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A thriving Yorkshire.
Right for customers.
Right for the environment.
All water companies must produce business plans every five years. The business plans set out what water companies intend to deliver for customers and the environment. These plans must follow a specific process and then be submitted to Ofwat – the water industry’s economic regulator. Ofwat will assess the plans and make decisions about the amount of revenue we can recover from customers through their bills that can be spent to deliver the plans.
Read more information from Ofwat
We look beyond five years to ensure that we’re making good decisions for our customers and the environment – now and in the future.
This is our business plan for the period 2025 to 2030 which forms the first five years of our 25-year Long-Term Delivery Strategy.
Our vision is to create a thriving Yorkshire, right for customers and right for the environment. This means achieving the following outcomes:
Deliver safe, clean, great tasting water and ensure we can continue to meet water demand in future.
Provide a tailored, reliable service and make sure that we are easy to interact with, in whatever way our customers choose to get in touch.
Deliver value for money to our customers, keep bills as low as possible, and offer the right support to customers who struggle to pay.
Build and operate efficient, climate-resilient infrastructure to provide reliable services for our customers.
Reduce pollution and sewer flooding, improve river quality, and enhance biodiversity across the region.
Reduce carbon emissions towards net zero across our business and supply chain.
Our draft determination representation
Our £8.2bn plan represents the start of a once in several generations approach to increasing resilience in our clean water supply, so important given the variability of our climate and the challenges with population growth.
It supports the changes we want to make to waste water treatment and will be our biggest ever environmental investment, which includes re-prioritised spend on storm overflows and continued support for flood resilience schemes like our Living With Water project in Hull.
Consultation with our customers and stakeholders has shown the importance of both these issues and we have responded to Ofwat’s feedback refocussing our five-year plan for 2025-2030, allowing us to deliver what is right for our customers and the environment.
We know we need to make sure there is a balance to ensure it’s affordable for customers, as well as not passing the bill onto future generations. To support those who are struggling to pay their bills, we’re proposing to increase the funding for our social tariff from £30m per year to £55m per year which will help us to support a further 65,000 customers.
Our representation documents
YKY-PR24-DDR-01-Executive summary
YKY-PR24-DDR-01A-Changes-to-our-plan-(Redacted)
YKY-PR24-DDR-02-Cost efficiency-Part 1-Introduction and base costs
YKY-PR24-DDR-03-Cost-efficiency-Part-2-enhancement-costs-water-Redacted
YKY-PR24-DDR-04-Cost-efficiency-Part-3-enhancement-costs-wastewater
YKY-PR24-DDR-05-Cost-efficiency-Part-4-cross-cutting-issues
YKY-PR24-DDR-06-Outcomes-for-customers
YKY-PR24-DDR-07-Price-control-deliverables
YKY-PR24-DDR-08-Finance-risk-and-return
Supporting appendices
YKY-PR24-DDR-12-CE-Unmodelled-cost-report-appendix
YKY-PR24-DDR-13-CE-Lane-rental-appendix
YKY-PR24-DDR-14-CE-Oxera-base-costs-appendix
YKY-PR24-DDR-15-CE-Oxera-post-modelling-adjustments-and-CAC-appendix
YKY-PR24-DDR-16-CE-Oxera-cost-outcomes-disconnect-appendix
YKY-PR24-DDR-17-CE-EI-The-importance-of-a-balanced-approach-to-frontier-shift
YKY-PR24-DDR-18-CE-EI-Frontier-shift-update-appendix
YKY-PR24-DDR-19-CE-WaterUK-Bioresources-uncertainty-land-bank-appendix
YKY-PR24-DDR-20-CE-Waste-Permitting-Cost-Sharing-Proposal-appendix
