01
Fast route
Professional Check
Five audit decisions, one gross-to-net bridge and a demanding claim-classification assessment.
- Five focused lessons
- 10 scored questions
- Answer rationales after submission
About 15 minutes
Vitreous Learning 04
Professional BESS course · Great Britain
Turn a headline number into an evidence bridge
Define the claim, map the asset, reconcile visible cashflows and expose missing costs, double counting and false comparability.
2 learning routes80% pass standard30 assessment questions
Choose your route
Evidence ledElexonNESODESNZTechnical cut-off · 24 August 2026
One subject · two depths
Choose your route
This course is for analysts, investors and project teams who need to decide what a public £ per MW claim actually measures.
02
Full route · recommended
Detailed Course
From claim anatomy and asset identity through market-line reconstruction, cost boundaries, benchmarks and a published audit conclusion.
- Nine detailed modules
- Ravenscourt worked case
- 20 scored questions
75 to 90 minutes
Scores and progress remain on this device. No account or sign-up is required.
Professional Check · About 15 minutes
Can you tell an observed result from an attractive estimate?
Define scope, period, denominator and evidence before accepting a public BESS revenue number.
Lesson 1 of 5
Freeze the claim
Copy the exact words, value, period, denominator, currency and publication date before calculating anything.
Revenue, gross margin, net revenue, EBITDA and asset cashflow describe different boundaries. Record whether the claim covers one asset, a portfolio, an operating fleet or a perfect-foresight model.
Normalize only after preserving the original. A £/MW/year figure still needs the MW denominator, availability treatment and reporting period.
Hostile check
Rewriting an imprecise headline into a precise metric can make the analyst's version more defensible than the source claim.
Lesson 2 of 5
Prove the asset and period
Map the public name to the legal owner, project, BM Unit, capacity and operating dates.
Use company records, planning evidence, connection data, BM Unit mapping and Capacity Market entries as separate identity checks. Record commissioning and outage periods when they affect the denominator.
A portfolio headline cannot be assigned to one asset without an allocation method. A future award cannot be treated as current operating revenue.
Hostile check
A matching place name is weak identity evidence when several phases, SPVs or BM Units share the site.
Lesson 3 of 5
Classify every line
Keep observed cashflows, calculated values, inferred values and private unknowns separate.
Published BM acceptances can support a calculated BM cashflow component. Service results can evidence awards under their terms. Capacity Market registers evidence agreements. Wholesale trading and route-to-market transfers are often incomplete in public data.
Assign each line a source, formula, confidence and scope. Do not allow a modelled line to inherit the certainty of an observed line beside it.
Hostile check
A total containing one observed component remains partly estimated when the other components are modelled.
Lesson 4 of 5
Test overlap and missing costs
A revenue stack fails when the same physical action or price exposure appears twice.
Check whether a BM value model already embeds wholesale rebalancing, whether service utilisation overlaps BM settlement, and whether a benchmark includes perfect foresight. Then bridge gross receipts to the claimed net boundary.
Material deductions can include charging energy, fees, imbalance, network charges, auxiliaries, degradation, availability deductions and operating costs.
Hostile check
Subtracting only optimiser fees from gross receipts does not establish net asset revenue.
Lesson 5 of 5
Publish a bounded conclusion
State what is supported, what is estimated, what remains private and which result would change under another boundary.
Use a conclusion such as: public evidence supports at least £X of identified gross receipts for the period; total asset revenue and profit remain unverified because wholesale trades, contract transfers and costs are private.
Include an evidence ladder and sensitivity range. This is more useful than forcing a single false-precision number.
Hostile check
A caveat buried after a precise headline rarely repairs the certainty conveyed by the headline.
Primary and standards sources used in this course
Professional Check assessment
Answer every question before submitting. Correct answers and rationales appear only after the complete attempt.
Professional CheckQuestion 1 of 10
Detailed Course · 75 to 90 minutes
Audit the number without pretending to audit the company
Build a transparent bridge from public evidence to a bounded conclusion, with every private element left visible as unknown.
Module 1 of 9
Dissect the claim sentence
Every public number contains a metric, asset set, period, denominator and implied evidence standard.
Highlight each element and list what is missing. Record whether annualisation uses actual operating days or a full calendar year. Preserve nominal or real currency treatment and VAT where relevant.
Separate performance statements from promotional language. The audit tests the metric as published.
Hostile check
A number described as annual revenue can be a run-rate extrapolation from a short volatile period.
Module 2 of 9
Build an evidence ladder
Give primary transaction and register evidence more weight than unattributed charts or repeated press claims.
