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Solar sizing for homes, business & industry · inverter, battery & PV from 1 kW to 1 MW

Homes, villas & apartments

Homes, villas & apartments

Residential solar sizing
Keep the lights, the fridge and the evening on.

Size a hybrid solar system for your home from the appliances you actually run — so the battery covers the night, the inverter handles the start-up surge, and the panels refill it all by day.

Typical loads we size for

  • Refrigerator & freezer
  • Lighting & fans
  • Air conditioning
  • Water pump
  • TV, Wi-Fi & laptops
  • Washing machine
  • Water heater
  • Kitchen appliances

The approach

Sized from what you actually run.

01

Start from a home scenario

Pick an apartment, house or villa preset and edit it, or build your appliance list line by line — quantity, watts and running hours.

02

Backup you choose

Set how many hours the essentials must run without the grid. The battery covers whichever is larger, an ordinary night or that outage, after losses, depth of discharge and ageing.

03

Surge-aware inverter

Motors in fridges, pumps and air conditioners draw a start-up surge. The inverter is checked against it, not just the running load.

04

Panels that refill the day

The array is sized from your daily energy, the battery’s charging losses and your site’s own sun hours, then strung to suit the inverter’s voltage window and input current.

Installers fitting solar panels on a house roof

Four steps

From load list to bill of materials.

  1. 01

    Choose the site

    Home, office, commercial building or industrial plant — then start from a ready scenario or a blank list.

  2. 02

    List the loads

    Appliances with quantity, power and running hours, split between sun hours and night. Or import a spreadsheet.

  3. 03

    Set backup & supply

    Grid-tied, hybrid or off-grid, single or three-phase, generator or not — and how long the essentials must run.

  4. 04

    Get the system

    Inverter, battery and array, string layout, matched products and a bill of materials — saved and shareable.

Residential FAQ

Good questions.

How big a solar system does a typical home need?

It depends on what you run and for how long, not on the size of the house. Two homes of the same size can need very different systems. List your appliances and hours in the tool and it calculates the inverter kW, battery kWh and panel kWp for that load.

Can I run air conditioning on solar?

Yes, if it is part of the sizing. Air conditioners are heavy, long-running loads with a start-up surge, so they move the inverter and battery size more than anything else. Add them with realistic hours and the tool sizes for them.

Do I need a battery?

Only if you want power when the sun is down or the grid is off. A grid-tied system with no battery suits daytime loads; a hybrid system with a battery covers evenings and outages.

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Your system, sized
before the coffee cools.

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