Power continuity under armed conflict

Armed conflict kills and displaces civilians in every region of the world, and when it arrives the question is not whether to have electricity but whether your attempts to maintain it will draw the wrong kind of attention, kill someone with carbon monoxide, start a fire, or expose your household to theft and violence. Keeping a household powered during bombardment, occupation, or siege is not a tactical problem — it is a life-safety and civil-compliance problem, and the solutions are the same whether you are a family in a besieged city or a household managing a grid-down event under heightened neighborhood risk.

This page is the energy half of the active-conflict survival picture. The sister page — Active conflict: civilian safety and aid access — covers the full civilian-protection framework. Read it first. This page adds the power-specific layer: generator noise discipline, blackout-order compliance, fuel management, battery-first nighttime operation, medical-device continuity, and cable safety. It is anchored to civilian life-safety, not to paramilitary tradecraft.

Educational use only

This page is for educational purposes only. Hands-on skills should be learned and practiced under qualified supervision before relying on them in emergencies. Use this information at your own risk.

Scope of this page — civilian protection under armed conflict

This page covers civilian power continuity under bombardment, blackout order, occupation, evacuation delay, or looting risk. It applies International Humanitarian Law (IHL) framing per ICRC Customary Rule 22 "Precautions against the Effects of Attacks" (Geneva Conventions Additional Protocol I, Article 58).

This page does NOT cover:

Counter-IR, thermal masking, or signature reduction against military sensors
RF emission discipline, RF spoofing, or anti-drone tactics
State-actor surveillance evasion, checkpoint avoidance, or patrol detection
Concealment diagrams, observer standoff calculations, or drone field-of-view math
Power systems for combat operations, weapons maintenance, or armed-group logistics

Survipedia covers civilian protection under armed conflict because survival is the mission. Combatant tradecraft is out of scope — permanently and explicitly. For ICRC IHL doctrine, see Conduct of Hostilities and Protection of Civilians and Customary Rule 22.

Before you start

Read Active conflict — civilian survival before this page; the threat context, evacuation decision framework, and family communication plan there are prerequisites for everything here

Confirm you have working UL 2034-listed CO alarms in every sleeping space — battery-powered, tested within the past 30 days, and within manufacturer service life (typically 7–10 years from manufacture date, per UL 2034 standard requirements; check the device label for its specific end-of-life date)

Confirm any generator will be positioned and operated outdoors at minimum 20 feet (6 m) from all doors, windows, and vents per CDC generator CO safety guidance

Understand your local blackout-order requirements — civil-defense authorities issue these under conflict conditions; compliance is both a life-safety measure and a legal obligation

Complete a critical-load inventory (see Generators and Batteries) before any conflict escalation reaches your area; doing this under pressure leads to under-sizing and avoidable failures

Action block

Do this first: Test every CO alarm in each sleeping space by pressing the test button until it chirps (active time: 5 minutes per alarm) Time required: Active: 45 minutes for audit; 2–4 hours to configure battery-first nighttime scheduling; ongoing: monthly fuel rotation Cost range: Affordable for CO alarms + fuel containers; moderate investment for a portable power station with sufficient capacity; significant investment for a home battery system Skill level: Beginner for CO alarm placement and fuel rotation; intermediate for battery-first load scheduling and generator noise mitigation Tools and supplies: Tools: multimeter, extension-cord tester. Supplies: UL 2034 CO alarms (one per sleeping space), approved fuel containers (UL 1313 plastic or UL 80 metal), blackout curtains or heavy fabric, battery-powered task lighting (red or amber LED). Infrastructure: portable power station or home battery bank, transfer switch or generator interlock kit per NEC 702. Safety warnings: See Carbon monoxide — the silent casualty below — CO is the leading avoidable energy-related death under siege conditions

Generator audibility — what your noise signals

A running generator is a sound-emitting beacon. In most civilian contexts this is irrelevant — your neighbors already know you have a generator. Under siege or occupation, that information reaches a wider and potentially dangerous audience.

The Honda EU2200i — one of the quietest inverter generators widely available — is rated at 57 dBA at full load and 48 dBA at quarter load per Honda manufacturer specifications. For reference, normal conversation measures approximately 60 dBA; a suburban backyard at night typically measures 35–45 dBA. At 57 dBA in a quiet nighttime environment, an inverter generator is audible at 300 meters (985 ft) or more under calm conditions. Conventional portable generators in the 5,000–7,000 W range typically produce 67–75 dBA at 23 feet (7 m) — closer to a lawnmower — audible considerably further.