YKY-PR24-DDR-26-CE-Clean water enhancement cost evidence - redacted
YKY-PR24-DDR-28-CE-Supporting-evidence-for-metering
YKY-PR24-DDR-29-CE-Supporting-evidence-for-biodiversity-enhancement-appendix
YKY-PR24-DDR-32 -Coastal-bathing-waters-non-statutory-appendix
YKY-PR24-DDR-33-Living-with-water-appendix - redacted
YKY-PR24-DDR-35-CE-Water-Resilience-New-WTW-redacted
YKY-PR24-DDR-36-WINEP-investigation-dates
YKY-PR24-DDR-37-CE-Resilience-clean-water-appendix
YKY-PR24-DDR-38-CE-Resilience-wastewater-appendix
YKY-PR24-DDR-39-CE-PFAS-Investigations-enhancement-case-appendix
YKY-PR24-DDR-40-CE-Loss-of-landbank-enhancement-case-appendix
YKY-PR24-DDR-41-CE-New-SRO-Enhancement-case-appendix
YKY-PR24-DDR-42-CE-Wastewater-modelling-approach
YKY-PR24-DDR-43-OC-ISF-appendix
YKY-PR24-DDR-44-OC-PCC-appendix
YKY-PR24-DDR-47-OC-Bathing-water-quality-appendix
YKY-PR24-DDR-48-FR-KPMG-Risk-appendix
YKY-PR24-DDR-49-FR-KPMG-Estimating-Cost-of-equity-report
YKY-PR24-DDR-51-FR-KPMG-Cost-of-embedded-debt [WaterUK]
YKY-PR24-DDR-54-FR-Frontier-Run-off-rate-report
YKY-PR24-DDR-55-FR-Frontier Economics–Additional-Considerations-Allowed-Return-on-Equity
Data tables, models and commentary
YKY-PR24-DDR-60-Summary-Tables
YKY-PR24-DDR-61-Data-Table-Commentary
YKY-PR24-DDR-62-Past-Delivery-and-Reconciliation-Commentary
YKY-PR24-DDR-64-Additional-Data-Tables
YKY-PR24-DDR-65-CWW21-Legacy-and-S105-sewers-additional-information
YKY-PR24-DDR-66-CWW21-Rising-mains-additional-information
YKY-PR24-DDR-67-Financial-Model
YKY-PR24-DDR-68-RCV-Adjustments-Feeder-Model
YKY-PR24-DDR-69-Revenue-Adjustments-Feeder-Model
YKY-PR24-DDR-70-Revenue-Forecasting-Incentive-Model
YKY-PR24-DDR-71-Cost-of-New-Debt-Reconciliation
YKY-PR24-DDR-72-Tax-Reconciliation
YKY-PR24-DDR-73-RPI-CPIH-Wedge-Model
YKY-PR24-DDR-74-Residential-Retail-Reconciliation-Model
YKY-PR24-DDR-75-Developer-Services-Reconciliation-Model
YKY-PR24-DDR-76-Bioresources-Revenue-Reconciliation-Model
YKY-PR24-DDR-77-Land-Sales-Model
YKY-PR24-DDR-78-WINEP-Reconciliation-Model
Our Business Plan
Latest information on our PR24 business plan
Since submission of our PR24 business plan to Ofwat in October 2023, we have made changes to parts of our plan. These have been in response to requests from Ofwat or other regulators and to clarify some points in our original plan. The result of these changes to date is that Ofwat are now considering a PR24 business plan for Yorkshire Water that includes total expenditure of £7.6 billion (down from £7.8 billion in our October 2023 plan), and average annual customer bills of £569 by 2030 (down from £585 in our October 2023 plan). Ofwat's draft determinations will be based on this expenditure and these bills.
The reason for the change to our total expenditure for PR24 and associated average annual customer bills is largely a result of subsequent changes made to our draft Water Resource Management Plan and rephasing of our Environmental Programme (WINEP).
Our business plan for 2025-2030
Our main business plan is the detailed plan that we submitted to our economic regulatory Ofwat on 2 October 2023. It contains:
Our business plan for 2025-2030 includes the following content:
Our region
Introduction from our CEO
A summary of our plan
Chapter 1 – Strategic context
Chapter 2 – Bills and affordability
Chapter 3 – Environmental and social value
Chapter 4 – Efficiency and innovation
Chapter 5 – Our Long-Term Delivery Strategy
Chapter 6 – Customer and stakeholder engagement
Chapter 7 – Delivering outcomes for customers
Chapter 8
- Section 1 – How we built our plan
- Section 2 – What our plan will deliver
- Section 3 – How we will deliver our plan
Chapter 9 – Risk and reward
Chapter 10 – Board assurance
Appendices
Data tables, models and commentary
Supporting Information
Our submission includes links to relevant supporting information.
