How to Become a Supplier to ESB Networks and EirGrid

To become a supplier to ESB Networks, start with two steps. First, register your interest on eTenders, the Irish Government's procurement portal, so you get an alert when ESB publishes a contract notice. Second, ask ESB's procurement team whether your product area needs registration on Supply-Line. Supply-Line is the vendor qualification system that Achilles Procurement Services runs for ESB.

ESB says its default is open competition, usually a competitive tender. It also lists ESB Networks among the ESB companies that use Supply-Line (ESB supplier information).

Registration gets you into the room, but it does not win the work. Awards come out of a small group of people. The engineer or program manager owns a package of work. The procurement team runs the competition. For much of the subcontracted work, the main contractor's commercial team picks the suppliers. The money behind all of it is set by the regulator in five-year price reviews, and the current one, PR6, runs to the end of 2030.

When a supplier tells me they want ESB Networks as a client, my first question is who signed their last few network jobs, and what those buyers looked like. That is the same order I use for sizing any market before choosing it: buyer first, portal second.

What does ESB Networks actually buy from suppliers?

This page covers two buyers only. ESB Networks is the Distribution System Operator (DSO). EirGrid is the Transmission System Operator (TSO) (EirGrid). Irish public works in general are a different market, with different buyers and different habits.

One trap first. EirGrid's page called "Suppliers" is written for companies that sell electricity to homes and businesses. Those companies need a supply license from the regulator, the CRU. If you sell ducting, switchgear, engineering hours or software, that page is not your way in.

What both companies buy follows the split in the EU utilities directive: works, supplies and services (Directive 2014/25/EU). For a supplier, that becomes four practical groups:

1. Civil works: trenching, ducting, foundations, access and reinstatement
2. Electrical works: installation, jointing, commissioning and maintenance crews
3. Equipment and materials: anything that ends up physically on the network
4. Services: engineering, design, IT systems, consulting and specialist support

The rules matter because this is the utilities regime, written for network operators, not the ordinary public works rulebook. In the electricity sector, the directive covers running fixed networks that serve the public. That describes both companies.

Here is the buyer map I would draw before touching any portal:

Most suppliers only know the first two rows. The money moves through the last three.

How big is the PR6 opportunity from 2026 to 2030?

The CRU sets what EirGrid and ESB Networks can spend in five-year cycles called price reviews (the department, 16 December 2025). PR6 is the sixth. Its final determination sets allowed revenues for both companies from January 1, 2026 through December 31, 2030 (CRU PR6 final determination).

Two numbers carry the whole market:

• EUR 13.8 billion is the initial baseline investment allowance across Ireland's electricity networks.
• An estimated EUR 18.9 billion is how high investment can rise under the CRU's Agile Investment and Monitoring Framework.

In plain English, EUR 13.8 billion is approved from day one. The framework lets the total grow by roughly another EUR 5.1 billion over the period as needs are shown.

The CRU says the package supports renewable generation, offshore wind, and electrification of heat and transport. The department expects PR6 to help connect up to 300,000 new homes and up to 1 million electric vehicles by 2030. New connections at that scale mean physical work: cable in the ground, kit on poles and in substations, and people to design and install it.

If you want to know which pot your work sits in, the CRU published its PR6 consultation as separate papers, including distribution, transmission and offshore (CRU PR6 consultation). Read the one that matches your category. It tells you which company and which kind of program you are really selling into.

For timing, five years of approved spending means a steady run of competitions and contractor packages, not one buying window. It also means nobody here rushes. If you go in, commit for at least a year with one offer aimed at one kind of network buyer.

How do ESB Networks tenders and Supply-Line work?

ESB sets out the mechanics on its supplier information page. In my own words:

eTenders is the noticeboard. ESB uses eTenders to publish contract notices and requests for tenders, and it encourages potential suppliers to register their interest there so they are alerted. Set this up first. It costs you nothing.

