Official UK procurement notice
Market Engagement Notice - Biogas Assets, Digester Maintenance and Tanks
Authority: Southern Water Services Limited (Public body)
What is being bought
Published requirement descriptionGeneral Requirements –
- Design and specification
- Manufacture and/or supply
- Installation and commissioning
- Planned preventative maintenance (PPM)
- Reactive maintenance and repair
- Refurbishment and replacement
- Process optimisation and performance improvement
For the following areas -
A. Digester Systems - Southern Water operates 43 digesters across 16 Sludge Treatment Centres (STCs), with a full cleaning and maintenance cycle typically undertaken on a circa 9-year basis. Between major interventions, assets undergo routine inspection and maintenance to ensure continued safe and efficient operation.
B. Biogas Assets - Southern Water operates a range of biogas assets supporting anaerobic digestion and energy recovery processes. These assets are critical to operational performance and safety compliance
C. Tank Systems (Non-Concrete) - Southern Water operates a range of non-concrete tank systems across its water and wastewater operations – circa 200+. These assets are used for a variety of applications including the storage of drinking water, wastewater and sewage treatment, process water, industrial effluent, anaerobic digestion/biogas processes, and bulk solids.
CPV: Sludge-processing equipment · Sludge-storage tanks · Sludge-treatment works · Water tanks
How this framework works
From the published notice- Framework period
- 4 yrs · up to 8 yrs from 30 Apr 2027
The lotProcurement structure
single lot · no lot value publishedWhat it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
- “Market Engagement Notice - Biogas Assets, Digester Maintenance and Tanks” is a framework: the contest is a place on its panel, not a single contract.
Pipeline intelligence · planning stage: how this market runs before the tender is published
How Southern Water Services Limited buys Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork (CPV 4523), and who usually turns up
Southern Water Services Limited’s published record next to the market for the same work. Compared with other frameworks and DPS only. Whole-market view: Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork (CPV 4523) →
How the contest usually goes
Winner shares use published awards; bid and price charts use contested lots.
i
How often small and medium firms win.
Share of awards where the winner’s size is known.
The counts under this question show how many awards have a known supplier size.
Small firms have won here. Neither number says whether you qualify; it describes who has been winning.
i
How often local firms win similar work.
Winners with a registered address in the delivery region, out of awards with a known address.
Local means the winner is registered in the region where that award was delivered. The market figure counts awards delivered in South East England.
A local branch does not count if the registered address is elsewhere.
Most of this buyer’s recorded winners were registered outside the region where that award was delivered.
i
How long buyers here take to decide after bids close.
Middle value in days from the bid deadline to the award date, on competitions that published both.
Only decided tenders count, so slow ones still waiting are not in.
Half of these awards have an award date within 138 days of the bid deadline.
i
How often work is awarded with no recorded rival.
Direct awards and tenders where every published lot count shows one bid.
Both shares are minimums: some awards have no bid count.
Thin markets produce this too; it is not proof of a tailored specification.
Missing bid counts may hide more single-bid awards. This share is a minimum.
How many bids did past lots attract?
i
How many bids past lots received.
Each colour is a bid-count range. Only competed lots with a published count are included.
Past bids do not predict this tender.
1 bid12% / 0%
2–355% / 0%
4–627% / 14%
7+6% / 86%
How did awards compare with estimates?
i
Where winning prices landed against estimates.
Each colour shows awards below, close to or above the published estimate, one lot at a time.
On a framework or DPS, prices are agreed when work is called off.
Past prices are a guide, not a bid price.
Not comparable on a framework or DPS: the price is set later, on each call-off.
Assess each lot i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
i
What past awards tell you about each lot.
See the forecast, this buyer’s earlier suppliers and firms with relevant wins.
No supplier is confirmed as a bidder.
Open a lot for its forecast, this buyer’s previous supplier and possible competitors, from published award history, not a bid list
Lot #1CPV 4523Estimate not published
i
How many bids this lot may attract.
The forecast uses similar past competitions. The bar shows either that forecast or past bid counts; the line below says which.
Each lot shows its own forecast based on its own category; forecasts for different lots of the same notice are not comparative. The bar shows 143 past lots.
A forecast, not a list of bidders.
1 bid1%
2–311%
4–617%
7+70%
i
Where the award price may land.
The forecast uses similar awards and the buyer’s estimate. The band covers the middle half of likely prices.
No comparable awards for this lot yet.
A statistical guide from past awards, not a price to bid.
Who has supplied this buyer on similar work? i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
i
Who has done similar work for this buyer.
Past contracts are matched by buyer, title and type of work.
A past supplier may not bid again.
No earlier contract of this buyer matches this lot on the published record.
Who could compete for this lot? i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
i
Who could compete for this lot?
Firms with relevant past wins. On a framework, we show firms on that agreement.
None is confirmed as a bidder.
Candidate suppliers for this notice have not been worked out yet, so this is not a verdict that nobody fits.
About this data
- Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
- Two views, kept apart. The authority’s own track record and the wider market for the same kind of work sit side by side and are never mixed. Where the local picture is too thin, a figure widens to a broader market and says which one it used.
- Forecasts are labelled. The price forecast and its range, possible competitors and the earlier-work matches are our estimates from past awards: not published facts, not win chances and not price advice. Official notices do not say who is bidding.
- Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.
Procedure terms & legal framework
From the official record- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Goods
- Notice status
- Planned procurement
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Utilities
- Commercial structure
- Framework agreement
- Who may use this agreement
- Not stated in the notice; call-off rights may be limited to the establishing authority
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 19 Jun 2026, 15:42 BST
- Last source update
- 19 Jun 2026, 15:42 BST
- Authority reference
Prj_8400- FTS notice number
2026/S 000-058218- Latest notice
- Preliminary market engagement notice (UK2)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-06b976Find a Tender
How it was run
Official notice- Appointment period ends
- —
Timeline
19 Jun 2026 → 30 Apr 2027 · 4 dates- Planning notice published128 days ago19 Jun 2026, 15:42 BST
- Market engagement71 days ago14 Aug 2026, 23:59 BST
Please not this is not a call for competition
Note: If you are already registered on Southern Water's sourcing portal please go straight to Step 2 below
If you are unregistered please follow the instructions below to register
- Register your company on the Jaggaer sourcing portal (this is required only once)
To register or log in please go to - southernwater.bravosolution.co.uk/web/login.html ↗
Select the "Login or register to participate" link above and click the "Register Now" link on the home page
Accept the terms and conditions and click "Next"
Enter your correct business and user details
Note the username you chose and click "Save" when complete
You will shortly receive an email with your unique password (please keep this secure)
- Respond to the PQQ/ITT
Login to the portal with your username/password
Click the PQQs open to all suppliers or ITTs open to all suppliers' link.
Click on the relevant PQQ/ITT
- Tender notice expected68 days ago17 Aug 2026, 23:59 BST
- Today25 Oct 2026
- Contract startsin 187 days30 Apr 2027, 00:00 BST
Notice history
1 event · 1 release on Find a Tender- Preliminary market engagement notice published19 Jun 2026, 15:42 BSTUK2
Commercial outcome & contract awards
Pipeline notice- Awards (0)
- No award published
- Contracts (0)
- No contract published
- Bid statistics
- No aggregate bid statistics published
Contracting authority & participating public bodies
Official documents & specifications (1)
Official links; attachments are not copiedNotices published for this procedure
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender