Ireland’s Railways Are Powering Up: What Electrification Means for the Infrastructure Beneath the Tracks
There’s a particular stretch of the DART line, just south of Dun Laoghaire, where the track runs so close to Dublin Bay that on a rough day the spray comes right over the wall onto the platform. It’s one of the most scenic commuter journeys anywhere in Europe, and also, if you think about it for more than a few seconds, a genuinely brutal environment for anything built from steel. Salt air, constant damp, and now, as Ireland embarks on the biggest electrification programme its railway has seen in decades, live overhead line equipment running the length of it.
That combination, more electrified track, more exposure, more passengers, is exactly why the conversation about what platforms and handrails are actually made of matters more now than it has in a long time.
A Network About to Change Shape
DART+ isn’t a modest upgrade. It’s a genuinely ambitious programme, electrifying and expanding Irish Rail’s network across several corridors at once, DART+ West reaching out toward Maynooth and beyond, DART+ South West extending the electrified network further, and continued investment along the classic coastal line that Dubliners have relied on for generations. New stations, a bigger fleet, more frequent services. The investment behind it runs to somewhere between €1.2 and €2.5bn, sitting within Ireland’s wider National Development Plan, a €275.4bn commitment to national infrastructure through 2035, with €102.4bn of that earmarked for the next five years alone.
For anyone who’s stood on a packed platform at Tara Street on a Monday morning, the case for this investment barely needs making. But there’s a quieter story underneath the headline numbers, and it’s one that engineers, specifiers and anyone involved in building the physical infrastructure of this expansion should be paying close attention to.
Electrification Changes the Rules
Here’s the thing about electrifying a railway line that doesn’t always make it into the press releases: it changes what’s safe to put near the track. Overhead line equipment carries serious voltage, and anything metal sitting close to it, a handrail, a section of fencing, a platform edge structure, becomes part of the electrical picture whether it was designed to be or not. Steel structures near live electrified infrastructure typically need careful earthing and bonding to manage that risk, an extra layer of engineering, inspection and ongoing maintenance that simply doesn’t exist on non-electrified track.
Multiply that consideration across dozens of stations, hundreds of platform metres, and a construction programme running for years, and it stops being a minor technical footnote. It becomes a genuine specification question, one worth asking properly rather than defaulting to whatever’s always been used before.
This is where glass reinforced plastic, GRP, quietly solves a problem most people don’t realise they have until someone points it out. GRP doesn’t conduct electricity. Not “conducts less than steel”, not “conducts under certain conditions”, it simply doesn’t, by nature of what the material is. A handrail or fencing panel built from it isn’t a smaller electrical risk near overhead line equipment, it’s not part of that risk picture at all. There’s no bonding calculation to run, no earthing strategy to design around, because the question the strategy would be answering doesn’t arise in the first place.
Built for Irish Weather, Not Just Irish Trains
Anyone who’s spent time on the west coast, or frankly anywhere in Ireland between October and March, knows that weather here doesn’t do things by halves. Rain that seems to come sideways. Salt-laden air rolling in off the Atlantic. Humidity that never quite lets up, even in a good summer. It’s a demanding climate for any exposed infrastructure, and it’s particularly unforgiving on steel, which corrodes steadily in exactly these conditions unless it’s protected, and then re-protected, on an ongoing maintenance cycle that never really ends.
GRP takes a different approach entirely. It has genuine, total resistance to the kind of chloride-driven corrosion that saltwater causes, which is precisely the mechanism at work on that stretch of coastal DART line near Dun Laoghaire, and at dozens of other exposed points across the network. No repainting schedule. No galvanising touch-ups after a hard winter. A design life that comfortably runs past 50 years without the material needing to be revisited. For a railway operator planning maintenance budgets decades into the future, that’s not a small consideration, it’s the difference between a recurring line item and one that quietly disappears from the spreadsheet.
There’s a practical safety dimension too, one that matters every single day rather than just during storms. Platform surfaces and stair treads need to stay genuinely slip resistant in wet conditions, and GRP anti-slip flooring holds that performance reliably through an Irish winter in a way that painted or coated alternatives, worn down by weather and foot traffic, often struggle to match after a few years in service.
Not Just the DART
While DART+ is the headline act, it’s worth remembering it’s part of a much bigger story. Cork’s commuter rail network is also expanding. Investment continues across regional lines. And running alongside all of this rail expansion, Ireland’s electricity grid itself is undergoing its own transformation, with ESB Networks and EirGrid overseeing a combined €3.5bn of investment to expand and strengthen national grid infrastructure. Rail electrification and grid expansion aren’t happening in isolation from each other, they’re two threads of the same national infrastructure moment, and the material questions that apply to one apply just as directly to the other. Fencing, access structures and platform infrastructure near any point where electrified rail meets grid-connected power sits at exactly the intersection where GRP’s non-conductive properties earn their place in the specification, not as an afterthought, but as a genuinely load-bearing part of the safety case.
What This Actually Looks Like on the Ground
Picture a newly electrified section of the coastal corridor, somewhere between Dun Laoghaire and Bray perhaps, where a new platform is going in alongside upgraded overhead line equipment. The handrail running the length of that platform needs to do two jobs at once: keep passengers safe from a fall, and introduce zero additional electrical risk from the infrastructure running just metres away. GRP handrails do both without requiring a single earthing calculation.
Or picture a station undergoing a full DART+ upgrade, new stairs, new platform surfacing, all of it needing to perform reliably through an Irish winter without a maintenance crew being called out every few months. GRP stair treads and anti-slip flooring are specifically built for that brief.
Or think about the anti-trespass fencing that inevitably runs alongside newly electrified track, protecting the public from a hazard that’s considerably more serious once the line goes live. Here again, GRP’s non-conductive nature removes an entire category of risk from a fencing specification that would otherwise need careful, ongoing engineering attention.
None of this is speculative or theoretical. It’s the same underlying case that’s already proven itself on electrified rail infrastructure elsewhere, applied to a network that’s about to expand in exactly the direction where it matters most.
A Good Moment to Ask the Question
Ireland doesn’t get to electrify and expand its rail network like this very often. DART+ represents a genuinely once-in-a-generation opportunity to get the underlying infrastructure right from the outset, rather than retrofitting solutions onto decisions made under different constraints decades ago. As stations are rebuilt, platforms extended, and new sections of track brought under wire, the material specification decisions being made right now will be in service for the next fifty years or more.
It’s worth asking, at every stage of that programme, whether the platform, the handrail, the fencing in front of you is simply what’s always been specified, or whether it’s actually the right answer for a railway that’s becoming more electrified, more exposed to Irish weather, and busier than it’s ever been.
Speak to the team at Engineered Composites to find out how GRP can meet your rail infrastructure requirements as Ireland’s electrified network expands.