, recovery, and the categories where redundancy is worth its weight versus the ones where it is theater.
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Battery Chemistry Compared: LiFePO4, NMC, and Lead-Acid What actually happens at the electrodes of LiFePO4, NMC, and lead-acid cells, and how those electrochemical realities drive every practical trade-off: energy density, cycle life, thermal stability, cost, and which chemistry wins in which application.
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The Thermodynamics of Cooling Your Rack Every watt your homelab consumes becomes heat, and heat physics — not marketing — dictates whether your equipment lives or throttles. From Q = m·Cp·ΔT and CFM math to heatsink fin geometry, airflow management, liquid cooling, and PUE thinking applied at home: a working engineer's guide to the thermodynamics of the rack.
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Measuring What Your Homelab Actually Costs How to find your homelab's real power draw and turn it into honest dollar figures: plug meters, Tasmota smart plugs, used enterprise PDUs, CT-clamp monitors, the Home Assistant energy dashboard, and the math from watts to your actual marginal rate.
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Solar and Battery Backup for Network Gear: A Reality Check An honest engineering assessment of running homelab and network equipment on solar and batteries: load math, panel sizing with real capacity factors, LiFePO4 vs NMC vs lead-acid, DC-direct distribution, power stations as UPS, and the payback math that usually does not work.
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UPS Sizing and NUT for the Homelab: Graceful Shutdown Done Right How to actually size a UPS for a homelab rack — VA vs watts, sine waves, runtime math — and a full Network UPS Tools walkthrough: drivers, upsd, primary/secondary upsmon, shutdown sequencing across Proxmox and TrueNAS, and testing discipline.
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Why Your Homelab Burns 300W Doing Nothing Where 300W of idle homelab power actually goes, and how to claw most of it back: C-states, ASPM, powertop, HDD spindown, BIOS settings, consolidation onto mini-PCs, and scheduled wake-on-LAN — with the savings math worked out at real electricity prices.
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Running a Homelab on a Power Budget How to run a capable homelab without a punishing electric bill — measuring real draw, picking efficient low-idle hardware, consolidating workloads, and the power-versus-capability tradeoffs that show up on the first monthly statement.
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Homelab Hardware Guide: Mini PCs, Used Enterprise Gear, NAS Picks, and Power A comprehensive hardware guide for homelabbers at every level — covering mini PCs, used enterprise servers, NAS platforms, networking gear, rack vs desktop tradeoffs, power consumption math, and tiered starter build recommendations.