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LBNL Compares Standalone Battery, Renewables+Storage (Ind. Report)
Lawrence Berkeley National Laboratory
Date: 2021-05-26
A new study from Lawrence Berkeley National Laboratory (LBNL) finds standalone battery energy storage can potentially offer better value to the US electricity system than pairing batteries directly with solar or wind generation, but the pros and cons of each approach vary greatly from location to location and project to project. This is largely because siting the resources separately means the optimum location where batteries in particular offer most value to the electricity network can be chosen.

The report notes adding four hours of battery storage sized at half the nameplate capacity of a renewable power plant adds, on average, $10 per MWh of electricity market value across the service territories of the country's seven main independent ISOs. On the other hand, independently siting renewable power and battery storage can enable each to be located at the grid node where it offers most locational value, adding an estimated $12.5 per MWh of value.

In California, where 89 pct of large-scale solar waiting in network operator CAISO's interconnection queues is hybridised with storage. One of the factors is that interconnection to the grid is an expensive process which can take a lot of time, while available interconnection capacity is limited. Connecting generation and storage to the grid at the same point can therefore significantly lower the cost of a battery project. Another factor is that there is currently an investment tax credit (ITC) in the US which offers a reduction on the tax burden for building renewable energy projects and for batteries if paired with renewable energy. That can be worth as much as $10 per MWh.

The study notes that while the value of storage and renewables can go up if separate locations are chosen, the increase in value could be outweighed by the increase in costs. Different states also have different policies which could favor one or the other choice. The report also notes both separate and hybrid projects can be of benefit to the electricity system, the relative benefits vary from market to market and through a variety of other factors.

T here is a growing appetite for hybrid resources from renewable developers, the study notes. In the West of the US, around 70 pct to 90 pct of proposed new solar plants at the end of 2020 would be paired with energy storage, with a national average of about 34 pct of solar and 6 pct of wind project proposals including co-located batteries. (Source: LBNL. Website PR, May, 2021) Contact: LBNL, Laurel Kellner, Media, 510-590-8034,,

More Low-Carbon Energy News Lawrence Berkeley National Laboratory,  Battery,  Energy Stroeage,  Renewables+Storage ,  

CAISO Releases Energy Storage Enhancements (Report Attached)
California ISO
Date: 2021-04-30
Grid-scale storage resources are being rapidly deployed onto the California ISO (CAISO) grid to provide replacement capacity for retiring resources and to enable the integration of more renewable resources consistent with the statewide clean energy and climate goals. Energy storage complements intermittent variable energy resources by absorbing excess clean renewable energy and releasing that stored energy when needed to support and sustain grid reliability. Storage is also relied upon in several cases to help meet local capacity resource requirements and there are additional opportunities expected in the future.

Given the unique characteristics of energy storage resources compared to traditional energy generation or load resources, new market rules and changes to the ISO's existing energy storage optimization models may be needed to fully integrate these resources into the market, to leverage the flexibility of these resources to maintain grid reliability, and to maximize their use and effectiveness to achieve clean energy goals.

Download California ISO Energy Storage Enhancements HERE. (Source: California ISO, PR, 28 Apr., 2021) Contact: California ISO,

More Low-Carbon Energy News Energy Storage,  CAISO,  

$20Mn Battery Storage Project Slated for San Diego (Ind. Report)
EnerSmart, Eos Energy
Date: 2021-02-15
In the Golden State, San Diego-based renewable energy service provider EnerSmart is reporting a $20 million deal with New Jersey-based Eos Energy for more than 10 zinc-based battery storage facilities, seven of which will be in San Diego. These projects will store approximately 3 MW each and will each supply electric power to 2000 homes.

The electric powere stored in these batteries will go to the California Independent System Operator (CAISO). The California PUC seeks to add about 2,100 MW of energy storage to the grid by August 2021. . Currently, the peak demand for electricity is at 26,221 megawatts. (Source: EnerSmart, Website, NewsinPaphos, 14 Feb., 2021) Contact: EnerSmart, James beach, Partner,; Eos Energy,

More Low-Carbon Energy News EnerSmart,  Eos Energy,  Battery Energy Storage,  

Wartsila Delivering 70MW Calif. Energy Storage System (Ind. Report)
Date: 2020-05-01
Wartsila reports it is finalizing a 70MW energy storage and energy management system project in the California Independent System Operator (CAISO) energy market. The system will be paired with Wartsila's GEMS software platform to maximize system efficiencies and add renewable power to the grid as needed. The project is expected to be complete by mid-2020.

This project is Wartsila's largest energy storage deployment tied to a renewable resource in the western U.S. To date the company has deployed more than 70 energy storage systems worldwide. (Source: Wartsila, PR, April, 2020) Contact: Wartsila, Risto Paldanius, Energy Storage Bus. Dev.,

More Low-Carbon Energy News Wartsila,  Energy Storage,  

Barriers to Maximizing the Value of Behind-the-Meter Distributed Energy Resources -- California Solar & Storage Association White Paper Attached (Ind. Report)
California Independent System Operator
Date: 2019-02-06
"The California Public Utilities Commission (CPUC) and the California Independent System Operator (CAISO) have developed various programs that allow distributed energy resources (DERs) to compete with traditional generation, transmission, and distribution infrastructure to provide capacity and ancillary services.

"Customer-sited, or behind-the-meter (BTM), resources can provide multiple grid services at the distribution and transmission levels,1but numerous barriers have hindered the efforts of the CPUC and CAISO to enable BTM resources to provide these services. This report builds on several documents that industry stakeholders have produced for staff in the CPUC's Energy Division describing these barriers."

Download the Barriers to Maximizing the Value of Behind-the-Meter Distributed Energy Resources White Paper HERE. (Source: California Solar & Storage Association, Feb., 2019) Contact: California Solar & Storage Association,; California Independent System Operator,

More Low-Carbon Energy News California Independent System Operator ,  

Calif. Radox Flow Battery Energy Storage Pilot Underway (Ind. Report)
CASIO,New Energy and Industrial Technology Development Organisation
Date: 2019-01-07
The New Energy and Industrial Technology Development Organization (NEDO) -- Japan's largest public management organization promoting research and development as well as deployment of industrial, energy and environmental technologies -- and Sumitomo Electric Industries are reporting the second stage of a 2MW/8MWh stationary radox flow battery energy storage pilot in California is underway.

The pilot, which includes partnering with the California Independent System Operator (CAISO), is the first to connect a battery storage system in the US wholesale energy market.

The project follows an agreement signed between NEDO and the California state government's Office of Business and Economic Development to promote the use of energy storage in the state. Californian utilities are required under State law AB 2514 to complete the installation of storage battery capacity up to a certain proportion by 2024. (Source: NEDO, New Energy and Industrial Technology Development Organization, Jan., 2019) Contact: New Energy and Industrial Technology Development Organization,; Sumitomo Electric Industries,

More Low-Carbon Energy News CASIO,  Battery Energy Storage,  New Energy and Industrial Technology Development Organisation,  

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