Skip Ribbon Commands Skip to main content

Transmission and generation adequacy

What you need

The planning of investment in network reinforcements and generation from TSOs or private investors is becoming an increasingly challenging issue because of several sources of uncertainty including markets integration, renewable production penetration, influence of the evolution of drivers on future scenarios, policy decisions and incentive schemes varying from one Country to another.
In this complex framework suitable methodologies and tools are needed to compare and validate investments opportunity in respect to investments costs.

What we do

CESI, on behalf of Terna, developed, on the basis of its experience lasting 60 years, a powerful computer-based tool that evaluates reliability and economic operational capability using probabilistic Monte Carlo named Grid Reliability and Adequacy Risk Evaluator (GRARE).
GRARE has been developed to support medium and long-term planning studies and is particularly useful for evaluating the reliability of large power systems, modeling in detail the transmission networks.
Main applications are relevant to Cost Benefit Analysis, RES integration, new generation sizing and connection point selection, Capacity Remuneration Mechanism application, Total Transfer Capacity definition.


CESI experience on transmission and generation adequacy evaluation is derived from technical analyses in tens of Countries in Europe, Africa, Asia and South America.
The software is property of TERNA, the Italian Transmission System Operator, and it is widely used to support TERNA planning strategies.
GRARE is one of the selected tools to assess European generation adequacy for ENTSO-E Scenario Outlook & Adequacy Forecast.


Brochure GRARE



Follow us on

Share on