High Tech Solutions

Battery Testing — FAT & SAT

Battery storage accepted on evidence, not on a data sheet. We plan and witness factory and site acceptance tests and trace the energy chain from the factory cells to the grid point of connection — so guarantees are verified before they are signed off.

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What we do

  1. 01

    Test planning

    FAT and SAT plans written against the contract, the specification and the grid code.

  2. 02

    Test suites

    Capacity, efficiency, response and protection tests organised into a complete suite.

  3. 03

    Witnessing

    Independent witnessing at the factory and on site, on the owner’s side.

  4. 04

    Energy chain

    Usable energy traced from factory cells through conversion and transformation to the point of connection.

  5. 05

    Guarantee verification

    Capacity, efficiency and availability guarantees checked against measured results.

  6. 06

    Acceptance record

    Punch lists, non-conformances and a verified acceptance report.

From factory cells to the grid connection point

Cells & modules Racks PCS / inverter MV transformer HV transformer Breaker ~Point of connection Factory acceptance (FAT) Site acceptance & grid compliance (SAT) Usable energy traced and verified along the chain
Schematic — BESS energy chain and acceptance scope (illustrative)Swipe sideways to see the full schematic →

Typical deliverables

  1. 01FAT plan and procedures
  2. 02SAT and commissioning plan
  3. 03Complete test suite
  4. 04Witness reports
  5. 05Energy chain statement FAT → POI
  6. 06Guarantee verification report
  7. 07Acceptance and punch-list register

Method

  1. 01

    Contract

    Guarantees and test obligations read.

  2. 02

    Plan

    FAT and SAT plans written.

  3. 03

    Witness

    Tests witnessed at factory and site.

  4. 04

    Verify

    Results checked against guarantees.

  5. 05

    Accept

    Verified acceptance record issued.

Engagement roles

01 · On the owner’s side

Advisor

  • Review of test obligations and guarantees
  • Due diligence of BESS acceptance
  • Lender’s view of test results
02 · Engineering the scope

Technical Consultant

  • FAT / SAT plans and test suites
  • Owner’s witness at factory and site
  • Guarantee verification
03 · In it to the end

Technical Partner

  • Interface management BESS / PCS / substation
  • Commissioning support
  • Operations and capacity tracking

Computed on our platform

  • BESS test suites
  • Energy chain FAT → POI
  • BESS sizing
  • Degradation tracking
  • Spec check
  • Verified reports
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Other solutions
A Data Center & Energy CampusesData Center & AI Infrastructure →Hybrid, Off-grid & Behind-the-meter →
B Investment Decisions & SitingInvestment Decision & Portfolio Ranking →Site Selection for Developers →
C Generation TechnologiesRenewable Generation →Hydropower Technology →
D Storage, Grid & TransmissionEnergy Storage & Grid →Battery Testing — FAT & SATTransmission Line Monitoring →
E Testing, Verification & OperationsHard Test — New & Existing Plants →Generation Forecast & Operations →
F Urban, Infrastructure & CorridorsUrban Transformation & Settlement Design →City & Project Relocation →Border & Pipeline Corridor Monitoring →
G EPC Advisory & Digital EngineeringIndustrial & Infrastructure EPC Advisory →Digital Engineering & AI →
High Tech Solutions

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