13. 1) E – Energy Autonomy
E · Energy Autonomy = “How much firm, islandable power do we sustain locally — and for how long?” (firm capacity & ride-through duration)
Energy Autonomy is the quiet drum under everything else. Firm baseload that does not flinch, storage that rides through weather and work, and micro-grids that island without drama. What moves it are the unglamorous choices: sizing storage for the worst fortnight you will actually see, dust discipline, thermal housekeeping, and black-start competence that reads like choreography. Proof is in ride-through days under simulated storms, two clean black-starts in one quarter, and inverter fleets that do not share a single point of failure. Failure smells like synchronized curtailment and “paper storage” that is a spreadsheet, not a battery.
Quick Heuristic: E vs S (Shock Isolation Resilience) can be confused. Best analogy: Engine vs fuel tank + spare belts. E is whether the engine runs islanded and black-starts on cue. S is how long you keep moving with no resupply and what breaks first. Test: Are you adding generation/controls (E) or buffers/spares & drought drills (S)?
Cross-pillar ties to E: L depends on fast, stable E power loops; M needs clean E power quality for metrology; S sizes buffers and plans havens from E’s outage statistics; R demands E cold-iron starts; G logs lawful E load-shed orders; P rostering covers night-shift E black-starts.
Lesson Learnt: Do not optimize in E what should not exist yet. Early teams shaved percentage points off PV losses while feeding parasitic, always-on loads and sharing a single inverter family. We learned to delete and despec first: retire “nice-to-have” loads, define critical load menus by hour, and separate “must ride through” from “can pause.” Only then does optimization (round-trip efficiency, MPPT finesse, battery chemistry choice) matter. The metric that mattered most was firm headroom at the inverter bus during the worst two-week weather window we actually saw, not “nameplate MW.”
Misjudged Initially:
Equated nameplate with survivability and ignored grid-forming electronics as the real single points.
Treated storage as a scalar (“MWh”) instead of a duration matched to critical loads with black-start constraints.
Undervalued thermal storage (heat ≠ electrons) and dust discipline as energy systems.
Qs to Ask:
Which non-critical loads did you delete permanently before optimizing anything?
What is your worst-fortnight ride-through at critical load, and which inverter SKU fails that plan?
How often did you practice dark, and what changed after the last failed drill?
Port Harmonia, Mars (Year 94 Mars Human Era)
Here is an example of Port Harmonia’s Energy Autonomy MIS in the early third century HE:
E≈0.25(1.0)+0.20(1.0)+0.15(0.72)+0.15(0.85)+0.15(0.8)+0.10(0.6)≈0.87
Calculations:
Ecap = 1.0 Critical peak = 5 MW; firm capacity (nuclear + storage credit) = 7.5 MW
Estore = 1.0 Storage = 600 MWh ⇒ 120 h at 5 MW
Emix ≈ 0.72 Delivered energy shares: PV 64.5%, nuclear 19.4%, wind 6.5%, CHP 9.7%
Eisland = 0.85 Islanding: 90% of critical load islandable; 80% on islands with ≥2 sources
Eblack = 0.8 Black-start: surprise under adverse conditions passed
Esupply = 0.6 Input sovereignty: ISRU fuels strong; local power-electronics repair reasonable
Combine (weights sum to 1)
Simplified starting weights for E sub-scores (tuneable, disclosed):
Interpretation:
E < 0.4 — Adequacy fragile; single-source or no black-start.
0.4 – 0.7 — Solid base; can ride multi-day lulls; diversity emerging.
> 0.7 — Robust, islandable, black-start proven; input dependencies managed.