Design your Electrical System in 10 minutes

Our software is designed for DIY builders who want to create a safe and reliable off-grid electrical system, whether it’s for a camper, boat, 4×4, truck, overlander or tiny home. Perfect for beginners, but accurate enough for semi-pros.

That depends on the licence. As of this moment we have a 365 licence and a lifetime licence. Both licences require a one time payment. The 365 licence does not automatically renew. 

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As often as you want. During your active subscription, you can generate unlimited systems.

No, not necessarily, but some basic knowledge is welcome of course. If you read our eBook, you’ll have a good base to start with. (complementary with the purchase of a licence)

The software is designed so that you can’t make a mistake.

Our software works best on a computer, but it’s also fully functional on a tablet.
You can use it on a phone as well, though the experience may be less optimal.

Our software guides you through a step-by-step process. You select the components you need, and it automatically handles wiring logic, fuse ratings, cable sizing, and more. The software is made so that you can’t make a mistake or select a combination that is not logical.

The software calculates wire size based on current, voltage, and wire length. We follow accepted engineering standards, and where available, we use official manufacturer guidelines to determine correct cable size.
Both metric (mm²/meters) and imperial (AWG/feet) units are supported.

For most inverter/chargers we try to use manufacturers standards. When they’re not available we maintain a maximum voltage drop of 2%. For general 12V or 24V appliances like USB outlets and lighting, we allow up to 6%.

Fuses are automatically sized based on the maximum current the wire can safely handle, including an allowed voltage drop and a built-in safety margin. Whenever possible, we also follow the specifications provided in the manufacturer’s manual.

No. Our software is designed for so-called drop-in batteries with an internal BMS, or for lead-acid based batteries. We may add support for external BMS configurations in the future, but this is not possible at the moment.

Inverters – 230V

12V

• 250VA

• 375VA

• 500VA / 500W

• 800VA

• 1000W

• 1200VA

• 1500W

• 1600VA

• 2000W / 2000VA

• 2500W

• 3000VA / 3000W

24V

• 250VA

• 375VA

• 500VA / 500W

• 800VA

• 1000W

• 1200VA

• 1500W

• 1600VA

• 2000W / 2000VA

• 2500W

• 3000VA / 3000W

Victron MultiPlus – 230V

12V

• MultiPlus 12/500/35

• MultiPlus 12/800/35

• MultiPlus 12/1200/50

• MultiPlus 12/1600/70

• MultiPlus II 12/2000/80

• MultiPlus II 12/3000/120-32

24V

• MultiPlus 24/500/10

• MultiPlus 24/800/16

• MultiPlus 24/1200/25

• MultiPlus 24/1600/40

• MultiPlus II 24/2000/50

• MultiPlus II 24/3000/70-32

• MultiPlus II 24/5000/120-50

Ective Inverters – CSI Serie

12V (230V)

• CSI 3, 5, 10, 15, 20, 25, 30

24V (230V)

• CSI 5, 10, 15, 20, 25, 30

12V – CSI PRO

• PRO 10, 15, 20, 25, 30

Ective Inverters – SSI Serie

12V (230V)

• SSI 10, 15, 20, 25, 30

24V (230V)

• SSI 10, 15, 20, 25, 30

12V – SSI PRO

• PRO 10, 15, 20, 25, 30

Inverters – 120V

12V → 120V

• 250VA

• 375VA

• 500VA / 500W

• 800VA

• 1000W

• 1200VA

• 1500W

• 2000W

• 2500W

• 3000W

24V → 120V

• 250VA

• 375VA

• 500VA / 500W

• 800VA

• 1000W

• 1200VA

• 1500W

• 2000W

• 2500W

• 3000W

Victron MultiPlus – 120V

12V

• MultiPlus Compact 12/2000/80

• MultiPlus II 12/3000/120-32

24V

• MultiPlus II 24/2000/50

• MultiPlus II 24/3000/70-32

• MultiPlus II 24/5000/120-50

Yes, you can choose between parallel and series-parallel setups. You can select up to 5 solar panels.

Yes, our software allows you to choose both your alternator voltage and your system voltage. You can select either 12V or 24V for each, depending on your setup. This gives you the flexibility to match your electrical system to your specific vehicle and components.

Yes, our software supports both 120V and 230V systems. If your mains voltage is 220V or 240V, you can simply select 230V in the software, this will work just fine. These voltages are close enough that they don’t impact how your setup functions.

Our software is compatible with a wide range of devices, including inverters, batteries, solar charge controllers, and more. For the full and up-to-date list, please visit our dedicated Compatible Devices page.

€69 for a year (365) licence and €199 for a lifetime licence. You get instant access and can build unlimited systems during your subscription. Updates are included in the licences.

You’ll receive an email with login instructions. From there, you can start building your first diagram in minutes.

Yes. Once your signup is complete, you’re ready to go. It sometimes happens that our onboarding email ends up in the spam folders, so please do check that.

You can not cancel a subscription. It’s a one time payment without automatic renewal. Naturally a lifetime licenses doesn’t need cancelation.

Because full access is granted immediately, we don’t offer refunds. But if you run into issues, just contact us — we’ll do our best to fix it.

We’re currently building a professional license for installers and businesses who want to create branded diagrams for their customers. Want early access? Let us know.

No, not yet. The current version is for personal use only. Our B2B version is in development.