This is not primarily a tactical consideration. It is a neighbor-relations problem, a civil-compliance problem, and a theft-risk problem. The same mitigations that make you a considerate neighbor also reduce the profile of a running generator under any elevated-risk condition.

Mitigations that preserve safety:

Choose an inverter generator over a conventional unit. Inverter generators throttle engine speed to match load, producing 10–15 dB less noise at partial loads — the most common operating point. The Champion 100302 is rated 56 dBA; the Westinghouse iGen2500 at 52 dBA at 25% load. Inverter units also produce clean power (total harmonic distortion below 3%) suitable for sensitive electronics and medical devices.
Schedule generator runs during higher-ambient-noise windows — afternoon traffic, mid-morning activity, daytime hours when your community is already generating background noise. Avoid running a generator between 10 PM and 6 AM under any circumstances where noise discipline matters.
Battery-first at night (see the full strategy in the battery-first operation section). Charge the battery bank with the generator during the day; run silent inverter loads at night. This eliminates nighttime generator use entirely.
Acoustic baffle enclosures can reduce audible noise by 5–10 dB. A correctly built enclosure uses sound-absorbing material (dense foam or fiberglass batting) inside a ventilated cabinet or three-sided box. Critical safety rule: any enclosure must provide unobstructed airflow through and out of the exhaust side. An enclosed generator with restricted exhaust creates carbon monoxide backpressure into the enclosure and can cause CO to accumulate around the unit and drift back toward your structure. Bury the exhaust path — never. Partially obstruct exhaust airflow — never. If you cannot build a well-ventilated enclosure, distance and scheduling are safer than an improvised box.
Add distance between the generator and your sleeping spaces. A generator placed 50 feet (15 m) from a bedroom versus 15 feet (4.6 m) from it reduces apparent noise significantly. This also increases the CO-safe buffer beyond the 20-foot (6 m) minimum.
Extend cords rather than moving the generator closer. A 10-gauge, 30-amp, SOOW-rated extension cord rated for outdoor use can safely carry generator output up to 50 feet (15 m) with minimal voltage drop on typical household loads. Use the cord length; keep the generator further away.

Generator type	Noise at full load	Noise at 25% load	Best use case
Honda EU2200i inverter	57 dBA	48 dBA	Sensitive electronics, CPAP, nighttime charging
Westinghouse iGen2500 inverter	57 dBA	52 dBA	Similar to EU2200i
Champion 3500W conventional	68 dBA	~65 dBA	Well pumps, shop tools, high-load daytime
Standby (propane/NG)	62–68 dBA	Varies by load	Automatic whole-home backup

Carbon monoxide — the silent casualty

Per CDC and CPSC data, carbon monoxide poisoning from generators kills approximately 100 people per year in the United States — most of them during weather emergencies and post-disaster conditions when people move generators into enclosed spaces to protect them from weather, reduce noise, or keep them out of sight. Under conflict conditions, the same impulse — move the generator inside or under cover — becomes even more tempting and even more dangerous.

CO is odorless, colorless, and lethal at 800 ppm within 2–3 hours. The generator enclosure you build to reduce noise will kill you if you build it wrong. The garage that seems ventilated because the door is open is not safe. A generator on a covered balcony or under a carport with walls on three sides is not safe.

Non-negotiable rules:

Position the generator outdoors, at minimum 20 feet (6 m) from every door, window, and vent — in all directions, including the roof line if the generator exhaust points upward. This distance is per CDC guidance for portable generators.
Never operate in a garage, even with the door fully open — CO accumulates faster than it disperses.
Never operate on an enclosed balcony, in a basement, in a crawl space, or in any structure with walls on more than two sides.
Direct exhaust away from doors, windows, and air intakes — typically pointing the exhaust end of the generator away from the structure.
Install UL 2034-listed CO alarms on every floor and in every sleeping space. Battery-powered units are preferable to plug-in units during a grid-down scenario; a dead battery defeats the purpose.
Test alarms before any event and monthly during extended operation. Replace alarms that are past their manufacturer end-of-life date (most are rated 7–10 years; check the label).
If a CO alarm activates — evacuate immediately. Get to fresh air outdoors. Call 911. Do not re-enter until the building has been cleared. Do not assume it was a false alarm.

