Electrical & Off-grid
Off-grid systems
Battery banks, charging, and power management designed for boats that spend real time off shore power, whether that is a weekend at anchor or a year as a live-aboard.
Overview
Off-grid is a system, not a shopping list.
Most off-grid power problems on boats come from mismatched parts. A big battery bank with a small charger never recovers. A big alternator on a small bank cooks itself. Solar without a proper controller wastes most of what it generates.
We design off-grid setups around your real power use, not a generic spec. Fridge, lighting, instruments, autopilot, watermaker, induction hob, washing machine, whatever the boat does in a day, the system is sized to it.
The result is a setup that recovers daily, runs quietly, and lasts. Lithium where it earns its place. Lead acid where it is the right call. Hybrid where that suits best.
What's included
What an off-grid build includes.
- Power audit: a daily Ah budget against the real loads on your boat
- Battery bank specification: chemistry, capacity, and physical layout
- Charging sources: alternator, solar, shore, and generator integration
- MPPT controllers, B2B chargers, and inverter-chargers selected to match
- Battery monitor and shunt installed where you can actually read it
- Cable sizing to ABYC and BMEAA guidance, fused at source, properly terminated
- Switching, isolation, and emergency shut-off planned for service access
- Commissioning, parameter setup, and a clear handover on what every reading means
Process
How an off-grid build runs.
Power audit
A short conversation about how you use the boat builds the daily energy budget. This is the foundation everything else sits on.
Design and quote
A scaled system spec with itemised costs. Trade-offs explained: where to spend, where to save.
Install
Tidy, labelled, serviceable. Cable runs planned for future access. Existing kit reused where it is fit for the new system.
Commission and teach
Settings dialled in, monitor explained, and a written summary so you can run the system with confidence.
City & Guilds qualified
Properly trained marine engineering, not handyman improvisation.
Mobile to your mooring
Work happens at your boat wherever possible, saving time and hassle.
Breakdown callouts
Stuck on the water? Get in touch and a callout can be arranged.
Fully insured
Public liability cover in place for every job, on every boat.
Keep exploring
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Pure sine wave inverters and inverter-chargers installed safely so you can run domestic appliances at the mooring.
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GPS & fish finder fitting
Chartplotters, transducers, and fish finders fitted, networked, and tuned for clear data on the helm.
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Book off-grid systems for your boat.
Tell Oli about your boat and what you need. Quotes are honest, the work is done at your mooring, and the schedule is yours to choose.