0x6e616cc5…2d47sent to0x5d2c31ce…4039·#24,398,584·view on Etherscan
1. Grid-first operation: The laundromat primarily runs on public power. The inverter is a backup and support system, not the main energy source.
2. Purpose of the inverter: It exists to complete ongoing wash cycles during outages, protect equipment, and avoid service disruption not to power full operations continuously.
3. Sustainability over size: Installing a very large inverter and solar system upfront would create costs that current and near-term revenue cannot maintain, increasing long-term risk.
4. Break-even focused: The system is intentionally sized to reach early break-even, ensuring the business can sustain operations, maintenance, and replacements.
5. Phased growth: Power capacity will be upgraded only when revenue justifies it, using real operational data rather than theoretical maximum load assumptions.
6. Responsible capital use: Buying infrastructure that cannot be maintained over the next 5 years contradicts sound business practice.
7. Start small, scale smart: The project prioritizes consistency, resilience, and long-term viability over maximum upfront specifications.
+1
> 5–7.5kVA inverter is roughly 4–6 kW usable continuous power
>
> One listing for this class of Hisense 10.5/6kg washer-dryer shows ~305 kWh per 100 cycles for wash+dry versus ~52 kWh per 100 cycles for wash-only.
>
> Even if you never use heated drying, 6 machines running together + motor surges + pumps + control electronics can already push a 5–7.5kVA setup into brownout/overload territory.
>
> A 5kVA system is undersized, and 7.5kVA leaves no margin.
>
> Notes: (looks like you need ~5x setup)
>
> - Required inverter (continuous): ~18–20 kW
> That’s roughly 22–25 kVA (depending on power factor).
>
> - Realistic battery range with dryers in use: ~30–60 kWh
>
> - With dryers in real use: ~11–22 kW of panels
> If panels are 450W each:
> 11.2 kW ≈ 25 panels
> 16.8 kW ≈ 38 panels
> 22.4 kW ≈ 50 panels
>
> Conclusion
>
> If dryers are used as advertised, you’re looking at roughly:
> ~22–25 kVA inverter, ~30–60 kWh battery, ~11–22 kW solar PV (depending on cycles/day).
>
> The proposal specifies:
> 5–7.5 kVA inverter, 10–15 kWh battery, 10 panels, with no load control plan.
>
> Feels like a technical mismatch. Also interested to see how to solar pump is doing, any video footage etc?