Stop conditions for CO exposure

Any of these requires immediate action: CO alarm activation (any alarm in any room), smell of exhaust indoors or near sleeping spaces, headache + dizziness + nausea in anyone in the household, anyone who cannot be woken. These are medical emergencies. Evacuate first; troubleshoot second.

Blackout-order compliance and light discipline

Civil defense authorities issue blackout orders during conflict to reduce civilian exposure to targeting by visual or airborne observation, and to prevent interference with civil defense response operations. Compliance is legally required, but it is also a practical life-safety measure — a lit window in a blacked-out neighborhood is an anomaly.

Practical blackout implementation:

Install blackout curtains — heavy opaque fabric on every window. Cotton or wool curtains block more light than synthetic fabrics; polyester is thinner and transmits more light. The curtain must cover the window edge-to-edge with no gap at the sides or sill — a narrow stripe of light at the curtain edge is sufficient to be visible from outside.
Test from outside at night — before the blackout window begins, turn on your interior lighting and walk the perimeter of your dwelling. Identify every light leak. Seal gaps with dark tape or additional fabric. This is the most reliable test because you see exactly what an outside observer sees.
Switch to low-lumen interior task lighting. A room does not need overhead lighting to be functional during routine evening activities. Battery-powered LED lanterns at 5–15 lumens are enough for most tasks; a headlamp with a red-light mode is adequate for movement and reading. Red and amber light preserve night vision and transmit less through curtain fabric than white light.
Eliminate all outdoor lighting. Motion-activated security floodlights, porch lights, vehicle interior lights visible through windows, and garage lights are all prohibited during a declared blackout. Disable automated systems.
Manage vehicle lighting. If movement is necessary during a blackout period, coordinate with civil defense on whether vehicle headlights are permitted; in some conflict situations, vehicles operate with lights off or with reduced running lights only.

Field note

Red light preserves dark-adapted vision (night vision) while providing enough illumination for close tasks. Carry one red-mode headlamp per household member as part of your conflict-preparation kit. Inexpensive units with red/white toggle cost a fraction of what you spend on a power station, and they are often the difference between functional movement and stumbling in total darkness.

Blackout and your energy system:

A house with a running generator and bright interior light is more visible than a dark house with no generator. If your battery-first operation is configured correctly (see battery-first operation), nighttime loads are already running silently on the battery bank. Blackout compliance and nighttime generator silence reinforce each other — both push toward the same configuration.

Cross-reference shelter lighting for general low-power lighting strategies that apply under any grid-down condition.

Fuel discipline under siege

Fuel stations become congested and dangerous during escalation events. A run to refuel during active unrest or siege conditions exposes you to exactly the threat environment you are trying to avoid. Fuel discipline means managing what you have on hand so you are not forced to make that run.

Civilian fuel management principles:

Rotation and shelf life. Untreated gasoline degrades in 3–6 months as ethanol-blend fuels phase-separate, oxygen-sensitive compounds oxidize, and volatility decreases. Treated with a fuel stabilizer such as Sta-Bil, gasoline remains usable for up to 12–24 months per manufacturer guidance, though volatility loss may begin after 12 months regardless of treatment. Diesel fuel stores for 12 months untreated and 18+ months with a biocide additive. Propane stores indefinitely in sealed cylinders.

Rotate fuel before an escalation event, not after it. Fill containers with fresh fuel, add stabilizer at the correct ratio, label with the fill date, and rotate into vehicles or equipment within the treatment window. Old fuel in your generator during an extended siege is a reliability problem at the worst possible time.

Legal storage limits. Most US jurisdictions permit residential storage of up to 25 gallons (95 L) of gasoline without a permit, with no more than 10 gallons (38 L) in an attached garage; no flammable liquids are permitted in basements per NFPA 30 and most local fire codes. These limits vary — check with your local fire marshal. Staying within legal limits protects you from civil liability and from creating an uncontrolled hazard.