The EU thresholds decide the route. ESB lists these values for January 2026 to December 2027:

Above the threshold, expect a call for competition. ESB says it typically advertises these on eTenders and in the EU's Official Journal, so watch eTenders closely.

Supply-Line feeds the big tender lists. For major procurement above the EU thresholds, ESB draws on Supply-Line, the vendor registration system Achilles runs for it. Ask ESB procurement in writing, early, whether your exact category needs it.

Below the threshold, competition still applies. ESB's standard procedure for smaller contracts is competitive tendering, unless its own procurement procedures cover the case differently. Small does not mean informal.

Read three documents before you bid on anything: the ESB Supplier Charter, the Requirements for Third Parties policy and the Conditions of Contract, all listed on the supplier information page.

Two points from the directive are useful in practice. It applies to contracting entities in the utilities sectors for contracts at or above its Article 15 thresholds. It also defines an "economic operator" broadly enough to include a group of persons or entities, so a joint bid with a partner is a legal shape. This is not legal advice.

When a notice covers a framework or a multi-year arrangement, read the duration first. Plan as if that competition is your only door for the whole period it covers.

The onboarding path, start to finish:

1. Match your category to the PR6 paper it belongs to: distribution, transmission or offshore
2. Register interest on eTenders and set alerts for your categories
3. Ask ESB procurement, in writing, whether your product area needs Supply-Line registration
4. Read the Supplier Charter, the third-party requirements policy and the Conditions of Contract
5. Check which side of the threshold your typical contract falls on
6. Build your proof pack, covered further down
7. Open conversations with package owners and with the main contractors' commercial teams

Who decides on contractor awards at ESB Networks and EirGrid?

Formally, the competition decides. ESB's standard practice is competitive tendering or another form of open competition. The people who matter are the ones who shape what gets published and who decide which subcontractors fill the package once it is won.

The chain usually looks like this:

1. Need. A program inside the PR6 plan creates a package of work.
2. Package owner. A program manager, package manager or project engineer defines the scope and the specification.
3. Procurement. A procurement or category manager runs the competition and, above the thresholds, draws the tender list from Supply-Line.
4. Award. The contract goes to the offer that wins on the published criteria.
5. Contractor commercial team. For much of the physical work, the winning main contractor's commercial and contracts managers then choose subcontractors and sub-suppliers.

In this market the titles to look for are program manager, package manager, procurement manager, category manager and project engineer on the network side, plus commercial manager and contracts manager at the main contractors.

None of this is about bending an award. You cannot talk your way past an open competition, and you should not try. The goal is narrower. You want the package owner to know your product meets the spec, procurement to know you are registered in the right category, and the contractor's commercial team to know you exist before they price the job.

What should Irish, UK, and other suppliers do first?

I start every new market from the supplier's current and past customers, then look for buyers who resemble them. For a network supplier that means one plain question: who already buys this from you? It might be a UK network operator, a main contractor that works across both islands, or a utility in your own country. Their titles and their contractors are your first target list in Ireland.

Irish suppliers hold the strongest card, which is local references. Name the Irish counties you already work in. Name the contractors you already supply.

UK suppliers need to check whether their proof travels. The questions are simple. Will an Irish package owner recognize the type of client you worked for? Can your crews or your service team be on an Irish site when needed? Does your insurance, tax and delivery setup hold up across the border? If any answer is no, fix it before the first conversation, or partner with someone who already has it. For the British side of the same grid, see how suppliers get into UK grid upgrade work.

Continental European suppliers have one advantage that is easy to miss. The utilities directive is EU law, so if you have bid to a network operator in your own member state, the structure of an ESB notice will look familiar. Your gap is usually local presence and a reference the Irish market knows, rarely the paperwork.

If more than one person on your team will work this market, split it before anyone starts. With a buyer set this small, I give each person their own accounts and contractors so nobody contacts the same buyer twice. Two salespeople pitching the same ESB Networks engineer in the same month looks disorganized.

Positioning rule: shape the offer around the network buyer's categories and specifications. Do not try to bend the buyer around your general catalog.

