Planned roll out

SIRO is planned for Leixlip

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Why Choose SIRO 100% Fibre Broadband?

  • SIRO fibre broadband with Speeds of 1 Gigabit per second

    Gigabit Speed

    Gold standard 100% fibre broadband, built on the ESB network directly into your home.

  • SIRO 100% Fibre Broadband


    No copper at any point in the network. Fibre is immune to interference.

  • SIRO ESB Broadband

    ESB Network

    Providing reliable infrastructure for your connection.

  • SIRO 100% fibre broadband supports multiple devices

    Multiple Devices

    Capacity to support remote working and entertainment demands on multiple devices.

  • Future Proof

    Last connection you’ll ever need. Capacity to support 10 Gbps and beyond.

  • No buffering. No lagging.

    No buffering. No lagging.

    Video chat can be a blessing or a curse depending on how good your broadband connection is!
  • SIRO Installation

    SIRO Installation

    See just how easy it is to bring SIRO 100% broadband directly into your home.

Common questions about SIRO

What is SIRO?

SIRO is a joint venture company between the ESB and Vodafone. We are building a 100% fibre optic broadband network using the ESB’s infrastructure.  SIRO’s key differentiator is that it is a custom-built 100% fibre-optics network delivering speeds of 1 Gigabit per second, with no copper connection at any point in the network, making it faster and more reliable than any other traditional broadband infrastructure in Ireland. 

Why did ESB & Vodafone get involved?

SIRO was launched in 2015 with our shareholders ESB and Vodafone committing €450m to connect the first 50 towns.  The two shareholders have complementary skill sets. ESB was a pioneer in electrifying Ireland and have unparalleled knowledge of large-scale engineering projects. Vodafone is Ireland’s leading mobile telecoms operator, with over a million customers and world-leading expertise in the transmission of data. These two companies enable SIRO to build a regional 100% fibre-to-the-building network, the first of its kind in Ireland.  

Why choose SIRO?


SIRO’s 100% fibre-to-the-premise network is delivered using ESB existing infrastructure, with no copper connection at any point in the networkFibre-optic cables are not affected by environmental factors than can weaken signals over copper cables. For example, the signal on a copper wire drops massively over just two kilometres, whereas fibre-optic cable over the same distance is extremely reliable. Unlike copper, fibre is highly resistant to heat, humidity and extreme weather conditions.  



SIRO’s 100% fibre broadband offers speeds of 1 Gigabit per second, while a copper-based network generally delivers speeds of up to 100 Megabits per second. 25GB HD movie would take 3 minutes to download on a FTTH 1Gbps connection, but more than 30 minutes on a FTTC 100Mbps connection (source: FTTH Council Europe) 


Multiple Devices 

Our homes and offices are full of devices – multiple laptops, tablets, consoles and mobiles are usually connected to the internet at once. With SIRO 100% fibre broadband, you can connect as many devices to your broadband as you like and not slow down your connection. 


Future Proof 

Unlike copper network, fibre-optic cables are extremely resilient to heat, humidity and extreme weather conditions, making this the last broadband connection you’ll ever need. Our Gigabit network is capable of supporting much faster speeds in the future, enabling homes and businesses to cater to evolving technologies and meet future data needs.  


Why is SIRO different?

SIRO’s key innovation is that it is a 100% fibre-optic internet connection all the way to the building (fibre-to-the-building), making it a vast improvement on any other broadband infrastructure currently available in Ireland, with no copper connection at any point in the network. SIRO is Fibre-to-the-building which means you’ll have incredible speed and reliability instantly.

Who are Entegro and 4site?

Entegro and 4site are our design and build contractors for multi-dwelling units.

Will everybody get speeds of 1Gb?

SIRO offers speeds of 1 Gigabit (1000Mbp) per second to broadband operators, but they may choose to offer a range of different products & speeds to end consumers at different price points. Various factors which SIRO has no control over may impact the speed of the wifi in your premise. For example, the age of devices and router used and their ability to deal with 1GB speeds may result in a slower experience.

How do I check if SIRO is available in my home/business?

To check availability in your home or business, please visit our address checker

How is SIRO installed?

When you purchase SIRO from a broadband provider, an engineer will visit your home at a time agreed by you. SIRO will be brought into your home either overhead or underground and into the ESB meter box. An external connector box which houses the SIRO fibre will be positioned close to the ESB meter box.

The engineer will agree with you where to install our internal connector box. Some minor drilling is involved and some cabling depending on where you would like your modem. The engineer will ensure and prove that your home is receiving the fibre speed based on the package purchased.

For SME and Enterprise customers, an engineer will work with the business to determine the entry point. Where applicable the existing communications space will be utilised.

How much does SIRO cost?

As an open access wholesaler, SIRO develops the network and then makes it available for local broadband providers to bring to the public. Our retail providers offer a range of different products and speeds to end consumers at different price points.

Do you require a phone line?

No, you do not require a phone line to avail of SIRO broadband.

What is the timeframe for delivery?

Due to commercial sensitives, we will announce specific timelines for individual towns closer to the date.

I’m experiencing service issues, who do I contact?

SIRO is a wholesale operator and we are responsible for building the SIRO network. If you are experiencing any service issues, we must advise you to contact your chosen retail provider.

What were the criteria for town selection?

SIRO is a commercial venture and will be delivered to 50 towns in phase one, which are topographically and geographically accessible and which are not served by high-speed broadband.