QueueWatchby QueueQuant Price my project Get the plan that holds up best for your site, and where that answer flips.
Distribution / SPEN / Site

Watson Street

Sembcorp Energy UK at Rainhill

SPEN Embedded Capacity Register >1MW, September 2026 edition

Site, company and substation names are shown as they appear in the registers, including capitalisation.

Date connected
23 Dec 1999
Status
Connected
Customer
Sembcorp Energy UK
Site name
Watson Street
Address
Burtonhead Road, St Helens, St Helens, Merseyside, WA9 5EA
Grid reference
Easting 350919, northing 394669
Licence area
Merseyside, Cheshire and North Wales (SPM)
Grid supply point
Rainhill
Bulk supply point
RAVENHEAD G1A1 / ST HELENS GT2B / WINDLE GT1
Primary substation
BURTONHEAD ROAD (WATSON STREET T1 T2)
Connection voltage
33 kV
Technology group
Gas and other fossil
Energy source 1
Fossil - Gas, Steam-gas turbine (CCGT): 10 MW registered
Registered capacity
10 MW
Maximum export capacity
10 MW
Maximum import capacity
0 MW
Flexible connection
Not stated
In a connection queue
No
Date accepted
Not stated
Target energisation date
Not stated
Distribution reinforcement reference
Not published by SPEN
Transmission reinforcement reference
Not stated
Export MPAN
1300050867755
Import MPAN
1300035355999
Last updated
11 Nov 2020
Tracked since
March 2026 edition

Change history

Tracked since the March 2026 edition, across 7 editions.

Changes to its status, capacity, technology or customer, newest first.

No change to its status, capacity, technology or customer.

Also at Rainhill

GSP view

26 other sites at this grid supply point in the September 2026 edition. In all, the sites here total 216 MW: 183 MW connected, 33 MW accepted to connect.

See all 26

QueueQuant

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.

Price my project

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