Battery energy storage · Renewable energy and clean technology
Battery storage projects costed over the life of the capacity they guarantee
A battery storage contract promises capacity and availability for years, from cells that lose capacity every year. We cost each system over its whole guarantee period, including the cells it will need to add, so the price agreed today covers the obligation it creates.
In one paragraph
Battery energy storage integrators, project developers and pack assemblers serve utilities, renewable developers and commercial and industrial users. For their founders and finance heads, the main input is imported cells priced in foreign currency. Contracts guarantee performance over a long period. The producer also carries obligations for the battery at the end of its life.
Founder or chief financial officer
The economics
How the money moves in this trade
A storage system is assembled from cells, modules, battery management systems, power conversion equipment and controls. Cells are the largest single cost and are mostly imported. Utility-scale projects are awarded on capacity-based payments over a contract term. Some are supported by government viability gap funding, released in tranches at financial closure, at commercial operation and after a period of operation. Commercial and industrial projects earn from savings on peak tariffs, demand charges or backup.
Cells degrade with use and age, so meeting a contracted capacity usually requires adding cells during the term, known as augmentation. Contracts carry penalties for missing availability or efficiency levels. Under the battery waste management rules, producers carry extended producer responsibility for collecting and recycling batteries they place on the market. Each of these is a cost that arrives years after the sale and is easy to leave out of the price.
The problem
Where the numbers usually break down
Cell cost and currency are fixed after the bid
Contracts are priced on a cell quotation that expires before the order is placed, and both the dollar price and the exchange rate land on the integrator's margin.
Augmentation is left out of the cost
The cells needed to keep capacity at the contracted level in later years are not costed or provided for, so early years show a margin later years will consume.
Performance penalties are not tracked
Availability and round-trip efficiency are monitored by the operations team, but the deductions they trigger are not estimated in the accounts until they are levied.
End-of-life obligations are not recognised
Registration and recycling obligations for batteries placed on the market are handled as a compliance task without a cost estimate attached to sales.
Grant milestones are tracked by the project team only
Viability gap funding and similar support depend on milestones and conditions that finance does not see, so the receivable and the risk of losing it are both unrecorded.
What we do
The work, and the result each part produces
Lifetime system costing
Cells, balance of system, integration, augmentation, maintenance and warranty costed over the full contract term for each project.
The contract price is tested against the whole obligation it creates.
Cell price and currency exposure
Signed contracts with cells not yet ordered listed against current prices and exchange rates.
Open exposure is known before the order is placed.
Degradation and augmentation provisioning
Expected capacity fade and augmentation cost tracked by system against actual performance data.
Future augmentation cost is recognised as the obligation builds.
Performance deduction estimates
Availability and efficiency against contracted levels, with the resulting deductions estimated monthly.
Penalties appear in the accounts before they appear on the invoice.
Producer responsibility register
Batteries placed on the market, recycling obligations and their estimated cost recorded by year.
End-of-life obligations carry a cost in the books.
Grant and milestone tracking
Funding conditions, milestones achieved and amounts receivable tracked for each supported project.
Grant receivables are recorded and their conditions kept in view.
Where we start
The first steps of an engagement
Contracts, cell quotes and data
We ask for signed storage contracts with their capacity, availability and efficiency terms, cell supplier quotations and orders, performance data from operating systems, and any funding agreement.
Lifetime cost test
Each signed contract is costed over its full term, including augmentation, maintenance and expected penalties, and compared with the contract value.
Exposure and obligation registers
Cells not yet ordered are listed against current prices and exchange rates. Batteries placed on the market are recorded with their recycling obligations.
Lifetime margin report
The first report shows lifetime cost against contract value by project, open cell and currency exposure, the augmentation provision needed, and grant milestones outstanding.
How it is measured
The reports the work is judged on
Each is recorded as a baseline before the work starts, so later reports have an honest comparison.
- Lifetime cost against contract value, by project
- Open cell and currency exposure
- Capacity against guaranteed level, by system
- Augmentation provision against plan
- Availability and efficiency deductions
- Grant milestones achieved and funds received
Who it suits
Written for, and not the right fit for
- You need a certification of battery safety or performance; that is issued by an accredited testing body.
- You need a statutory audit, or a certificate required under a funding scheme, on its own; those are signed by an independently engaged professional.
- Battery storage integrators and developers supplying utilities, renewable developers or commercial and industrial users.
- Battery pack assemblers moving into stationary storage.
- Early-stage firms preparing for their first utility-scale contract, a debt raise or an equity round.
Services
Services this work draws on
Costing and profitability
What each product, line and customer really contributes.
Explore service ↗MIS and financial planning
Reporting built around the questions you actually need answered.
Explore service ↗Fractional CFO services
Senior financial leadership on the days you need it, not a full-time hire.
Explore service ↗ESG and sustainability advisory
Sustainability data you can evidence before you commit to a target.
Explore service ↗Banking, funding and due diligence
Information a lender or investor can verify without a reconstruction.
Explore service ↗Every other service, also available in this trade
Common questions
Questions owners in this trade ask
Why provide for augmentation now when it happens years later?
Because the obligation is created when you sign the capacity guarantee. If the cost isn't recognised as the contract runs, the early years overstate margin and the later years carry a loss that was always coming.
How are battery recycling obligations tracked?
We track the batteries placed on the market, the obligations that follow and their cost, and keep the records your compliance filings need. Registration and filings are made by your team, and any audit of them is by an independently engaged professional.
We are an early-stage company. Is this too much finance for us?
Not if you're signing multi-year guarantees. A fractional CFO arrangement usually fits at this stage, with the lifetime costing model built before the first large contract is priced.
5th Quadrant performs costing, provisioning, reporting and compliance-record work. Statutory audit, certificates required under funding schemes, audits of producer-responsibility filings and accredited product certification are performed by independently engaged licensed professionals or accredited bodies, coordinated through 5th Quadrant. Full detail is on our Professional Scope page.
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