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Research and publications

EVRI - Environmental valuation reference inventory

Logo: EVRI
EVRI records by category
Environmental assetRecords
Water (general)1034
Animals (general)1010
Land (general)793
Air 314
As of July 2009


What is EVRI?

EVRI is a comprehensive storehouse of over 2,000 international studies providing values, methodologies, techniques and theories on environmental valuation. This Canadian-run resource facilitates the worldwide development and promotion of environmental valuation using the benefits transfer approach. Free access is available to all citizens of member countries - Australia, Canada, France, New Zealand, UK and USA.

Key features include:

  • a website with state-of-the-art search engines
  • a database dedicated to the environmental valuation of various natural assets
  • a reference library on benefits transfer theory.

Environmental valuation

Environmental valuation is a specialised field of economics that develops methodologies and techniques to value the environment. It is supported by a rigorous theory of welfare economics. Valuation techniques are used globally to support research, policy development and regulation. Two broad categories of environmental valuation exist:

  1. stated preference - asking people directly how much they would be willing to pay for a change in an environmental good or service (contingent valuation and choice modelling studies)
  2. revealed preference - inferring monetary values by observing market prices associated with environmental assets (e.g. travel cost method and hedonic pricing studies).

Benefits transfer

The benefits transfer approach is a time-saving and cost-effective approach that uses economic values from previous studies and applies them to address current policy challenges. For example, this approach can guide and complement primary valuation research and also help in the design of policy instruments. More specifically, it can provide estimations for cost-benefit analyses and impact assessments, encouraging the internalisation of pollution costs and appreciation of natural capital tradeoffs.

Future developments

  • Increasing the number of Australian studies in EVRI.
  • Incorporating DECCW's ENVALUE database into the EVRI database.

Signing up is easy and free!

Australian residents currently have free access to this growing database. EVRI is an invaluable resource for economists, researchers, policymakers, consultants, students and others interested in environmental valuation.

To sign up, go to, select the English site and click on 'Register/Login' from the menu on the left. After accepting the licence agreement, fill in your details, noting down your username and password. EVRI will confirm submitted registrations within 1 business day.

Information and contact

EVRI encourages information exchange with users regarding suggested studies for capture. EVRI also appreciates advice about emerging issues within environmental valuation and welcomes general feedback. Please visit

For information on DECCW's involvement contact: David Godden(


DEC 2006/518

Page last updated: 05 February 2014