A cabin builder in the Sierra foothills sizes his solar system the honest way: he lists every load on the property, Starlink included, and rounds up for margin. The number he uses for the dish comes off a forum thread — “50 watts, basically nothing” — so he pencils in a spare 100W of panel and moves on to the well pump. Eight months later, on the first hard freeze of the year, the dish’s own heater kicks on to melt an overnight snow load, pulls close to 150W for six straight hours with zero sun to replace it, and by 4 a.m. the battery that’s also supposed to run his router and security cameras is sitting at 22%. The panel he bought wasn’t wrong for “Starlink” in general — it was wrong for the one mode Starlink runs in exactly when an off-grid site needs it most.
That mismatch is the rule, not the exception, and it starts with a genuine piece of marketing confusion. “Standard,” “Mini” and “Roam” get shopped like three competing dishes, but only two of those are hardware — Roam is a data plan, not a dish. You can put a Roam plan on a Mini or on a Standard kit; the plan governs where and how much you can use it, not how many watts it pulls off your battery. Untangle that first, because the power-sizing decision that actually matters is Mini vs Standard, and the watt figures most buying guides quote for each one are the marketing average, not the number a 24/7 battery bank needs to survive on.
Roam Is a Plan, Not a Dish
Starlink’s shop lists hardware and plans on the same page, which is where the confusion starts. The hardware is really just two families: the Mini — a small, flat, self-contained dish with the router built in — and the Standard line, a larger dish on a manual kickstand mount, paired with a separate WiFi router box (sold plain, or in a higher-aperture “Flat High Performance” version aimed at boats and commercial sites). Roam, Residential, Residential Lite and Mobile Priority are service plans layered on top of either dish — the thing that decides how far you can travel with it, whether it works in motion, and your monthly data allowance. Roam ships in tiers (a base data allowance, a larger one, and an unlimited tier), and every tier can run on either dish.
That decoupling matters for a power budget because it means the plan you pick has zero effect on your watt draw. A Standard dish on a Roam Unlimited plan pulls exactly the same power as a Standard dish on a fixed Residential plan. The hardware is the load; the plan is just a billing and mobility decision layered on top of it. Everything from here on is about the hardware.
The Real Watts, by Tier
Every spec sheet and forum post disagrees slightly on Starlink’s power draw, and there’s a real reason for that: firmware updates have measurably trimmed it over time, and figures get taken at different points — some at the wall on AC, some on DC straight at the dish, some mid-download, some idling with a clear sky. For sizing purposes, the fix isn’t chasing the “true” number; it’s designing to the top of the realistic range so a bad-firmware day or a marginal signal doesn’t leave you dark.
| State | Starlink Mini | Standard (+ router) |
|---|---|---|
| Idle / searching for signal | ~15–20W | ~20–30W |
| Steady-state, clear sky | ~20–40W | ~60–90W |
| Startup / acquisition peak | ~60W momentary | ~110–120W momentary |
| De-ice heater active | ~60–75W during snow melt | up to ~150W sustained |
| Design number (this guide) | ~40W average | ~100W average |
Field reports on a Mini running in mild weather with a clear view of the sky do land closer to 20W — that number is real, and it’s what you’ll actually see on a monitor most days. But a battery bank has to survive the days that aren’t “most days”: cold starts, a partly obstructed view forcing more search time, a firmware regression. Forty watts builds in that margin without wildly overbuilding the system. The Standard’s 100W design number folds in its separate router, which draws roughly 10–15W on its own and is easy to forget when a buying guide quotes only the dish.
Key number
A Starlink Mini left connected around the clock costs roughly 1kWh a day to run. A Standard dish costs roughly 2.4kWh a day in clear weather — and a single hard winter night with the de-ice heater running can push that day’s total up by another 20%. Size the battery for the heater night, not the clear-sky average.
From Watts to a Battery and Panel That Actually Cover It
The conversion is one formula, run twice. Daily energy need is design watts × hours powered. Panel size is that daily need divided by your site’s peak sun hours (not daylight hours — the hours of sun strong enough to count as full rated output), divided again by roughly 0.75 to account for real-world losses: wiring, temperature, angle, a little dust. Battery size is daily need × the autonomy you want in days, divided by the usable depth of discharge — call it 80% on a good LiFePO4 bank.
| Scenario | Daily need | Panel needed | Battery (2-day autonomy) |
|---|---|---|---|
| Mini, van/boat, always on, 4 peak sun hrs | ~960Wh | ~320W | ~2.4kWh |
| Standard, cabin, clear months, 4.5 peak sun hrs | ~2,400Wh | ~710W | ~6.0kWh |
| Standard, cabin, hard winter night + heater, 2 peak sun hrs | ~2,900Wh | ~1,930W | ~7.3kWh |
Look at what actually moves between the last two rows. The battery only grows about 20% — from 6.0kWh to 7.3kWh — because the heater’s extra draw is a fixed, bounded add-on. The panel very nearly triples, from roughly 710W to 1,930W, because winter does two things to it at once: it adds load and it shrinks the hours available to replace that load. That asymmetry is the real lesson of running a dish through winter off-grid — the heater punishes your array far harder than it punishes your battery, which is exactly backwards from what most people budget for.
