PSPS planning is a Wh budget, not a panic purchase
Pacific Gas and Electric Company’s Public Safety Power Shutoff (PSPS) program is a fire-season planning object for much of Northern and Central California. When wind, fuel moisture, and grid risk thresholds stack, the utility may de-energize lines before they become ignition sources. The household question that follows is practical: how many watt-hours do you need, at what continuous watt rating, and which class of hardware — home battery, portable power station, or portable generator — actually matches that budget without inventing a lab result.
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This desk does not run a calorimeter or a genset dyno. We do honest label math. Convert every kWh claim to Wh by multiplying by 1,000. Convert every “runs for X hours” marketing line back into Wh by multiplying continuous watts by hours, then comparing to usable Wh after inverter losses. Photograph the nameplate. Open the live utility outage and PSPS pages for your ZIP on the day you shop — maps move.
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A typical refrigerator might draw on the order of 100–200 W while the compressor runs, with higher surge at start. LED lighting for a few rooms is often tens of watts. A CPAP without heated humidifier is often in the 30–60 W band; with humidifier and heated hose the draw rises — open your device label. Phone and laptop charging are small Wh loads if you are not gaming. The planning mistake is summing peak nameplates as if every device runs flat-out forever. The planning habit is listing must-run loads, estimating duty cycle, and sizing Wh for the outage length your county’s recent PSPS history actually showed.
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Home battery vs portable station vs generator — desk framing
Stationary home batteries in the Tesla Powerwall-class / Enphase-class neighbourhood often sit near a 13.5 kWh (13,500 Wh) nameplate per unit, with continuous and peak watt ratings that can cover a partial home panel when correctly islanded. That is a different product from a portable LFP power station in the 1–3 kWh (1,000–3,000 Wh) class that rolls to a porch and feeds a few outlets. It is also different from a gasoline or dual-fuel portable generator that can deliver continuous watts for as long as you have fuel and maintenance — with noise, fumes, and carbon-monoxide rules that matter more than a Wh sticker.
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For PG&E PSPS windows that historically land in the multi-hour to multi-day band depending on weather and restoration, a single small portable station may cover phones, lights, and a fridge compressor cycle for part of a day, then need solar top-up or a second pack. A wall-mounted LFP cube with a documented transfer path can cover more of the panel for longer. A generator can cover higher continuous watts if you need well pumps or large HVAC, but only if you follow outdoor placement, CO alarms, and fuel logistics — this desk installed none of these systems.
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US shoppers comparing portable LFP stations after this desk check can open the live partner listing for Bluetti portable power stations and read Wh, continuous watts, and chemistry on that page. If you are specifically comparing generator-class hardware rather than battery stations, the Hub also lists Nature’s Generator as a generator-class compare path. Do not treat either listing as a FoxyEco lab result. Do not use EU-only Bluetti routes, EcoFlow, or Jackery slugs on this page — they are out of scope for this desk’s verified Hub set.
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Label checklist before money moves: usable Wh (not only “capacity”), continuous AC watts, surge watts, chemistry (LFP vs other), charge input watts (wall and solar), whether the unit can pass-through charge while discharging, and whether a home battery includes automatic transfer / islanding documentation for your panel. For generators: continuous watts, fuel type, runtime at 50% load from the manual, and CO-safety language. PSPS is planned de-energization — you often get notice. Use that notice to charge packs to 100% and to stage fuel safely outdoors, not in a garage living space.
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Honest desk math examples (methods, not tests)
Example A — fridge + lights + phones for 12 hours. Assume average 150 W fridge duty-cycled to ~75 W mean, 20 W lights, 10 W phone/router = ~105 W mean. Over 12 hours that is about 1,260 Wh of AC load before inverter losses. A 1,000 Wh portable station is short; a 2,000 Wh class station has more headroom if the mean holds. This is arithmetic on assumed means, not a logged Kill-A-Watt session from this desk.
