Our five-year plan for 2015 to 2020

Every five years Thames Water goes through a process called the Price Review. During the price review, we formulate our plans for the next five years and the limit is set for customer bills during that period. Our regulator, Ofwat, approves this plan.

In February 2015 we accepted Ofwat’s feedback on our Plan for 2015 - 2020. Watch the video to find out more.

Future of the water sector – Service Incentive Mechanism

We commissioned Deloitte to carry out a statistical exploration of the water industry Service Incentive Mechanism (SIM), to support Ofwat’s review of SIM as part of its Water 2020 work.

SIM is applied across the water industry by Ofwat, our economic regulator, to incentivise water companies to improve their customer service.

Approach to input price inflation for the retail household price control

We commissioned Economic Insight to develop a report to support the development of a methodology for allowing for inflationary pressures within retail household for the 2019 price review. 

The retail household price control was first introduced at the 2014 price review. This report seeks to support Ofwat, the economic regulator, in further developing the approach to input price inflation for the 2019 price review.

Approach to input price inflation for the retail household price control

We commissioned Economic Insight to develop a report to support the development of a methodology for allowing for inflationary pressures within retail household for the 2019 price review. 

The retail household price control was first introduced at the 2014 price review. This report seeks to support Ofwat, the economic regulator, in further developing the approach to input price inflation for the 2019 price review.

Towards a risk and reward framework for PR19

Given the importance of implementing a coherent, reasonable overall risk and reward package for the 2019 price review, we commissioned EY to examine different ways in which the performance commitments, outcome delivery incentives, totex allowances, totex incentives, the allowed rate of return and the required rate of return can be combined. This report seeks to support Ofwat, the economic regulator, in refining its methodology for PR19.

Also in this section

Supporting information Technical annexes