News & Blog

China sets aggressive goals to develop high penetration of renewable energy but also suffers from the large scale of curtailment due to the lack of power system flexibility. The electric power, gas, and heat systems work on different but complementary time and space scales. Multiple energy systems (MES) increase the efficiency and flexibility of both…

Renewable resources that are variable will continue being deployed on the bulk power system and in wholesale markets. Between existing financial incentives (aka subsidies), enormous technological advances, cost reductions, state mandates, and consumer demand for lower or zero emitting resources, variable resources in the form of wind and solar are here to stay and will…

ERCOT runs its Security-Constrained Economic Dispatch (SCED) every five minutes and sends resulting targeted output levels for the next five-minute dispatch interval to each generator. This set of output levels results in the most economic generation being used to serve the expected generation requirement, taking into account the operating characteristics of the generation units, the…

How we got here You’ve come a long way, baby!  That’s how I feel sometimes when I think about the early days of the Utility Wind Interest Group (UWIG).  We started UWIG in 1989 with six US utilities, and now we are the Energy Systems Integration Group (ESIG) with 180 members from around the world!…

The electric grid as we know it is changing. The generating resource mix is shifting with the retirement of natural gas, coal and nuclear plants combined with the introduction of renewable energy resources such as wind and solar photovoltaic (PV) power plants. With these changes come changes in the technology deployed on the bulk power…

The operation of power systems with high shares of wind and solar energy requires reliable tools to facilitate a secure grid and market integration. For over 15 years many firms and research institutes around the world have been developing and operating forecast systems to capture the weather-dependent variability in the power production of a huge…