Energy Storage Grows as Renewables Penetrate the Grid
- Mar 9, 2018 6:37 am GMT
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The race is on to secure utility-scale energy storage solutions that can help ease the transition to greater volumes of renewable energy on the grid, as utilities are drawn toward cleaner fuel sources because of cost declines and emissions reduction goals.
"Energy storage is a game changer for the electric system, as it enables much higher penetrations of renewable energy and supports the grid more broadly,"
The Independent System Operator-
Grid-connected energy storage in ISO NE territory is estimated to grow 2,000% by 2026, albeit from a relatively small 20-MW installed nameplate capacity base at the end of 2017. However, that only includes battery energy storage and shows there is ample room for additional storage to help balance the ISO`s anticipated renewable energy growth. "The energy landscape is undergoing an unprecedented paradigm shift, as the growth of renewables, decentralization of power and digitization create both new challenges and opportunities in how power is generated, transmitted and distributed,"
Liquid Air Energy Storage takes a page from the liquefied natural gas playbook by super cooling ambient air to a frozen liquid state, storing it in a tank and turning it back into a gas that spins a turbine when power is needed.
"Some in the energy industry are convinced that long-duration storage -- which liquid air energy storage has the potential to become -- is key to unlocking a higher-renewables future," Speakes-Backman said.
Using established processes from the power generation and industrial gas sectors, LAES is a proprietary technology designed by
"LAES technology cost-effectively addresses the long duration energy storage use cases required by utilities and government policy,"
LAES solutions can deliver anywhere from 10 MW/40 MWh to more than 200 MW/1.2 GWh of energy at "half the cost of lithium-ion batteries," according to the statement. TREND OF RENEWABLE PROJECTS WITH STORAGE
Wind and solar projects are increasingly incorporating energy storage systems that can provide grid services and store power generated when electricity prices are low for sale into the wholesale market when power prices are higher.
For example, AES said during a recent earnings call with analysts that it has signed long-term power purchase agreements for two "solar plus storage" facilities in