FishlegFISHLEG
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60-second preliminary estimate

Solar, battery,
or VPP-ready?
Let's do the math.

Fishleg shows what actually fits your home — self-consumption first, honest savings ranges, and a clear view of future flexibility. No sales pressure.

  • Transparent assumptions
  • Three honest scenarios
  • One follow-up — never spam
Start my estimate How it works

No account required · Preliminary estimate, not a formal quote · A technical review is required for a precise proposal.

FishlegSample

Indicative annual savings

€1,840–€2,490

Range, not a guarantee.

System

6.5 kW

Battery

10 kWh

Payback

6 – 8 yrs

Indicative example. Your real numbers depend on usage, roof, and tariff.

What you'll learn in 60 seconds.

Bill impact

How much of your current quarterly bill solar realistically offsets — based on when you actually use power.

Payback range

Indicative low/high payback for each setup, with the install assumptions visible up front.

VPP optionality

Whether VPP-ready makes sense as future flexibility — without us pretending it's guaranteed income.

Three setups. One honest comparison.

See methodology →

Solar only

Cut daytime bills with a system sized to your roof and usage.

Best if

Best if you're home during the day or running a pool, AC, or EV charger off-peak.

Solar + Battery

Use more of what you generate. Battery shifts daytime solar into your evening peak.

Best if

Best if you're an evening household and want a more stable bill.

+ VPP-ready

A hybrid setup ready to plug into a Virtual Power Plant — flexibility for what's next.

Best if

Best if you want future optionality. No guaranteed earnings — partner programs vary.

What this is, what it isn't

Honest by design.

Fishleg Calculator is a pre-sales tool to help you understand the logic before requesting a detailed quote. It's not engineering software, not financial advice, and not an official energy assessment.

  • We do show

    Indicative annual savings ranges, payback ranges, and self-consumption logic.

  • We don't oversell

    Export earnings — feed-in tariffs are modest and trending down.

  • We frame battery as

    A self-consumption layer, not a money-maker.

  • We frame VPP-ready as

    Future flexibility, never guaranteed profit.

Quick answers.

See all FAQs →

Ready to see your numbers?

Sixty seconds, four short steps, three honest scenarios.

Start my estimate