Marina Shore Power Assessment
A marina wanted to offer shore power and vessel charging, but didn’t know whether its existing electrical supply could carry the load — now or as demand grows. This study answered that with a measured demand assessment and a phased plan, so the marina could invest in stages instead of over-building on day one.
Can the Supply
Carry the Load?
Marinas adding shore power face a simple but unforgiving question: will the existing incoming supply handle the new demand, and what happens when vessel charging — which draws far more than traditional shore power — is added on top?
Getting this wrong is expensive in both directions. Under-provision and you turn customers away; over-provision and you pay for grid capacity you don’t use for years.
Isca assessed the marina’s present electrical demand, modelled the additional load from shore power and charging, and compared the total against the available supply capacity of approximately [ x kVA ].
Demand vs Capacity.
The whole assessment turns on the gap between what the site draws today, what it would draw fully electrified, and what the incoming supply can deliver. These are the figures that define that gap — to be confirmed against the demand study.
- Existing peak demand
- [ x kVA ]
- Available supply capacity
- [ x kVA ]
- Shore power added load
- [ x kW ]
- Vessel charging added load
- [ x kW ]
- Diversity factor applied
- [ x ]
- Headroom after Phase 1
- [ x kVA ]
What the Marina Received.
Electrical Demand Study
A measured and modelled picture of present and projected electrical demand across the site.
Supply Capacity Review
Assessment of the existing incoming supply against current and future load, identifying the real headroom.
Charging Load Model
Modelling of vessel charging demand under realistic diversity, not worst-case-everything-at-once.
Phased Growth Plan
A staged electrification roadmap so investment tracks actual demand rather than front-loading cost.
Infrastructure Assessment
Review of distribution, protection and metering implications of the added load.
Upgrade Trigger Points
The demand thresholds at which a supply upgrade becomes necessary — so the marina can plan ahead.
Measure to Roadmap.
Present Demand
Establish what the site actually draws today as the baseline for everything else.
Future Load
Add shore power and charging demand under realistic diversity assumptions.
Against Capacity
Test the total against the incoming supply to find the real headroom and limits.
Staged Plan
Set out an investment roadmap with clear upgrade trigger points.
The Engineering
Reasoning Behind It.
Realistic Diversity, Not Worst Case
Sizing every charger as if it runs flat out simultaneously wastes money. We model how the site is actually used, which is where the real, defensible numbers come from.
Marine Context, Not Just Electrical
A marina is not a car park. Tidal access, berth turnover and vessel mix all shape charging demand — and Isca understands the marine side as well as the power side.
Phased, So Capital Tracks Demand
The plan lets the marina invest in stages against real uptake instead of over-building on speculation. That is usually the difference between a viable scheme and a stalled one.
Decision-Ready Output
The study ends with clear trigger points, not just data. The marina knows what to do now and what to watch for next.
Adjacent Studies.
Planning Shore
Power or Charging?
Before committing to infrastructure, find out what your supply can actually carry and how to phase the investment. That is what this assessment delivers.
Get In Touch →