Fire safety for stored fuel:

Store fuel at least 10 feet (3 m) from any ignition source — furnaces, water heaters, electrical panels, open flames
Use only approved containers: UL 1313-listed plastic containers or UL 80-listed metal containers with self-closing caps
Provide ventilation — fuel vapors are heavier than air and accumulate at floor level; do not store fuel in basement spaces
Secondary containment for any storage above 5 gallons (19 L): a tray or spill-containment barrier prevents a container failure from becoming a floor-level fuel pool

Reducing fuel-station dependence:

Under siege, each trip to a fuel station is a risk calculation. Pre-staging enough fuel for generator run-time needs (calculate daily generator hours × fuel consumption per hour at typical load) eliminates or dramatically reduces the frequency of fuel runs. An inverter generator at 25% load typically consumes 0.1–0.2 gallons (0.4–0.8 L) per hour. A 3-hour daily charging run consumes 0.3–0.6 gallons (1.1–2.3 L). At that rate, 10 gallons (38 L) on hand provides 2–4 weeks of daily charging before a fuel run is necessary.

Field note

Store fuel in the maximum approved quantity before escalation is imminent. Fuel stations empty within hours of a visible public emergency trigger. If you are buying containers and filling them at the same time as your neighbors are doing the same, you are already late. The legal residential limit of 25 gallons (95 L) is enough for weeks of critical-load generator operation if managed correctly.

Battery-first operation strategy

The central principle of conflict-period energy management is: generate during daylight using a generator or solar panels; run silent battery-powered loads at night. This strategy eliminates generator noise during the highest-risk nighttime hours, supports blackout compliance (a running generator is louder and more noticeable than a silent battery inverter), and extends fuel reserves.

Sizing the nighttime battery bank:

Calculate your nighttime critical-load watt-hours, then size the battery bank to cover them with adequate depth-of-discharge margin.

Load	Typical consumption
Refrigerator cycling	50–100 Wh per 4-hour period (approximately 1.0–1.2 kWh per 24 hr)
LED lighting (3–4 fixtures)	20–50 Wh per 4-hour period
CPAP without heat humidifier	30–60 W × 8 hr = 240–480 Wh per night
Phone and laptop charging	50–100 Wh per night
Medical devices (varies — see below)	50 Wh to several kWh depending on device

A household with a refrigerator, lighting, and one CPAP needs roughly 500–800 Wh of usable battery capacity for a single overnight period. For a LiFePO4 (lithium iron phosphate) battery with 80–90% usable depth of discharge, 1 kWh of rated capacity provides 800–900 Wh usable. For a 2-night autonomy buffer, 2–3 kWh of rated LiFePO4 capacity covers most residential nighttime loads.

Daytime charging schedule:

Run the generator during a single mid-day window — 10 AM to 2 PM is typical, when ambient noise is highest and fuel consumption per hour is acceptable. An inverter generator at 1,500–2,000 W output can fully recharge a depleted 3 kWh LiFePO4 bank in approximately 2–3 hours, accounting for charging losses. Solar panels (see solar continuity below) can handle daytime top-up or full charging without running the generator at all on good-sun days.

Portable power stations — the EcoFlow Delta Pro (3.6 kWh), Bluetti AC500 (5 kWh), and Jackery Explorer 2000 Pro (2 kWh) — are designed for exactly this use case. They accept generator input, solar input, or AC wall input; they run silently on internal batteries; and they provide AC outlets, DC outputs, and USB charging from a single device with built-in battery management. A 2–5 kWh portable power station paired with a folding solar panel provides civilian household critical-load coverage without any generator noise at night.

Home battery systems (Tesla Powerwall 13.5 kWh, Enphase IQ Battery 10T 10.28 kWh, FranklinWH aPower S 13.6 kWh) provide larger capacity and whole-home integration but require pre-installation and permitting. See home battery systems for the full NEC 706-compliant installation framework. Cross-reference batteries for the chemistry comparison table.

Medical device continuity

For households with life-sustaining medical equipment, power continuity is not a comfort question — it is a clinical one. Identify every medical device in the household, verify its power requirements, and ensure backup power capacity before any escalation.

CPAP and BiPAP:

Standard CPAP machines draw 30–60 W during operation; BiPAP machines draw 80–100 W. Most modern CPAP and BiPAP machines can be powered from DC with the manufacturer's DC cable — this is more efficient than running the machine through a 12 V-to-AC inverter because it skips the AC conversion step. DC voltage requirements vary by manufacturer, not by CPAP vs. BiPAP: Philips Respironics DreamStation and DreamStation 2 series accept 12 V DC directly via the manufacturer's DC cord, while the ResMed AirSense 10 and AirCurve 10 series require 24 V DC and use a 9–32 V DC converter accessory that boosts a 12 V source up to 24 V. Verify the specific device manual before sourcing any battery cable — generic 12 V adapters can damage the unit or fail to power it.

