Solar Flatrack – Marine Solar Panel System for Inland Vessels | Wattlab
Solar Flatrack panels installed on the deck of an inland vessel at sea
Solar system

Solar Flatrack

Turn unused deck space into clean, cost-saving energy — without disrupting operations.

3–5 yr
Payback time
2–4%
Fuel reduction
25%
Annual return
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Solar Flatrack modular solar panel unit for marine vessels

Your Solar Flatrack.

Our solar system turns unused deck space into clean, cost-saving energy, without disrupting operations. Whether you’re targeting lower EU ETS exposure, better CII rating, saving fuel costs, or a faster ROI, Solar Flatrack delivers real impact, vessel by vessel and fleet by fleet.

Furthermore, the system is designed for straightforward installation on existing vessels with no structural modifications required. Once fitted, it operates silently and autonomously — harvesting solar energy while your vessel is underway or at anchor.

EU-funded innovation. The project ‘PV Systems for Seagoing Vessels’ is co-funded by the European Union through the Just Transition Fund (JTF), supporting the development and demonstration of the Solar Flatrack solution.

Results worth bringing aboard.

The Solar Flatrack converts unused deck space into a reliable source of clean energy, without affecting cargo operations. With validated performance and real-time monitoring, you get instant insight into your energy production and savings.

3–5 yr

Return on investment

Payback time varies based on sailing area, number of units, sailing time, idle time and system efficiency.

2–4%

Less total fuel consumption

Hotel load reduced by 20%, leading to an overall fuel consumption and emissions reduction of 2–4%.

16–25%

Annual rate of return

Depending on system configuration and operational conditions.

Get a tailored calculation
Solar Flatrack installed and operational on a vessel deck

Built for the demands of maritime operations.

Every aspect of Solar Flatrack is engineered to perform reliably at sea, with no disruption to your vessel’s existing operations or cargo capacity.

Fast installation

Designed for straightforward deck installation with no structural modifications required. Minimal downtime during fitting.

Scalable system

The modular design means you can start with one unit and expand as your energy requirements grow — without major retrofits.

Real-time monitoring

Validated performance data and real-time monitoring provide instant insight into energy production and cost savings.

No cargo impact

Installed on unused deck space — operations continue uninterrupted. No changes to cargo capacity or vessel routing.

Impact on regulation.

Solar Flatrack directly improves your vessel’s compliance position across the key maritime environmental regulations — reducing risk and future-proofing your fleet.

EEXI rating

Solar Flatrack reduces overall fuel consumption, which leads to a better Energy Efficiency Existing Ship Index (EEXI) score.

CII rating

By enabling ships to operate with lower emissions, the Carbon Intensity Indicator (CII) rating improves over time.

FuelEU costs

Solar power reduces reliance on fossil fuels, lowers greenhouse gas intensity and helps comply with FuelEU Maritime Regulation, reducing the risk of penalties.

EU ETS costs

Reducing fuel consumption lowers CO₂ emissions, decreasing the number of emission allowances required under the EU Emissions Trading System.

From first meeting to full operation.

A simple four-step process from introduction to installation — designed to minimise your time and maximise the result.

1

Introduction

It all starts with a personal meeting to discuss your needs, vision and ideas — and explore how we can work together.

2

GA plan & voyage details

Next, your vessel’s General Arrangement plan and operational data are reviewed to understand your ship’s profile, routes and energy requirements.

3

Custom proposal

Based on that, we develop a tailored plan outlining the best solution for your vessel, with clear benefits, cost savings and environmental impact.

4

Installation & support

Finally, we assist with installation and stay engaged with continuous support and monitoring for maximum long-term efficiency.

Let’s find the right solution for your fleet.

No obligations — we’ll calculate your fuel savings and ROI for free.

Address
Keileweg 78, 3029 BT Rotterdam

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