Power Supply from renewable generation offers the lowest levelized cost of energy in the energy industry. For a sustainable and reliable future of energy supply the increased demand with less carbon impact must be achieved. To overcome the volatility and less unpredictability of renewable power generation energy storage is the key technology to be added to the energy infrastructure. A long duration CellCube Solution with its capability to not only cover power requirements but deliver signaficantly long duration energy storage for up to 24 hours, is therefor the perfect solution to be co-located to large scale renewables via a ppa-model or optimisation phase of solar or wind farms.


Use Case:

Large Scale PPA’s

Even though large scale solar & wind farms offer lowest LCoE they are in tight PPA regimes which require overbuilt and still include operational risks. A co-located long duration storage from CellCube offers flexibility that unlocks additional revenue streams and reduces potential curtailments.

 

Customer Challenge

Most renewable PPA's are based on a low kWh price contract incl. performance guarantees. Due to dependencies on weather and limited time of use per day the included risk portion is very high or limits the potential use cases for revenues. This leads either to an uncompetitive price or to a high operational risks over the project duration of typically 15 years.
 

CellCube Solution

  • 2-4 hour storage for wind farms incl. firming, energy shifting or anxiliary services

  • 2 - 10 hour storage for solar farms incl. energy shifting, peak demand supply or anxiliary services

  • Centralized PCS concepts to reduce CAPEX

Benefits

  • Energy cost savings

  • Higher IRR of the total system

  • Profit from a flexible backbone to reach your contracted terms. The CellCube can operate as both power source and sink and is therefore the perfect component in your infrastructure, especially if unpredictable renewable energy sources come into play. Those can be a major risk for PPA´s without a reliable long-duration CellCube buffer.


Use Case:

Integration of Renewables

When deploying renewable generation the technical requirements for grid connection and energy schedules become more and more a challenge. A co-located long duration storage from CellCube ensures not only to meet the technical connection requirements (TCR) but enhances  the dispatching strategy for multipurpose use.

 

Customer Challenge

The intermittency and volatility of renewable generation has multiple impacts

  • Forces operators to overbuilt the large scale plant

  • Grid curtailments apply and revenue losses happen

  • Grid Connection requirements get more demanding and investments are needed

  • Participation in capacity markets is less predictable

CellCube Solution

  • 2 - 10 hour storage for energy shifting, peak demand supply, energy management, enablement for microgrids, anxiliary services

  • Centralized PCS concept to allow for AC or DC connected renewables

Benefits

  • Energy cost savings

  • Higher IRR of the total system

  • Grid provider and everyone who installed a renewable energy source knows the problem of unpredictable events that are leading into stressed grids or underpowered demands. CellCube, with its overrating capability without loss of lifetime, levels all parameters for a smooth and stable integration into both existing or new infrastructures.

References / Projects

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Use Case:

Renewable Baseload

The must run rate policies of TSO's prefer currently conventional generation as infeed from renewable generation is less predictable. A co-located long duration storage from CellCube enables the solar and wind farm to offer baseload generation and to be not curtailed.

 

Customer Challenge

Mid-Term and short-term planning of baseload capacity on plant level and based on large scale renewables is currently not feasible.

CellCube Solution

  • Deploying large scale energy storage with more than 500MWh and with long duration of 4-12 hours

Benefits

Expand capacity on each site’s fixed interconnection power limit. Increase value by enabling time-shifting, capacity firming, and enhanced grid integration. By charging excess e.g. wind power during night when the demand is low and discharging charged energy during day time when the demand is high.