A proposed 40MW, 80MWh battery investment came with EUR28 million capital expenditure and an attractive annual revenue presentation. The paper combined EUR4.1 million from energy trading with EUR2.7 million from system services, producing EUR6.8 million. Each estimate had been prepared using assumptions suited to its own activity. I asked whether the same equipment could deliver both sets of results within one feasible operating schedule.
Engineering and commercial specialists reviewed the combined dispatch, power and energy limits, service requirements and degradation assumptions. The concern was not that multiple revenue streams were impossible. It was that separately attractive schedules might require the same capacity at incompatible times. Their joint assessment produced EUR4.9 million of modelled annual revenue under the revised assumptions, rather than the sum of the two standalone estimates.
The revised view included EUR1.2 million annual operating and market-access costs, leaving EUR3.7 million before financing, tax and the further lifecycle allowances still being developed. That amount was not labelled free cash flow or a completed investment return. The connection position, future replacement needs and sensitivity to market conditions required additional work. Finance's role was to make those incomplete parts visible without substituting for technical dispatch analysis.
The development team wanted to retain the timetable and argued that the project could still have a valuable role beside existing generation. The board agreed that the opportunity deserved further examination but withheld the full construction approval. It authorised EUR240,000 for dispatch and connection studies, with a defined return to the investment discussion. The studies were in progress at the point described; no operating revenue or completed asset is claimed.
We gave up an immediate commitment and accepted further development cost to obtain a more credible account. The EUR1.9 million reduction between models was not an actual revenue loss, and the unapproved EUR28 million was not a saving. The decision established what evidence the next capital request would need. One asset may earn several forms of value, but its board should see how the physical and commercial obligations fit together before adding the numbers.
I would have the operating team test compatibility between proposed battery revenue streams before finance consolidates them, preventing a detailed model from lending authority to mutually competing uses.