Your own peak sun hours, autonomy target and load mix will differ — run the real numbers through the off-grid solar sizing calculator. If a self-contained 2–7kWh number sounds like a portable power station rather than a full DIY bank, that’s the right instinct for a van, boat or small cabin — see the power station sizing guide or the power station calculator for a matched model.
Skip the Inverter — Feed It DC
Both dishes run natively on low-voltage DC internally; the boxy power brick in the kit exists only to convert your wall’s AC into that DC. Off-grid, most of that AC actually starts as DC in a battery, gets inverted to AC by your system, then gets converted straight back to DC by the Starlink brick — two conversions, two sets of losses, to move power a dish could have taken directly.
The Mini ships with an official DC input cable built for exactly this: 12–48V straight off a battery, no inverter, no brick. Run a Standard dish the same way and you need a DC-DC PoE injector rated for its cable — a real, widely sold accessory in the RV and marine market, not a DIY hack. Either way, cutting the inverter stage out of a load that runs 24 hours a day is worth more than it sounds: at 100W around the clock, saving even the roughly 10% a decent inverter loses recovers about 240Wh a day — close to a quarter of a Mini’s entire daily budget, given up for free every day you leave the AC brick plugged in.
Winter Doubles the Bill, and the Fix Costs Nothing
The de-ice heater is the single biggest lever in this whole guide, and it’s the one almost no buying guide mentions. It exists so the dish can clear snow off its own face and keep seeing satellites; Starlink’s own software decides when to trigger it based on temperature and accumulation, and once it’s running it can hold near its peak draw for hours — usually overnight, exactly when there’s no sun to offset it and the battery is on its own.
The move worth knowing: a soft broom or a plastic scraper (never anything metal or abrasive — it’s a delicate radome, not a windshield) clears the dish by hand in under a minute and the heater simply never engages. On a site that gets regular snow, that single habit is worth more to the battery than any amount of extra panel, because it eliminates the load at the source instead of just paying to cover it.
Which Tier Actually Fits Your Site
- Van, boat, or anywhere you relocate often. The Mini’s lower draw, native DC input and no moving parts make it the easier off-grid load to carry — pair it with whichever plan tier matches how much data you actually use.
- Fixed cabin, mild climate, clear sky view. A Standard dish gives you a bigger aperture and steadier speeds in marginal weather for a modest jump in daily watt-hours — pair it with the cheaper Residential Lite plan if you don’t need full-priority data, since the plan doesn’t change what the dish draws.
- Fixed site in real snow country. Budget the winter design number in this guide, not the clear-weather one, and build the manual snow-clearing habit in from day one — it’s the cheapest capacity upgrade available.
- Boat or exposed marine mount. Look at the higher-aperture Flat High Performance hardware for wind and motion tolerance rather than choosing by plan name — Roam works on any of them, so let the mount and the sea state pick the dish.
- Already run a whole-home off-grid system. A dish this size barely registers against a well pump or a heat pump — fold it into the household load list rather than treating it as a special case.
Buying straight from Starlink locks in whatever plan you land on first, and its own referral program pays out in service credit toward your own account, not cash back to whoever sent you there — which is exactly why the real value on a Starlink-for-off-grid setup sits with independent resellers and accessory makers, not the manufacturer. Here’s the kit and the gear worth actually looking at, chosen for the off-grid case above rather than the default cart Starlink shows everyone:
Is Starlink Roam a different dish than Standard or Mini?
No — Roam is a data plan, not a piece of hardware. It can run on either a Mini or a Standard dish; the plan changes your data allowance and where you’re allowed to use it, not the watts the dish pulls off your battery.
How much solar do I need to run Starlink off-grid?
As a starting point: a Mini run around the clock needs roughly 320W of panel and a 2.4kWh battery with two days of autonomy in a sunny location. A Standard dish needs roughly 700–750W of panel and a 6kWh battery in clear weather — more if the site sees real winter. Run your actual peak sun hours and load mix through the solar sizing calculator for an exact number.
Does the de-ice heater really use that much power?
Yes — it can hold close to its peak draw, up to around 150W, for hours at a stretch, almost always overnight when solar can’t offset it. Manually brushing snow off the dish with a soft broom before it accumulates enough to trigger the heater is the single cheapest way to avoid that draw entirely.
Can I run a Starlink dish directly off a 12V battery without an inverter?
Yes for the Mini — it ships with an official DC input cable for exactly this. A Standard dish needs a dedicated DC-DC PoE injector accessory to skip its AC brick; either route avoids the roughly 10% an inverter loses on a load that’s often running 24 hours a day.