Dwr cymru welsh water
Customer named in the DNOs' registers
In NGED's August 2026 and SPEN's September 2026 editions
The registers spell this customer’s name more than one way: “Dwr cymru welsh water” (7 sites) and “Dwr Cymru Welsh Water” (1 site).
Capacity by DNO
Capacity by technology
| Technology | Sites | Capacity | Connected | Accepted to connect |
|---|---|---|---|---|
| Other or not stated | 3 | 10.8 MW | 10.8 MW | – |
| Hydro and marine | 3 | 10.8 MW | 10.8 MW | – |
| Storage | 1 | 4 MW | 4 MW | – |
| Wind | 1 | 2.6 MW | 2.6 MW | – |
Each site is grouped by its first energy source, as the register names it.
Sites
Each site under this name in the DNOs' latest editions, the largest first.
Site, company and substation names are shown as they appear in the registers, including capitalisation.
| Site | DNO | Grid supply point | Technology | Status | MW |
|---|---|---|---|---|---|
| Cardiff rover way wwtw | NGED | Pyle Grid | Other or not stated | Connected | 6.68 |
| Llyn brianne reservoir, dyfed | NGED | Swansea North Grid | Hydro and marine | Connected | 5.45 |
| Elan valley nffo hydro electric generating facility | NGED | Rassau Gsp | Hydro and marine | Connected | 4 |
| Liverpool Corporation Power House | SPEN | Trawsfynydd | Storage | Connected | 4 |
| Afan waste water treatment works | NGED | Swansea North Grid | Other or not stated | Connected | 3.072 |
| Newport, nash sewage treatment works, newport | NGED | Uskmouth | Wind | Connected | 2.587 |
| Elan non-nffo facility | NGED | Rassau Gsp | Hydro and marine | Connected | 1.3 |
| Haverfordwest bolton hill water process plant | NGED | Pembroke Power Station | Other or not stated | Connected | 1.02 |
Grid supply points
Each grid supply point its sites are at, with the capacity of its own sites there.
| Grid supply point | DNO | Sites | Connected | Accepted to connect |
|---|---|---|---|---|
| Swansea North Grid | NGED | 2 | 8.5 MW | – |
| Pyle Grid | NGED | 1 | 6.7 MW | – |
| Rassau Gsp | NGED | 2 | 5.3 MW | – |
| Trawsfynydd | SPEN | 1 | 4 MW | – |
| Uskmouth | NGED | 1 | 2.6 MW | – |
| Pembroke Power Station | NGED | 1 | 1 MW | – |
What changed recently
Changes to its sites found in both of two consecutive monthly editions of their DNO's register, the latest first.
NGED: QueueWatch holds one edition of its register so far, the August 2026 edition, so there is nothing to compare yet.
SPEN, August 2026 edition to September 2026 edition, for this customer's sites: 1 site matched. Every August site and every September site had a match in the other edition.
No change to the status, capacity, technology or customer of its sites in the editions QueueWatch holds.
Price what a delay would do to your project
QueueWatch reports what changed in the DNOs' published connection registers. It doesn't tell you what to do about it. That's what QueueQuant is for.
Give QueueQuant a site and it compares every way you could power it, on the grid or off it: waiting for the firm date, taking a non-firm offer, building a private wire or going off-grid, across every combination of contracted capacity, generation and battery. That’s millions of possible plans, each tested against thousands of possible futures for delay, curtailment and price. It returns the one plan that holds up best, even when that plan is not to build.
Get the plan that holds up best for your site, and where that answer flips.
What you get from QueueQuant
- The route to power that wins
- How to size every asset on the site
- The level of delay or curtailment at which that answer flips
- Whether the project is worth building at all
- How bad the worst outcomes get, at the risk level you choose