Connahs Quay
Grid supply point in Merseyside, Cheshire and North Wales (SPM)
SPEN Embedded Capacity Register >1MW, September 2026 edition
Capacity by technology
| Technology | Sites | Capacity | Connected | Accepted to connect |
|---|---|---|---|---|
| Wind | 6 | 143 MW | 95 MW | 48 MW |
| Solar | 6 | 103 MW | 81 MW | 22 MW |
| Other or not stated | 1 | 99.4 MW | – | 99.4 MW |
| Gas and other fossil | 13 | 85.9 MW | 77.1 MW | 8.8 MW |
| Bioenergy and waste | 6 | 27.3 MW | 27.3 MW | – |
Storage capacity in MWh: not published by SPEN.
Each site is grouped by its first energy source, as the register names it.
How busy is each primary substation?
Each primary substation at this grid supply point in the September 2026 edition, under the bulk supply point its register gives. Select a row to see its sites.
Site, company and substation names are shown as they appear in the registers, including capitalisation.
| Primary substation | Bulk supply point | Sites | Connected | Accepted to connect | |||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HOLYWELL GT1 / RHYL GT1 / ST ASAPH GT2 / ST ASAPH GT4 | 1 | 1.9 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1.9 MW: 1.9 MW connected
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| HOLYWELL GT1 / RHYL GT1 / ST ASAPH GT2 / ST ASAPH GT4 | 1 | 1.5 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1.5 MW: 1.5 MW connected
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| HOLYWELL GT1 / RHYL GT1 / ST ASAPH GT2 / ST ASAPH GT4 | 1 | 1.1 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1.1 MW: 1.1 MW connected
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| HOLYWELL GT1 / RHYL GT1 / ST ASAPH GT2 / ST ASAPH GT4 | 1 | 1.1 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1.1 MW: 1.1 MW connected
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| HOLYWELL GT1 / RHYL GT1 / ST ASAPH GT2 / ST ASAPH GT4 | 1 | 1 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1 MW: 1 MW connected
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| HOLYWELL GT1 / RHYL GT1 / ST ASAPH GT2 / ST ASAPH GT4 | 8 | 84 MW | 67 MW | ||||||||||||||||||||||||||||||||||||||||||||||
8 sites, 151 MW: 84 MW connected, 67 MW accepted to connect
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| Rhyl T2 | 1 | 60 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 60 MW: 60 MW connected
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| Shotton Paper | 1 | 50 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 50 MW: 50 MW connected
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| DEESIDE PK GRID GT1 / SIXTH AVE GRID GT1 | 2 | 5 MW | 2.9 MW | ||||||||||||||||||||||||||||||||||||||||||||||
2 sites, 7.9 MW: 5 MW connected, 2.9 MW accepted to connect
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| DEESIDE PK GRID GT1 / SIXTH AVE GRID GT1 | 3 | 33 MW | 8.8 MW | ||||||||||||||||||||||||||||||||||||||||||||||
3 sites, 41.8 MW: 33 MW connected, 8.8 MW accepted to connect
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| CASTLE CEMENT GT1 / HAWARDEN GT1 / SALTNEY GT1 / SALTNEY G2B | 1 | 5 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 5 MW: 5 MW connected
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| CASTLE CEMENT GT1 / HAWARDEN GT1 / SALTNEY GT1 / SALTNEY G2B | 1 | 2.5 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 2.5 MW: 2.5 MW connected
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| CASTLE CEMENT GT1 / HAWARDEN GT1 / SALTNEY GT1 / SALTNEY G2B | 2 | 2.1 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
2 sites, 2.1 MW: 2.1 MW connected
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| CASTLE CEMENT GT1 / HAWARDEN GT1 / SALTNEY GT1 / SALTNEY G2B | 1 | 1.5 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1.5 MW: 1.5 MW connected
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| CASTLE CEMENT GT1 / HAWARDEN GT1 / SALTNEY GT1 / SALTNEY G2B | 2 | 20.2 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
2 sites, 20.2 MW: 20.2 MW connected
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| BRYMBO GT2 / HAWARDEN GT2 / HOLYWELL GT2 | 3 | 9.5 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
3 sites, 9.5 MW: 9.5 MW connected
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| BRYMBO GT2 / HAWARDEN GT2 / HOLYWELL GT2 | 1 | 1.8 MW | – | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 1.8 MW: 1.8 MW connected
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| Not stated | 1 | – | 99.4 MW | ||||||||||||||||||||||||||||||||||||||||||||||
1 site, 99.4 MW: 99.4 MW accepted to connect
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Not found in SPEN's September 2026 edition
9 sites last found at this grid supply point were not found in this edition by their MPAN, grid reference or name and postcode. QueueWatch keeps their pages for six months and does not say whether they have left the register.
- Mynydd Tryfan Wind Farm last found in the August 2026 edition
- Mynydd Tryfan Wind Farm last found in the July 2026 edition
- Mynydd Branar last found in the June 2026 edition
- Mynydd Tryfan Wind Farm last found in the June 2026 edition
- Pant Y Maen last found in the June 2026 edition
- Flint C, Aber Park, Aber Road, Flint, Fl last found in the May 2026 edition
- Mynydd Tryfan Wind Farm last found in the May 2026 edition
- Mynydd Tryfan Wind Farm last found in the April 2026 edition
- Mynydd Tryfan Wind Farm last found in the March 2026 edition
What changed recently
Changes to the sites here found in both of two consecutive monthly editions, the latest first.
August 2026 edition to September 2026 edition: 31 sites matched. 2 sites at this grid supply point couldn't be matched between the two editions, because their details changed or they appear in only one.
- ToyotaAugust 2026 editionStatus changed from “connected” to “accepted to connect”
- ToyotaAugust 2026 editionTechnology changed from Solar to Gas and other fossil
- IcelandJuly 2026 editionStatus changed from “connected” to “accepted to connect”
- IcelandJuly 2026 editionTechnology changed from Gas and other fossil to Solar
- ToyotaJuly 2026 editionStatus changed from “accepted to connect” to “connected”
- ToyotaJuly 2026 editionTechnology changed from Gas and other fossil to Solar
- IcelandJune 2026 editionStatus changed from “accepted to connect” to “connected”
- IcelandJune 2026 editionTechnology changed from Solar to Gas and other fossil
- ToyotaJune 2026 editionStatus changed from “connected” to “accepted to connect”
- ToyotaJune 2026 editionTechnology changed from Solar to Gas and other fossil
- IcelandApril 2026 editionStatus changed from “connected” to “accepted to connect”
- IcelandApril 2026 editionTechnology changed from Gas and other fossil to Solar
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
How power reaches a site
A grid supply point (GSP) is where the national grid hands power to the local network. A bulk supply point (BSP) steps it down to a lower voltage for an area. A primary substation steps it down again for the streets and sites nearby. Most small and medium sites connect at a primary. Not every network has all three levels.