What proof do ESB Networks and EirGrid buyers want to see?

Buyers here carry risk on live infrastructure, so they want confidence before they put a name on a list. Packaging decides whether your outreach works, more than the tactics do. Put the proof up front: the type of client you served and what you delivered. If you have nothing written up yet, start by writing up your own case studies with real numbers for your network work.

When a supplier with good work gets silence, the cause I usually find is the packaging of the offer, not a shortage of buyers. The same proof, put in the right order for the right title, reads completely differently.

Proof checklist before first contact:

• One utility or network reference, described by project type and scale
• Your safety record, stated plainly with the period it covers
• Supply-Line status, or written confirmation from ESB procurement that your category does not need it
• A one-line statement of how your product or service meets the performance spec and the standards behind it
• Confirmation that you have read and accept the Supplier Charter plus the third-party requirements policy
• Where your Irish delivery capacity sits: crew, depot, partner or service engineer

A worked example (made up for illustration). A ducting and cable-laying contractor in the north of England has several years of work for a UK network operator and wants Irish distribution work.

Its current opener says it "delivers civil engineering solutions across the UK and Europe". That tells a package manager nothing he can act on.

The repackaged version names the type of distribution work it has done and for what kind of client. It gives its own count of completed jobs and its safety record for a stated period. It adds that it has asked ESB procurement whether its category needs Supply-Line registration, and names the Irish contractor it plans to subcontract to or partner with.

Same company and same history, but now the reader can place it in a package at a glance.

How do you reach a small buyer set without spraying the market?

Two network companies and a limited number of main contractors make a tiny market. You cannot win it on account volume, because there is no volume of accounts. You win it on depth and timing.

Timing matters more than most suppliers assume. In a 2024 survey of 674 B2B buyers across Europe, the vendor at the top of the shortlist when first contact happened came out the winner in 78.5% of cases. On average, buyers made that first contact about 67.7% of the way through their buying process (6sense 2024 European B2B Buyer Experience Report). The publisher sells buyer-intent tools, so treat the exact figures with care. The direction still holds. Your positioning has to reach package owners long before a notice lands on eTenders.

When a market is this small, plan for depth instead of width: more roles at each company and more patience. So widen the list along the chain instead of across the market. Cover package owners and procurement at both network companies, then the commercial teams at every main contractor that wins network work.

The list decides more of the result than the wording of any message, so I check it before anyone writes a line. Run the same checks used for checking a lead list before anyone contacts it: real titles, the right regions, no overlap between reps.

Then reach people where engineers and commercial managers actually look. LinkedIn works well for this. A strong profile, a relevant reference in the first message and patient follow-up over months beat any burst of activity. One offer for the whole buyer set also beats a custom pitch per account, because with this few accounts everybody talks to everybody.

Which route should you take first: eTenders, Supply-Line, or direct contact?

There are three paths. Monitor only means eTenders alerts while you build proof. Register now means eTenders plus a written Supply-Line check with ESB procurement. Direct contact plus registration means you do both and open conversations with the named roles.

Three decision rules sit under the table:

1. If your typical contract would exceed the threshold for your type, the notice will be public and Supply-Line may feed the tender list. Get the Supply-Line answer in writing before anything else.
2. If most of your work is subcontracted, the main contractor is your real buyer. Register anyway, but spend your hours on its commercial and contracts managers.
3. If your offer depends on how the spec is written, talk to the package owner before the competition exists. After the notice is live, the conversation goes through formal clarification only.

Whichever row you sit in, the order holds. The PR6 paper tells you where the money is, eTenders and Supply-Line put you on the record, and the named people decide whether your name means anything when they see it.

This week, set up your eTenders alerts, write to ESB procurement about Supply-Line for your exact category, and pull up the last five network jobs you delivered. Write the title of whoever signed each one next to it. That short list is your Irish buyer map.

Eyeing ESB Networks or EirGrid and want to compare notes on your buyer map? Book a call and we can go through it.