energy storage

The U.S. power sector is undergoing a major expansion to keep pace with the rising demand for electricity from data centers and other consumers, and trying to do a lot at once. Keep a lid on greenhouse gas (GHG) emissions by adding wind, solar and other renewables. Maintain grid reliability by supplementing variable renewable energy with more around-the-clock sources like natural gas-fired power plants. Oh, and keep power costs down, too. That’s a big collective ask, and to help make it possible, power grids are turning to so-called “virtual power plants” (aka VPPs) that, with an assist from computers and software, aggregate smaller power sources, batteries and flexible demand to provide power to the grid much like a traditional combined-cycle plant would. In today’s RBN blog, we’ll introduce VPPs and explain why they’re worth learning about. 

The intermittent nature of renewable energy is a well-documented thorn in the side of efforts to decarbonize the power grid, especially with more wind and solar generation coming online every year. But while those sources of clean energy are not available all the time, it’s also true that they can sometimes produce more power than transmission lines or a power grid can handle during other periods, leading to curtailments. An increasingly important tool that can lessen the impact of both problems is power storage. In today’s RBN blog, we’ll address the limitations of today’s storage options and look at how long-duration energy storage (LDES) could play a critical role in the years ahead.

When you boil it down, there are only two energy-related responses to Russia’s war on Ukraine. First, there’s a big push to find sources of crude oil, refined products, natural gas and NGLs to replace Russian supplies as quickly as possible. Second, governments on both sides of the Atlantic are scrambling to reaffirm and even expand commitments to lower-carbon energy sources to delink from Russian hydrocarbons as well as meet energy transition goals. Both raise the same question: How fast can the world bring online any new sources of energy on the scale needed? Policymakers would like to believe the answer can be found through the stroke of a legislative pen invoking aspirational language. No one doubts the power of that pen to create incentives or impediments. But the answer to that question is dictated by the realities of the physical world. In today’s RBN blog, we discuss the options for accelerating the availability of the minerals, metals and other materials needed to build the required machinery for the energy transition.

For a few years now, U.S. natural gas producers have benefited from the electric-power sector’s shift from coal-fired plants toward gas-fired ones. The ongoing transition makes sense. Not only is gas-fired generation cleaner, it’s mostly been cheaper than the coal alternative. Better still, gas turbines and combined-cycle plants are very flexible companions to all those new wind farms and utility-scale solar facilities, whose variable output requires at-the-ready replacement power when the wind’s not blowing and the sun’s not shining. But with the continued push by many state regulators — and many utilities — for lower-carbon generation fleets, gas-fired plants are facing a growing challenge from energy storage, mostly in the form of very big lithium-ion batteries. Today, we look into the increasing use of large-scale batteries in utility settings and whether they might pose a serious threat to gas-fired power in the 2020s and beyond.