Use a hierarchy: official settlement or award data, filed company or regulatory records, direct project documents, reproducible calculations, then secondary commentary. Save source dates and archived copies where practical.
Independent repetition does not improve evidence when every article traces back to the same press release.
Hostile check
Three websites repeating one unsupported number still represent one unsupported source.
Module 3 of 9
Resolve identity and capacity
Revenue normalization depends on the exact asset boundary and capacity that was available during the period.
Map project name, SPV, BM Unit, connection capacity, commissioned phase and any co-located generation. Use the capacity consistent with the claim, then test alternative denominators.
For a 50 MW project operating for six months, £2 million of receipts can be reported as £40,000/MW for the observed period or annualised to £80,000/MW/year. The latter adds an extrapolation assumption.
Receipts£2.0m
Capacity50 MW
Annualised run-rate£80k/MW/year
Hostile check
Annualising a partial year across an outage or changing market regime can mislead even when the arithmetic is correct.
Module 4 of 9
Reconstruct wholesale and imbalance value
Public prices can show opportunity sets, while the complete executed trade book is normally private.
Avoid presenting perfect-foresight arbitrage as achieved revenue. If modelling, declare bid-ask treatment, gate timing, efficiency, power and energy limits, degradation and forecast availability.
Imbalance exposure can be intentional, incidental or portfolio-managed. Public imbalance prices alone do not identify the site's contracted position.
Hostile check
Multiplying public price spreads by maximum cycling assumes perfect execution and ignores uncertainty and market impact.
Module 5 of 9
Reconstruct BM cashflow
Use accepted volumes and the applicable settlement treatment, then keep the underlying energy position outside the public result unless evidenced.
Validate BM Unit mapping, FPN, BOALF integration, price pair and flags. Deduplicate revisions and preserve settlement lineage. Sum signed components at the correct period boundary.
Report BM receipts or payments as a line in the bridge. Economic margin remains dependent on stored-energy value, wholesale position and costs.
Hostile check
A positive accepted offer receipt can coexist with an economic loss after energy replacement and contract transfers.
Module 6 of 9
Audit services and Capacity Market
An award evidences contractual opportunity. Delivery, availability and deductions determine realised cashflow.
Map service awards to the asset and period. Distinguish availability and utilisation. Check performance deductions, tender version and settlement status. For Capacity Market, use agreement capacity and delivery year rather than nameplate capacity.
A future agreement is not current-year revenue. An awarded price multiplied by headline MW can overstate payment when de-rating applies.
Hostile check
Combining award values with separately modelled utilisation can count the same service economics twice.
Module 7 of 9
Build the gross-to-net bridge
Name every deduction and mark unknown private values rather than setting them to zero.
Start with identified gross market receipts. Deduct charging energy and related rebalancing, market and optimiser fees, imbalance, network and metering charges where applicable, auxiliary energy, performance deductions and operating costs.
Degradation can be modelled as an economic cost or future augmentation requirement. Keep the chosen treatment consistent.
Hostile check
Zero is a value. Using zero for unavailable cost data embeds an optimistic assumption.
Module 8 of 9
Test comparability and benchmarks
Align scope, period, denominator, evidence class, cost treatment and asset eligibility before comparing £/MW/year figures.
Separate achieved cashflow, modelled opportunity and perfect-foresight upper bounds. Check duration, location, connection, service qualification and commissioning date.
Use ranges or cohorts where asset differences are material. A single league table can conceal more than it reveals.
Hostile check
A common unit does not repair different definitions or selection bias.
Module 9 of 9
Ravenscourt worked audit
The audit succeeds when its conclusion is narrower and more defensible than the headline.
Ravenscourt is presented as earning £92,000/MW/year on 50 MW, implying £4.6 million. Public evidence supports £1.4 million of BM receipts and £0.6 million of service awards. A model supplies £2.6 million of wholesale value.
The wholesale model overlaps the energy effects of BM actions by an estimated £0.4 million. Identified costs are £0.7 million, while route-to-market transfers and imbalance remain private. The defensible public bridge supports £3.5 million before unknown private items, equal to £70,000/MW/year on the stated denominator.
Headline£4.6m
Supported bridge£3.5m
Bounded rate£70k/MW/year
Hostile check
The £70,000 figure is still a bounded estimate. It should not be relabelled audited net revenue while private items remain unresolved.
Primary and standards sources used in this course
Detailed Course assessment
Answer every question before submitting. Correct answers and rationales appear only after the complete attempt.
Detailed CourseQuestion 1 of 20