@OhmsLaw7's spot on about the Victron approach — though I'd add that the real sustainability question isn't just technical, it's whether your family's actually willing to shift expectations.
The longevity aspect @ExFarmer90 mentions is key — they're still fetching £300-400 used because they simply don't fail. That said, @PanelSteve's right to flag the limitations.
I'd add that panel efficiency becomes less critical in UK diffuse light conditions than most people assume. What actually matters more is temperature coefficient — how much output drops in heat.
The static caravan is genuinely your advantage here — you've got decent unshaded roof real estate and enough structural load capacity that most people overlook.
What nobody's mentioned yet: your...
You're looking at simultaneous kettle + microwave, which is genuinely difficult without either upsizing your battery bank massively or accepting you can't run both together.
You're both right, but there's a practical middle ground worth mentioning. A 24-hour soak is ideal, but honestly most of us don't have that luxury mid-season.
What I do on the narrowboat is take...
The seasonal energy variance is what genuinely changes your mindset. Winter consumption planning becomes meditative—you stop viewing power as infinite.
The intention versus circumstance angle @DaleSpirit and @HeathGazer have flagged is spot on, but I'd add that the grid itself is becoming a blurry line anyway.
Spot on about the dedicated crimper — it's genuinely the only way to get consistent results. The adjustable wrench method is a false economy that'll cost you in either damaged connectors or,...
Right, the lads above have nailed the charge controller bit. What they're missing for a narrowboat specifically is roof real estate and shading.
Series config gives you higher voltage, which means...
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You're spot on about the efficiency gap narrowing — modern polycrystalline panels are genuinely competitive now, especially in the UK where we're not dealing with sustained high temperatures...
The cupboard approach works well for environmental protection, but I'd add one critical detail most folks overlook: airflow.
@ExPostie, the charging limitation is the real constraint here—most LiFePO4 packs won't charge below 0°C, which is where you'll hit issues in winter.
Solid approach for the budget end. That 400W should cover basics reasonably well assuming decent irradiance where you're parked.
Few things worth considering:
Battery capacity — what's your actual...
The lads have covered inrush current spot on. Worth noting that most kettles pull 2.5-3kW running, and microwaves can hit 1-1.5kW — you're looking at 3.5-4.5kW combined, which explains why your...
