- Nederland · Nederlands
Al zonnepanelen? Bekijk welke thuisbatterij bij uw situatie past.
Controleer uw zonne-overschot, meter en aansluiting. Vergelijk passende opties met duidelijke voorwaarden.
Start de controle - Deutschland · Deutsch
Schon eine PV-Anlage? Prüfen Sie einen AC-Speicher für Ihr Zuhause.
Prüfen Sie Anlage, Zähler und Anschluss. Vergleichen Sie drei Hersteller mit klaren Bedingungen.
Prüfung starten
How the solar checks work
Surplus, meter and connection come before capacity.
- 01
Declare your surplus
Roughly how much solar power you export on a good day, and when you use power yourself. “I don't know” is allowed and stays an open condition.
≈ 90 seconds
- 02
Meter and connection
Whether a compatible meter is needed (and included), and whether the output power needs a dedicated circuit by an electrician.
Shown as conditions
- 03
Conditional answer
A capacity guided by your declared surplus, never presented as optimal. No savings or payback figure is promised.
Same inputs, same answer
United States · portable power
US checks: refrigerator outage and RV weekend.
- Refrigerator during an outageUC-03Will 1,000 Wh or 2,000 Wh keep your refrigerator cold?One number from your EnergyGuide label and your outage length. You get the hours, the compressor-start gate, and whether daily recharge closes.For a 72-hour outage, 2 kWh can fail without enough daily recharge.Check my refrigerator2 min · one label figureAt riskDead outletStationTemp. vs hours off
- RV or travel-trailer weekendUC-06Is a portable station enough for two nights without hookups?Start from shore power, TT-30, the battery you already own and the loads you will actually run after sunset.Check my RV weekend2 min · no loginEvening loadsNo hookupStation + panel2 nights
Six more situations are planned — coming next
Listed for transparency, not as working tools, and deliberately not clickable.
- UC-01 · plannedHome outage (whole household)A few hours to a full night, mixed household loads.
- UC-02 · planned72-hour family readinessMulti-day plan with a realistic recharge window.
- UC-04 · plannedRouter, laptop & PCSmall continuous loads, long duration, work continuity.
- UC-05 · plannedCPAP & medical-adjacentOvernight continuity with a conservative reserve.
- UC-07 · plannedJobsiteTool inrush, duty cycles, rough handling, noise limits.
- UC-08 · plannedOutdoor & campingPortability first, solar-only recharge realities.
Guides and evidence
Read the reasoning before you trust the answer.
- Research tableXLSX · CSVRefrigerator outage sizing table15 published scenarios, the exact formula, and the gates capacity cannot answer.Open the table →
- Editorial guideBattery backup for a refrigeratorHours per kWh, the compressor gate, and when an installed system is the honest next step.Read the guide →
- Published methodRV sizing methodThe four equations behind the RV check, and the boundaries where it abstains.Read the method →
- Worked casesDecision casesFrozen inputs replayed against the live engine — including one that ends in a refusal.Open the cases →
Independent, dated, published
What you can hold us to.
Independence
No paid placement. A verdict set is ordered from your situation and the dated catalog before any commercial layer is applied; some eligible outbound links are affiliate links, and eligibility is decided before commission.
Dated data
Prices, stock and every volatile figure carry the date they were checked. Values that cannot be verified are marked unknown, never estimated silently.
Published method
Conservative rules, open to challenge, with corrections logged by date. Abstention is a valid output and is displayed as one.
Published by Alexis Marchais — engineer based in France, writing independently for NL, DE and US readers. Editorial standards · Contact the publisher