About BESS Analytics

BESS Analytics is a Deep Delved Limited project for tracking utility-scale battery energy storage activity and revenue drivers in Great Britain. The dashboard combines public operational data, licensed market data, and derived read models to make asset activity easier to inspect and compare.

Scope: GB utility-scale battery storage activity and revenue analytics
Owner: Deep Delved Limited, founded in 2023
Data coverage: follows the available source feeds and dashboard data availability window
Audience: investors, operators, analysts, and stakeholders familiar with GB power markets
Purpose: transparent, methodical insight into BESS activity, revenue composition, and market context

Data sources

BMRS / Elexon (copyright and database right). Includes: balancing mechanism physical notifications, MEL/MIL, bid/offer levels and acceptances. See the Elexon data licence.
National Grid ESO Open Data. Includes ancillary services used by this site (dynamic frequency response (DFR), balancing reserve (BR), Quick Reserve, and Slow Reserve) from the Enduring Auction Capability (EAC) platform and its predecessors.
Market power prices. Obtained directly from EPEX market prices under the EPEX external use licence. Prices remain the property of their respective owners.

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Data methodology

Most operational and performance metrics are derived from contractual data. For frequency response and balancing mechanism activity, we read the relevant contractual feeds where available to measure volumes and revenues. For BMU assets participating in wholesale markets, physical notifications (PN) are visible but the optimiser’s deal prices are not public. We therefore estimate wholesale revenue by inferring likely execution prices from PN timing and size, the unit’s physical constraints, and other observable context.

Non-BMU assets have no wholesale-market visibility (whether contracted or imbalance/NIV-chasing). We continue to track their frequency response activity, but we exclude them from revenue leaderboards and indices. In aggregate, we expect these “unlit” strategies to broadly track trends seen for BMU assets (“lit” strategies) where visibility is higher.

Copyright and company dates are not data-coverage dates. Deep Delved Limited was founded in 2023; dashboard coverage depends on the source datasets, processing status, and read-model availability shown by the application.

Data validation

Outputs are periodically validated against audited or regulatory statements from owners and operators. Asset‑specific deep dives have also been performed with industry assistance. These exercises indicate that typical estimation accuracy is within a reasonable tolerance, with occasional outliers. As the market transitions further to wholesale‑led trading, forecast variance may widen to reflect greater estimation uncertainty.

Privacy policy

This site uses essential, temporary session cookies solely for functionality. If analytics are enabled, they are configured through the deployed environment rather than embedded in the project content. Your device’s IP address and select request headers may be logged by our hosting provider for reliability and security. We do not store or share personal data from these processes beyond routine traffic monitoring and service operation.

Terms and conditions of use

All right, title, and interest in this website—including the software, code, updates, text, content, fleet and pipeline registers, index levels, index composition, index construction methodology, asset and capacity market summaries, live balancing mechanism calculations, performance summaries, and derived data—are owned or controlled by Deep Delved Limited and may not be cited, reproduced, or used to generate further commercial content without express consent. Aspects of this website and its contents are protected by intellectual property laws (including copyright, trademark, trade dress, domain name, patent, and trade secret) and international treaties.

Nothing on this website grants, by implication or otherwise, any licence or right to use any content, trademarks, copyrights, or other proprietary materials without express written permission. Any rights not expressly granted are reserved. Presence of content on this website does not waive any rights thereto. You do not acquire ownership rights to any content viewed here. Use of the website signifies your agreement to abide by applicable intellectual property laws and any notices/restrictions on this website.

Disclaimer

Figures are compiled on a reasonable‑efforts basis for informational purposes only. They are subject to change and should not be relied upon for decision‑making without further verification. The owner and administrator accept no liability for inaccuracies, errors, or omissions, nor for actions taken based on the information provided. Users are encouraged to independently verify the figures before taking any action.