A standard CPAP without heated humidification running for 8 hours consumes 240–480 Wh. A 1 kWh LiFePO4 battery provides 1–3 nights of CPAP runtime depending on pressure settings. Disable the heated humidifier during battery operation — it adds 50–100 W to the draw and can cut battery runtime by 30–50%.

Oxygen concentrators:

Home oxygen concentrators are the most power-demanding common medical device. Standard stationary units draw 300–600 W continuously; energy-efficient models may draw as little as 100–150 W per the manufacturer's specifications. A 5 kWh battery bank running a 400 W concentrator provides approximately 10 hours of runtime — enough for overnight coverage plus daytime hours, but not indefinite.

For households dependent on continuous oxygen, a portable oxygen concentrator (50–150 W, battery-integrated) provides more realistic battery operation. Coordinate with the prescribing physician and equipment supplier well before any anticipated emergency to ensure an appropriate backup device is available. Keep filled oxygen cylinders as a backup for the battery-depletion period — cylinder duration depends on flow rate and tank size, but even 2–4 hours of cylinder capacity covers a generator charging run.

Insulin refrigeration:

Insulin in use can be kept at room temperature for up to 28–30 days per manufacturer guidance for most formulations — verify your specific product's guidance, as timelines vary. Insulin awaiting use should be refrigerated at 36–46°F (2–8°C). A mini-refrigerator running on battery draws approximately 150–250 Wh per 24-hour period. See cold chain management for the full medication temperature framework.

Dialysis equipment:

Home hemodialysis machines typically draw 500–1,500 W and run for 3–5 hours per session. Backup power sizing for home dialysis requires a calculation specific to the machine model and session frequency. For most home battery configurations, this is at the limit of practical battery coverage — combine battery backup for sessions with a generator charging run between sessions. Coordinate with the clinical team ahead of any anticipated grid disruption.

Cross-reference Medical-dependent household preparedness for the complete framework.

Cable safety and backfeed prevention

Generator cables in a household under siege or shelter-in-place conditions introduce hazards that do not exist in a normal outage: low-light navigation, wet ground from rain or leaking structures, unfamiliar cable routes, and improvised connections under pressure.

Trip and shock hazards:

Route cables along walls, not across walking paths. Use cable clips or tape to secure cables at floor level.
Outdoor cables — anything running from a generator to the house, or across a courtyard or yard — must be rated for outdoor wet-location use. Look for SOOW, SJOOW, or SJTOW designations on the jacket. Standard indoor extension cords are not water-resistant and can develop ground faults in wet conditions.
Any outdoor outlet used with a generator or extension cord must have a working GFCI (ground-fault circuit interrupter) protection. A GFCI outlet or GFCI-protected circuit interrupts power within milliseconds of detecting a ground fault, preventing shock from wet cables.

Backfeed prevention — life-safety critical:

Connecting a generator to a home's electrical system without proper isolation kills people. It kills utility workers attempting to restore power on lines they believe are dead — the generator feeds voltage back through the meter and onto the distribution system. It also kills the household members who improvised the connection.

The device responsible for backfeed deaths is the "suicide cord" — a male-to-male extension cord (plugs at both ends, no female receptacle) used to plug a generator into a wall outlet. Both ends of this cord carry live voltage, and the uncontrolled connection bypasses all protective systems. Suicide cords are not a gray area or an acceptable workaround under any circumstance.

Safe generator-to-house connection requires one of the following:

UL 1008-listed transfer switch — a mechanical device that physically isolates your home's wiring from the utility before connecting generator power. Available in manual and automatic versions. Manual interlock kits (a panel-specific mechanical interlock installed by an electrician) are the most affordable option and are accepted by most jurisdictions. Installation requires a permit and typically an electrician.
Generator interlock kit — a panel-specific mechanical device that prevents the main utility breaker and the generator input breaker from being on simultaneously. Functionally equivalent to a transfer switch at lower cost.

See generators for the full transfer-switch sizing and installation framework per NEC 702 (optional standby systems).

No workaround exists for backfeed prevention. If a transfer switch is not installed before the event, the safe operating mode is to run the generator outside and connect directly to devices or load centers using appropriate extension cords — not through the household panel.

Solar continuity

Portable foldable solar panels provide daytime battery charging without generator noise, fuel consumption, or running hours. Under conflict conditions, they also reduce the need for generator use during vulnerable periods.

Common portable panels: Goal Zero Boulder 100 (100 W, 24 lbs / 11 kg), Jackery SolarSaga 100 (100 W, 10.3 lbs / 4.7 kg), Bluetti PV200 (200 W, 16.5 lbs / 7.5 kg), EcoFlow 220 W Panel (220 W, 13.9 lbs / 6.3 kg). Output depends on sun angle, cloud cover, and panel temperature — expect 60–70% of rated output on good-sun days with proper orientation.

Placement considerations for civilian safety:

Theft risk: Portable solar panels are valuable and portable — exactly the target profile you do not want to advertise. Deploy only when monitoring is possible and stow at night or during periods when you are not present.
Storm and wind risk: Anchor panels during wind events above 25 mph (40 km/h). A 200 W foldable panel is a projectile if not secured.
Glare and neighbor relations: Reflective solar panels can create glare for neighboring properties. Orienting panels at a shallow angle relative to horizontal reduces direct glare toward neighbors. Matte anti-reflective films are commercially available and reduce glare without meaningful effect on output.

Field note

A foldable solar panel deployed each morning and stowed each evening adds 10–30 minutes to your daily routine. Budget the time. A 200 W panel on a good-sun day tops up a depleted 1 kWh battery bank in 6–8 hours without running the generator at all. Over a two-week period, that is the difference between using 10 gallons (38 L) of fuel and using 2 gallons (7.6 L).

Permanent rooftop solar during conflict should remain operational if installed and functional — it produces silently, requires no fuel, and is the lowest-profile charging option available. If the system has a grid-interactive inverter with automatic anti-islanding (which disconnects the system when the grid fails), a backup battery and a gateway or automatic transfer device are needed to maintain power during a grid outage. See solar basics and home battery systems for the grid-tie + battery configuration.

Failure modes

These are the most likely points of failure — categorized by whether the failure is operator-side (a decision or action) or outcome-side (a consequence of conditions) — along with recovery actions.

Operator failure — generator moved inside or under cover. The impulse to protect the generator from rain, reduce noise, or keep it out of sight drives the most common energy-related death in disaster settings. Recognition: CO alarm activation within 1–2 hours of starting the generator; occupants developing headache, nausea, dizziness without other explanation. Recovery: evacuate immediately, call 911, do not re-enter without clearance. Prevention: install CO alarms before you need them; establish a written rule that the generator never enters any enclosed space under any circumstance.

Operator failure — backfeed connection via improvised cord. Recognition: a "suicide cord" (male-to-male) is in use; unusual electrical smells or sparks; utility workers in the area. Recovery: disconnect immediately. If you survived the improvisation, install a proper transfer switch before the next use. Prevention: there is no safe improvised version of this; the transfer switch must be pre-installed.

Outcome failure — light leakage during blackout order. Recognition: visible window glow visible from outside; a neighbor or civil defense authority alerts you. Recovery: reinspect all window seals from outside; apply dark tape or additional fabric to gaps; switch to lower-lumen lighting. Prevention: test from outside before the first blackout period begins; treat gaps found then as pre-event maintenance.

Operator failure — fuel not rotated; generator fails to start. Recognition: generator cranks but does not start; fuel is dark-colored, smells sour, or shows visible separation in the container. Recovery: drain and dispose of degraded fuel per local hazardous-waste guidelines; refill with fresh treated fuel. Prevention: rotate fuel within the treatment window (6–12 months for stabilized gasoline); label containers with fill date.

Outcome failure — LiFePO4 battery charged below freezing. LiFePO4 chemistry is damaged by charging at temperatures below 32°F (0°C) — lithium plating causes permanent capacity loss per battery management system protection protocols. Recognition: battery management system (BMS) refusing to accept charge in cold weather; capacity significantly reduced after cold-weather charging. Recovery: capacity loss is irreversible; replacement is the long-term fix. Prevention: insulate the battery enclosure; if the battery is cold, warm it above 35°F (2°C) before charging by bringing it into a heated space or using a low-power charge trickle through the BMS protection circuit.

