Battery business case: a guide for businesses
Direct answer
The business case for a battery is the sum of the benefits you stack with storage, minus the costs over its lifetime. In the Netherlands you build it by combining several value streams: using more of your own generation, shaving peaks, exploiting price differences and delivering flexibility to the grid. Rarely does one stream carry the investment alone.
- Clear definition
- Data-driven assessment
- Risks and opportunities visible
- Practical next steps
Battery business case: scattered information versus Energy Intelligence
More and more Dutch businesses are considering a battery, often because expansion is blocked by grid congestion, or because solar panels deliver power when consumption is low. The question then is: does such a battery pay for itself? Picture a manufacturer with a full roof of panels and heavy machines that peak. The business case turns on which benefits you can stack and whether together they outweigh the costs over the entire lifetime.
- A battery earns in several ways at once: using more of your own solar power, lowering grid peaks, arbitrage on price differences and balancing or congestion services.
- Against those benefits stand the investment, degradation over the lifetime, the connection and ongoing management; those costs decide whether the return adds up.
- You need a solid consumption and generation profile, your connection capacity and usually a market party or aggregator to actually capture the benefits.
Insight
Traditional approach
Information is scattered across portals, documents, invoices or separate spreadsheets.
Modern approach
Data, context and interpretation are brought together into a clear decision picture.
Decision-making
Traditional approach
Choices are made based on averages, assumptions or occasional analyses.
Modern approach
Scenarios, KPIs and current measurement data make the trade-off more concrete and repeatable.
Follow-up
Traditional approach
Actions often stay non-committal or disappear into separate reports.
Modern approach
Follow-up actions, monitoring and reporting are linked to the same energy data.
Which value streams can you stack?
A battery rarely earns from one thing. You stack benefits. You can use more of your own solar power by storing the daytime surplus and using it in the evening. You can flatten peaks, known as peak shaving: by drawing from the battery during busy moments you lower your contracted capacity and therefore your grid costs. You can do arbitrage: charge when power is cheap and discharge when it is expensive. You can deliver balancing and congestion services to the grid operator and to TenneT. And you can postpone or avoid an expensive upgrade of your connection. It is the combination of these streams that carries the business case.
- Use more of your own generation: store the solar surplus and use it later.
- Peak shaving: flatten peaks, lowering contracted capacity and grid costs.
- Arbitrage: charge at low prices, discharge at high prices.
- Flexibility services: balancing for TenneT and helping resolve congestion for the grid operator.
- Avoiding a connection upgrade because the battery absorbs the peak.
What is on the cost side?
Against the benefits stand costs you carry over the entire lifetime. The largest item is the investment in the battery itself and its installation. A battery wears out: charging and discharging slowly reduce the usable capacity, which is called degradation. Your design and use determine how fast that happens, and therefore how long the battery lasts. In addition, a connection or adjustment may be needed, which in a congestion area costs time and money. Also allow for management: monitoring, maintenance, insurance and the safety requirements from the Dutch PGS 37-1 guideline. Do not forget the surroundings: your municipality may set conditions on siting, such as distance to homes or planting.
- Investment: purchase and installation of the battery.
- Degradation: usable capacity falls with use, which sets the lifetime.
- Connection: possibly new or adjusted, often with a waiting time in a congestion area.
- Management: monitoring, maintenance, insurance and safety under PGS 37-1.
- Permit and siting: your municipality may set additional conditions.
What do you need and where are the pitfalls?
Start with your own data. Map your consumption and generation profile per quarter hour, plus your connection capacity and expected changes such as new machines or charging points. An energy adviser can make that analysis. For the market benefits you usually need a market party or aggregator, because TenneT's balancing markets have minimum bid sizes that only large businesses reach alone. Watch the pitfalls. Do not double count benefits: you cannot use the same capacity for peak shaving and arbitrage at the same moment. Market prices fluctuate, so future arbitrage income is uncertain. And do not charge at unfavourable moments, because a battery that charges during the peak actually worsens grid congestion.
- Consumption and generation profile per quarter hour plus your connection capacity.
- Usually a market party or aggregator to capture the market benefits.
- Do not double count benefits: the same capacity cannot serve two goals at once.
- Price risk: expected arbitrage income is uncertain because prices fluctuate.
- Charging during the peak worsens grid congestion instead of easing it.
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