From Open Energy Information

Were other reporting systems considered when developing the GeoRePORT System?

Many systems, used for geothermal reporting as well as methodologies used by other industries, were carefully considered in the development of this protocol. Our review of these systems is documented in the following paper: Katherine R. Young, Anna M. Wall, Patrick F. Dobson, Mitchell Bennett, and Brittany Segneri. 2015. Measuring Impact of U.S. DOE Geothermal Technologies Office Funding: Considerations for Development of a Geothermal Resource Reporting Metric. In: Proceedings, World Geothermal Congress. World Geothermal Congress; 2015/04/19; Melbourne, Australia. Australia: World Geothermal Congress; p. (N/A)

Are developers always looking for attribute grades of "5"?

No - quite the opposite. The low-temperature and minerals recovery technology team of DOE may explicitly target projects with temperature and fluid chemistry attribute values of 1 or 2 to satisfy the specific programmatic needs. Conversely, good projects for DOE's EGS team could occur with the combination of reservoir attributes of 1-2 (i.e low permeability or porosity areas) and temperature attribute values of 3-5. As a result, developers could search for projects based on a "fingerprint" defined by GeoRePORT System characteristics: 1 is not "worst" and 5 is not "best."

Does this classification work for small systems?

Yes! Most small systems have at least 2 wells - one production and one injection well. As a result, the levels of knowledge and the advanced research stages and tests equally apply across sizes of projects.

Why don't you specifically address/quantify risk?

Risk is a statistical concept that describes whether an expected value or event may or may not occur. The goal of the GeoRePORT System is to create a consistent framework for categorizing resource characteristics that exist, not to define the difference between what is measured and what is expected. Therefore, risk is currently outside the scope of this effort.

Does this system capture all GTO metrics used to measure funding impact?

GTO can measure RD&D impacts using any number of metrics (e.g. LCOE). This system provides one such way to measure impact, but is not designed to encompass all GTO research metrics. It is designed to better understand barriers to geothermal deployment and to measure potential impact from research programs designed to overcome these barriers.

Why don't you specifically address project economics?

Project economics varies geographically, temporally, and by developer. Many studies (e.g. geothermal supply curves) and tools (e.g.GETEM) evaluate project cost. The GeoRePORT System is not designed to specifically address costs, however data developed using this methodology can serve as inputs to these - and other - techno-economic models.

How do you define success?

Use of the word "success" in geothermal often refers to well-drilling or project success. The GeoRePORT System was developed not to measure geothermal development success, but to develop research, development and deployment (RD&D) goals for the Department of Energy's Geothermal Technologies Office. The GeoRePORT System was designed to collect data in a systematic way to identify research needs, measure baseline values, set RD&D targets, measure the impact of funding against the measured baseline values, and report the results to Congress and the public. The metrics for success will be defined by DOE goals, based on progress/changes against the measured baseline values.