It’s Out: A Quick Review of the Just Released US Department of Energy Grid Reliability Study

In April, newly appointed U.S. Secretary of Energy Rick Perry called for a study of the U.S. electricity grid. He wanted the study to reveal why so many coal plants were retiring and whether or not energy policies (renewable folks, think the ITC, PTC, RPS) were distorting the market and making the grid unstable.

As most in the energy industry knew, the answer is incredibly nuanced. The 187-page report, released today, details the many reasons impacting the retirement of coal plants — the fact that they are old, in need of upgrades, costlier to run than natural gas plants, and not running at full capacity — are just some of them.

The report also explains the reasons for the uptick in renewables, which it calls VRE (variable renewable energy) and points out that lots of government money has been spent in R&D to bring down technology costs and in direct subsidies to VRE power plants. But it also attempts to uncover some of the more nuanced reasons for the growth of renewables and rightly points out that many of those attributes are not compensated by the design of the wholesale market.

Americans and their elected representatives value the various benefits specific power plants offer, such as jobs, community economic development, low emissions, local tax payments, resilience, energy security, or the national security benefits associated with a nuclear industrial base. Most of these benefits are not recognized or compensated by wholesale electricity markets, and this has given rise to a variety of state and private efforts that include keeping open or shutting down established baseload generators and incentivizing VRE generation.

The report then delves into reliability and resilience and affordability. It’s final policy recommendations include reforming wholesale electricity pricing in centrally-organized markets, coming up with a valuation for essential reliability services, ensuring that the bulk power system is resilient and the promotion of R&D for “next generation/21st century grid reliability and resilience tools.”

Rocky Mountain Institute’s Amory Lovins released the following commentary about the study:

What the summary gets right

The summary of the DOE study findings and recommendations identifies several important points that are critical to address as we navigate the future of the grid:

  • Market forces driving baseload retirements. The DOE authors note that market forces (e.g., the falling costs of renewables, the currently low price of natural gas, and stagnating demand growth) are largely to blame for the economic threat to baseload power plants. This is consistent with the findings of a leaked draft of the full DOE study and the conclusions of respected industry analyses, which have found that low natural gas prices are primarily to blame for the challenges facing coal and nuclear generators.
  • Market design can be improved. US electricity markets were designed for an era when large, central power plants competed only with each other. Now that renewable energy, and particularly wind and solar power, is emerging as the least-cost resource, many observers agree that there is a pressing need to reexamine how we define products and compensate market players to ensure that our market rules reflect this paradigm shift in the costs and capabilities of non-traditional resources.
  • An emphasis on resilience. The summary notes that while US energy markets are effective in providing for system reliability—the ability to deliver power consistently—they do not serve as well to promote the resilience of our grid—the ability to recover from a disturbance. We need to rethink how we define and compensate resources for these services, including on the demand side.

What the summary leaves out

The study summary identifies important challenges, but fails to account for the possibility, and indeed the current reality, that renewable energy and distributed energy resources are increasingly a better choice to address these challenges than conventional power plants.

  • Distributed energy resources can improve affordability, reliability, and resilience. The study summary suggests that states that retire baseload generators are “accepting increased risks that could affect the future affordability, reliability, and resilience of electricity delivery.” On the contrary, a growing body of evidence suggests that states and countries that replace old, costly fossil-fired generators with renewables, efficiency, demand response, and other distributed energy resources (DERs) have found that the opposite is true: that these resources can provide the same or better services at lower costs.
  • “Fuel assurance” is not a proxy for resilience. The summary of the DOE study suggests that “fuel assurance” – i.e. the presence of a local stockpile of fuel on-site at a generator – should be valued. In fact, “fuel assurance” is by no means assured for fossil-fuel fired power plants, which face many risks beyond on-site fuel availability that can and do affect their ability to provide power to the grid.
  • Grid infrastructure can be distributed. The summary recommends that Federal and state agencies accelerate “licensing, relicensing, and permitting of grid infrastructure such as nuclear, hydro, coal, and advanced generation technologies.” This reflects a 20th Century view of the definition of “grid infrastructure.” Today, the most reliable, resilient, and cost-effective “infrastructure” investment opportunities can be found behind the meter, in brownfield suburban lots, in your basement, or sprouting from the Great Plains. Reinforcing a dated definition of “infrastructure” leaves out the opportunities offered by these resources.

Missing the opportunity at hand

The summary of the DOE’s study identifies the right issues to address, but in its narrow conception of 20th Century technology as the solution, it misses out on the opportunity to reap the benefits of 21st Century innovation and drive the US grid towards a least-cost, reliable, and resilient future. The study summary recommends that the US seek “energy dominance” – but it suggests that we look backwards to find it. To truly dominate in the new energy economy, we should gracefully retire the aging baseload assets whose time has come, embrace the opportunities offered by new technologies and continued innovation, and secure the United States’ position as a leader, not a laggard, in the global energy transition.

Renewable Energy World will continue to publish commentary from electricity industry thought-leaders about how the US DOE Grid Study will impact the future of electricity in the country.

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Jennifer Runyon has been studying and reporting about the world's transition to clean energy since 2007. As editor of the world's largest renewable energy publication, Renewable Energy World, she observed, interviewed experts about, and reported on major clean energy milestones including Germany's explosive growth of solar PV, the formation and development of the U.S. onshore wind industry, the U.K. offshore wind boom, China's solar manufacturing dominance, the rise of energy storage, the changing landscape for utilities and grid operators and much, much, more. Today, in addition to managing content on POWERGRID International, she also serves as the conference advisory committee chair for DISTRIBUTECH, a globally recognized conference for the transmission and distribution industry. You can reach her at

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