Projects Severn Trent Water
View all projects


Case Studies Water

Severn Trent Water, United Kingdom

Severn Trent Water (STW)serves over eight million customers across the UK, operating from the Bristol Channel to the Humber, and from mid-Wales to the East Midlands. With a wide variety of assets on their portfolio and a growing customer base, STW needed to up their data management game to ensure they were making the right investment choices for their future. Through Arcadis Gen’s Enterprise Decision Analytics solution, they were able to optimize this key part of their operation and set up more efficient ways to manage their assets.

More confidence in making investment decisions

Enhanced control over both below and above ground assets

Ability to set up different scenarios and compare outcomes over a time period

The Challenge
For over a decade, STW’s decision-making roadmap has combined investment scenarios, risk and uncertainty, conducting thousands of optimizations each year. Because this was a time consuming exercise, they needed a proven decision support tool that was capable of complex asset-level investment modelling, risk management and optimization.

The Solution
With our industry-leading Enterprise Decision Analytics (EDA) software, STW now manages all their asset and portfolio optimization needs in a single, web-based, platform. EDA’s rich visualization dashboards enhance communications, and predictive analytics allow STW to plan for the future with confidence

The Result
With Enterprise Decision Analytics they are now maximizing returns for shareholders and can say with confidence that their 4.3 million customers are getting value for money.

Using EDA, STW have made significant changes to their planning processes and culture for non-infrastructure assets, creating cost efficiencies of more than 15%.

This performance has placed them consistently in the upper quartile in industry rankings, and their record of significantly and consistently outperforming performance commitments to the regulator has resulted in record-breaking rewards of £50 million.

“We have worked collaboratively with Arcadis Gen in support of our PR19 business plan and we have been using their Enterprise Decision Analytics (EDA) system to help us make more informed and optimal decisions.

Our journey started in PR04 and since then we have extended and evolved our suite of asset models to cover all of our above and below ground assets. These asset models ensure the decisions we make are fully optimised and provide long term asset resilience to our customers.

For PR19 we combined the power of our asset deterioration models with EDA Portfolio which enabled us to carry out cross asset optimisation, thus providing a truly optimised TOTEX and cost benefit approach to our plan.

We are particularly proud of our Water Infrastructure Supply and Demand (WISDM) model where we have pushed the boundaries of water resource planning by exploring advanced uncertainty analysis in the form of "adaptive pathways" and "real options". This industry leading approach in EDA explores the resilience of our plan against many possible futures to ensure our customers have a sustainable security of water supply.”

Min Grimshaw, Severn Trent Water, Head of Regulator Oversight.

Learn more about Gen’s other innovative enterprise and cloud-based digital solutions.

Discover how EDA can transform your business.


Joe Roebuck,

Global Analytics Leader

With over 20 years experience in the water, energy and transport sectors, Joe intends to keep pushing the envelope so sectors, particularly water, can make the best use of their data and analytics to meet current and future demands.

Did you find this information useful?

Did you find this information useful?

Email must be formatted correctly.

Thank you for your feedback!


You may also like