We already undertake a number of activities day-to-day, and that you may be interested in:
- Yorkshire Forum for Water Customers Report
- Stakeholder engagement – we continuously work in partnership with our stakeholders, both at a local, regional and national level. Find out more about the Yorkshire Leaders Board forum
Your water, your say
- Customer engagement – we continuously engage our customers to understand what their priorities are, and these have helped to shape our plan.
As part of the business plan development, we held two 'Your water, your say' engagements in June and November 2023.
Visit our Your water, your say section 
Appendices
Chapter 2_Frontier economics affordability report
Chapter 2_Supporting customers in vulnerable circumstances
Chapter 3_Nature First commitment
Chapter 4_Research & Development Innovation Strategy Process and Objectives for PR24
Chapter 5_Long-Term Delivery Strategy
Chapter 6_Yorkshire Water customer research as specifically quoted in Chapter 6
Chapter 6_The Yorkshire Forum for Water Customers summary of engagement and log of challenges
Chapter 6_Our research partners
Chapter 6_Stakeholder responses to Ofwat’s PR24 draft methodology
Chapter 6_Letters of support for our PR24 Business Plan
Chapter 6_Summary of 'Your water, your say' event
Chapter 6_Summary of engagement with Yorkshire Leaders Board
Chapter 6_Yorkshire Water response to the Wildlife and Countryside Link's Blueprint for Water
Chapter 6_Alignment with Ofwat's customer engagement standards
Chapter 6_Alignment with Ofwat's customer engagement principles
Chapter 7_Detailed performance commitments
Chapter 8_Oxera cost modelling
Chapter 8_Real Price Effects appendix
Chapter 8_Frontier shift appendix
Chapter 8_Introduction to enhancement cases
Chapter 8_Supply-demand enhancement case
Chapter 8_Metering enhancement case
Chapter 8_Water quality improvements enhancement case
Chapter 8_Water resilience enhancement case
Chapter 8_Security (ECAF) enhancement case
Chapter 8_Net zero enhancement case
Chapter 8_Living With Water enhancement case
Chapter 8_Coastal bathing water overflows enhancement case
Chapter 8_Growth at sewage treatment works enhancement case
Chapter 8_Appropriate measures enhancement case
Chapter 8_WINEP enhancement case
Chapter 8_Annex to the WINEP enhancement case
Chapter 8_Cost adjustment claims
Chapter 8_Oxera cost adjustment claim analysis
Chapter 8_Bioresources strategy
Chapter 8_Retail Service priorities for 2025-2030
Chapter 8_Bad debt pressures on bill forecasts
Chapter 8_Developer services strategy
Chapter 8_Non-household Wholesale Market Services
Chapter 8_Business resilience appendix
Chapter 8_DPC approach and assessment
Chapter 9_Uncertainty mechanisms and RoRE risk analysis
Chapter 9_Notional financeability analysis
Chapter 9_Reconciliation of past performance
Chapter 9_Financial resilience
Data tables, models and commentary
Commentary_Data Table Commentary - Section 1 Outcomes
Commentary_Data Table Commentary - Section 2 Risk & Return
Commentary_Data Table Commentary - Section 3 Costs - Water
Commentary_Data Table Commentary - Section 4 Costs - Waste Water
Commentary_Data Table Commentary - Section 5 Water Resources
Commentary_Data Table Commentary - Section 6 Bioresources
Commentary_Data Table Commentary - Section 7 Retail
Commentary_Data Table Commentary - Section 8 Developer Services
Commentary_Data Table Commentary - Section 9 LTDS
Commentary_Data Table Commentary - Section 10 Supplementary
Commentary_Data Table Commentary - Section 11 Sum
Commentary_Data Table Commentary - Section 12 Past Delivery
PR24 Revenue Adjustments Feeder Model
Revenue Forecasting Incentive Model
Residential Retail Reconciliation Model
Strategic Regional Water Resources Reconciliation Model
Bioresources Revenue Reconciliation Model
CW20 Additional Supporting Cohort Table
CWW21 Additional – Legacy sewers
CWW21 Additional – Rising Mains
CWW21 Additional – s105A sewers
CWW21 Additional – Pareto analysis for legacy and s105A combined