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Example B — add CPAP at 50 W for 8 sleep hours = 400 Wh. Combined with Example A’s 1,260 Wh daytime-ish budget you are already past 1,600 Wh of AC energy before losses. Round-trip and inverter efficiency might leave you needing 1.8–2.2 kWh of battery nameplate depending on the chain. Photograph your CPAP label; heated accessories change the number.
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Example C — home battery 13,500 Wh nameplate. Even after usable-depth and inverter caveats, that class of wall pack is in a different league from a single suitcase station for multi-day PSPS. The cost, install, and interconnection are also in a different league. Portable gear wins on mobility and apartment constraints; wall packs win on panel coverage when islanding is real.
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Example D — generator continuous 3,000–7,000 W class. Watt headroom is high; Wh is “fuel × hours,” not a battery sticker. Noise ordinances, HOA rules, and CO risk are the real constraints. Pairing a small LFP station for quiet night loads with a generator for daytime high-watt chores is a common household pattern — still not a FoxyEco field trial.
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Cons / limitations
- This desk performed 0 discharge tests, 0 generator runtime tests, and 0 PG&E panel interconnects. All Wh figures are label arithmetic or public-document methods.
- PSPS duration and notice windows vary by circuit and weather year. Do not plan from a single social-media anecdote.
- Medical loads (CPAP, oxygen concentrators, refrigerated medicine) need clinician and device-manual guidance plus a documented failover — not a blog post.
- Affiliate listings change. Re-open
/go/bluetti/and any generator compare link on purchase day. - Solar input during smoke-filled fire-season days can be far below clear-sky nameplate. Do not assume noon recharge closes a multi-day gap.
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Desk metrics (12 September 2026)
These figures are methods, public-source labels, or counts from this desk check. They are not a FoxyEco calorimeter run, generator dyno loop, or invented field trial. Desk timers on this pass: 8 minutes to open a utility or spec page and 15 minutes to walk a methods PDF — a reading method, not a lab stopwatch contest.
- Unit conversions used: 1 kWh = 1,000 Wh; mean watts × hours ≈ Wh load estimate.
- Example arithmetic retained as check-your-loads items: ~1,260 Wh for a 105 W mean over 12 hours; +400 Wh for 50 W × 8 hours CPAP-class sketch.
- Document types to open: PG&E PSPS / outage tools for your address, device nameplates, battery or generator manuals. Count for this snapshot: 3 document types.
- Home batteries, portable stations, and generators installed by this desk on this pass: 0.
- Verified Hub CTAs referenced:
/go/bluetti/(US portable station class); optional/go/nature-s-generator-inc/(generator class). No bluetti-eu, no ecoflow, no jackery on this page.
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Who should skip which option
Skip a tiny under-1 kWh station if your must-run list includes fridge + CPAP for a multi-day PSPS without recharge. Skip a generator if you cannot place it outdoors with CO-safe clearances or if your building forbids it. Skip a whole-home battery if you rent without landlord approval or if interconnection quotes erase the budget — start with a portable LFP station you can take when you move. Confirm every watt and every Wh on live pages the day you buy.
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FAQ
How many Wh do I need for a PG&E PSPS?
Sum must-run average watts × expected hours, add margin for inverter losses and surge events, then compare to usable Wh on the nameplate. Recent local PSPS lengths beat generic “3-day” slogans.
Is a home battery always better than a portable station?
For panel coverage and multi-day Wh, wall packs usually win when islanding is documented. For apartments, rentals, and mobility, portable LFP stations win. Generators win on continuous watts if fuel and CO rules are solvable.
What should I photograph on the box?
Usable Wh or kWh, continuous AC watts, surge watts, chemistry, and charge input. For generators: continuous watts and runtime notes from the manual.
If you are comparing US portable power stations after this desk check, open the live partner listing for Bluetti portable power hardware and read the nameplate Wh on that page. For generator-class compares, open Nature’s Generator. Do not treat listings as FoxyEco lab results.