Operator failure — fuel stored in violation of NFPA 30 limits. Recognition: fuel stored in basement, interior room, or attached garage in quantities exceeding 10 gallons (38 L). Recovery: relocate fuel to an approved exterior or detached storage location. Prevention: understand the legal storage limits (25 gallons / 95 L residential maximum, 10 gallons / 38 L in attached garage maximum, no basement storage) before pre-staging fuel.

Stop conditions

These conditions require immediate action — stopping generator operation, evacuating, or deferring to civil-defense authority.

CO alarm activation — evacuate immediately; do not re-enter without professional clearance
Smell of exhaust gas indoors or near sleeping areas — evacuate; identify and resolve source before returning
Civil defense order conflict — any civil defense order that conflicts with your current energy plan supersedes this page; comply immediately and reconfigure afterward
Cable insulation damage in wet conditions — unplug before handling; replace before reuse
Battery swelling, smoke, off-gassing, or unusual heat — evacuate the area; LiFePO4 thermal runaway is uncommon but possible in damaged or abused units; do not attempt to move a visibly failing battery
Generator in any enclosed space — shut off immediately, open all ventilation, evacuate; do not re-enter for 30 minutes minimum or until CO alarm clears

Conflict-period energy checklist

Use this before escalation reaches your area:

Power continuity under armed conflict integrates with multiple Foundations. The energy decisions on this page only work in the context of the broader civilian-protection framework.

The active conflict — civilian survival page is the required companion to this one — it covers evacuation decision-making, sheltering under fire, checkpoints, family documentation, and aid access. The energy strategies here are most relevant to the sheltering phase covered there.

For the underlying energy systems this page relies on, see generators for CO safety, fuel comparison, and transfer switch selection; batteries for chemistry comparison, sizing, and LiFePO4 cold-charge limits; portable power stations for the class of devices best suited to conflict-period civilian use; home battery systems for whole-home battery configuration; and solar basics and balcony solar for the solar charging options available at various housing types.

For the blackout baseline that applies during any grid-down event, see blackout response: first 72 hours — the conflict-period strategies above extend and layer on top of that baseline, they do not replace it.

For medical device continuity and medication cold-chain management, see cold chain management and chronic conditions under stress.

Sources and next steps

Last reviewed: 2026-05-23

Source hierarchy:

ICRC Customary International Humanitarian Law — Rule 22, Precautions against the Effects of Attacks (Tier 1, ICRC — IHL civilian-protection basis)
CDC Carbon Monoxide Poisoning Basics — Portable Generators (Tier 1, CDC — CO safety, 20 ft distance requirement)
CPSC Generator Carbon Monoxide Safety Guidance (Tier 1, CPSC — CO deaths from generators, outdoor placement)
NFPA 30 Flammable and Combustible Liquids Code (Tier 1, NFPA — residential fuel storage limits)
UL 2034 — Single and Multiple Station Carbon Monoxide Alarms (Tier 1, UL Standards — CO alarm performance and service-life requirements)
UL 1008 Ed. 9-2022 — Transfer Switch Equipment (Tier 1, UL Standards — transfer switch safety, backfeed prevention)
Honda EU2200i Super Quiet Inverter Generator Technical Specifications (Tier 1, Honda manufacturer specification — 48 dBA at 25% load, 57 dBA at full load)
NEC Article 702 — Optional Standby Systems (Tier 1, NFPA 70/NEC — transfer switch and generator connection requirements)

Legal/regional caveats: Residential fuel storage limits are set by NFPA 30 but are enforced by local fire codes, which may be more restrictive — check with your local fire marshal before pre-staging fuel in the maximum NFPA 30 quantities. Transfer switch installation requires electrical permits and inspection in most US jurisdictions regardless of whether the dwelling is owner-occupied; bypass of permitting does not exempt the installation from code compliance. Blackout-order requirements are issued by civil defense authorities and vary by jurisdiction and conflict context; this page provides general framework guidance, not legal advice specific to any jurisdiction.

Safety stakes: high-criticality topic — recommended to verify thresholds before acting.

Next 3 links:

→ Active conflict — civilian survival — the required companion: evacuation decisions, sheltering under fire, family documentation, and aid access
→ Generators — CO safety procedure, transfer-switch sizing, and fuel comparison table
→ Cold chain management — medication temperature management when refrigeration power is interrupted (cross-Foundation)