The operation of EnerVault Turlock is the next step in EnerVault's pursuit of utility scale, long duration energy storage solutions capable of providing emissions - free,
flexible generation needed for higher penetrations of renewable energy and greater grid resiliency.
Recuperation is a technology involving precise control of the vehicle's electrical system and alternator to allow
flexible generation of electricity.
The state is facing resource adequacy concerns as well as the need for
more flexible generation resources to help complement more variable - output renewable resources, particularly solar, being added to the system.
«CSP adds significant additional value when compared to
less flexible generation sources,» NREL CSP Group Manager Mark Mehos, co-author with Jennie Jorgenson and Paul Denholm of the study, said.
This could not only replace some conventional generation but could «provide a more
flexible generation mix» that would «result in greater use of non-dispatchable solar PV and wind.»
Those nine measures were: investment in the transmission grid; investment in cross-border interconnection; prioritisation of
domestic flexible generation; market reform to boost flexible resources; support for demand - side flexibility; better wind and solar power forecasting; a more responsive distribution grid; making renewables more responsible for meeting demand; and national leadership in enabling renewables.
Relatively few respondents indicated concerns about other typical issues associated with renewable energy growth, such as transmission constraints, stranded assets, or having
enough flexible generation to meet demand.
«There is the issue of how to
reward flexible generation and storage, so that the system is always able to respond when wind and solar generation drops.»
Spending to upgrade and build out the electricity network, at a record USD 20 billion in 2015, is already playing a crucial enabling role, in addition to better use of
existing flexible generation.
Bigger, cleaner supply: A regional grid makes it easier to
access flexible generation from a larger pool of resources, which will make it easier to meet electricity demands when renewables are not as plentiful (like when solar generation declines in the evening).
Flexible generation needs to start up when solar PV generation ramps down at sundown — just as consumers arrive back from work and fire up the comforts of home.
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