BESS · Solární Panely.CZ
How we assess battery storage
Our decision framework connects engineering, economics, safety, service and project requirements. Every conclusion needs evidence and a defined scope.
Operating experience changes the questions before purchase
Supply, commissioning and subsequent service work expose the difference between a catalogue parameter and the behaviour of an entire system. Nameplate kWh alone are not enough. Available power, control constraints, maintenance requirements and responsibility for downtime matter too.
We incorporate these lessons into our assessment method. The developing BESS-CPRAF framework connects energy and cyber-physical impacts. We use RLHS as an internal critical review of recommendations: looking not only for supporting evidence, but for circumstances in which the preferred option would stop working.
A document review is not a physical test
| Label | What it establishes | What it does not establish |
|---|---|---|
| Manufacturer statement | A parameter in a traceable, versioned document. | Independent measurement or system-wide performance. |
| Document review | A check of scope, exclusions, consistency and gaps. | A physical equipment test. |
| Modelled scenario | A calculation with explicit inputs and sensitivity. | A guarantee of future savings. |
| Our measurement | A recorded result for a defined configuration and conditions. | Identical performance across an entire brand. |
| Operating experience | An event documented at an individual installation. | A population-wide failure rate. |
| Unverified | Missing evidence or a test not yet performed. | Automatic proof of a defect or non-compliance. |
Five areas evaluated together
- Engineering: power and usable energy for the required duty, efficiency, auxiliary consumption, temperatures and BMS/control compatibility.
- Economics: investment, operation, degradation, maintenance, financing and uncertain revenue. A no-battery baseline is included.
- Safety: protection, fault conditions, remote access, identities, updates and configuration recovery.
- Service: warranty scope, spare parts, transport, labour and contractually assigned responsibility.
- Project requirements: product documentation, grid connection, fire strategy and applicable legal obligations.
RLHS: what could overturn our recommendation?
We challenge each preferred option with adverse scenarios. What if energy price spreads narrow, a cloud connection fails, or a supplier cannot provide a spare? If auxiliary consumption and degradation eliminate the saving, a high marketing score cannot restore it.
Critical safety and evidence gaps are conditions for proceeding, not weaknesses that a low price can offset. Factory and site acceptance tests are agreed for an individual project. Describing FAT/SAT in this method does not mean we have already performed them on every discussed product.
Scope and commercial interests are explicit
We do not claim a ranking of “30 tested brands”. A manufacturer count is meaningful only when supported by dated records and a stated depth of assessment. We do not claim accredited certification of this method or of battery systems.
We may also offer supply or integration of a recommended system. We disclose that role; the customer should understand alternatives, assumptions and selection reasons. The method does not replace authorised design, statutory inspections, fire engineering or legal advice.
See the shape of a deliverable
The sample shows how findings, evidence and conditions are recorded. It is not a product test or a customer case study.
Applying the method to public procurement
A risk must be connected to a proportionate requirement and verifiable evidence. Missing information is not proof of illegality. We separate technical review from legal remedies and disclose our commercial role.
From a risk to an enforceable requirement
Our project workflow links the asset and operating consequence to evidence, a proportionate measure, its procurement role and the acceptance method. We distinguish legal requirements, recommended controls and optional quality benefits. Each recommendation records its source date, uncertainty and responsible reviewer.
Advice before investment
Agree the assessment before choosing equipment.
This is a paid advisory service. Scope, fee, delivery date, named specialists and exclusions are agreed in a written proposal before work begins. Sending an enquiry is not an order or an obligation to purchase equipment.