Design Consultancy
Engineered plans for confident DIY installation
The journey to energy independence starts with a flawless design. Our Off-Grid Design Consultancy is built for DIY installers who want the satisfaction of building their own system with the certainty of a professional, calculation-perfect schematic.
- Expert-led off-grid design
- Fully calculated and compliant
- Tailored to your setup
- UK Based Business
Your offgrid solution
For just £250, we create a precise, safety-compliant blueprint tailored to your setup — helping you avoid costly mistakes and build a system you can rely on for years to come.
We turn your energy goals into a precise, professionally engineered plan using Victron’s proven design principles. Every element – from cable sizing and fusing to inverter and battery selection – is calculated for performance and safety. The result is a clear, installer-ready design pack that removes uncertainty and ensures your DIY system runs efficiently and reliably.
Who is it for
We've got experience in supporting a range of off-grid projects
01
Maximise every inch of space with a compact, efficient off-grid design built for life on the move. We’ll ensure your batteries, charging system, and inverter work seamlessly together to deliver safe, dependable power wherever the road takes you.
02
Get a marine-grade electrical design tailored to the demands of life at sea. From corrosion-resistant components to safe charging and inverter management, your system will deliver consistent power whether you’re moored or underway.
03
Design a fully self-sufficient system that meets your year-round energy needs with confidence. We’ll size your solar, batteries, and inverter to keep everything running smoothly through all seasons — no grid required.
04
Take a look at some of our projects
Bringing “Grid-Standard” Power to a Historic Tregonhawke Cliff Chalet
Discover how Offgrid Western brought 5-star power to a historic Tregonhawke Cliff Chalet using a Victron 5kVA system and high-capacity Fogstar battery storage.
Off-Grid Class Q Barn Conversion – Solar & Battery System Case Study
Off-grid Class Q barn conversion in Devon powered by solar PV, battery storage and modern heating. A real-world renewable energy case study.
Mid-Devon Farmhouse Solar, Battery & Heat Pump Case Study | Offgrid Western
A Mid-Devon farmhouse upgraded with solar PV, battery storage and a heat pump, cutting energy and transport costs by over £4,000 per year.
Take the guesswork out of your off-grid plans
Common questions
Gain confidence in your calculations
- Your total power consumption and storage needs.
- The optimal battery bank size and chemistry.
- The ideal solar array wattage and configuration.
- Correct inverter/charger and solar charge controller sizing.
- Safe and appropriate cable gauges, fusing, and circuit protection.
All you need
What you'll get
After our consultation, you will get a complete design package, including:
Professional wiring schematic
A precise, easy-to-read diagram showing how every part of your electrical system connects. It helps you or your installer see exactly how everything fits together, ensuring a safe, efficient, and tidy setup.
Complete Parts List
A comprehensive breakdown of every component needed for your system — from the Victron core equipment to the correct cables, lugs, fuses, and fixings — so you can order confidently and know you have everything required.
Full Calculation Breakdown
We include all the key load, capacity, and charging calculations used to design your setup, clearly showing how we’ve matched your specific energy use, storage needs, and charging sources for optimum performance.