A Proposal for
Hydroluminum Ltd
Battery Energy Storage System (BESS)
Background
Hydroluminum is developing a power generation setup based on a hydrogen combustion engine, with the requirement to pair this with a 0.5–1 MW battery energy storage system. The intent is to source a reliable, cost-effective containerised BESS solution suitable for integration with the hydrogen genset and deployment in the UK.
Containerised BESS units at this scale are now mature commodity products from established Chinese manufacturers, offered as integrated 20ft or 40ft systems with battery modules, BMS, PCS, EMS, fire suppression, HVAC, and SCADA included. The supplier base is deep, with a wide range of pricing and quality positions across the market.
The work for Hydroluminum on this engagement is two-fold: identifying the right supplier from a wide market, and verifying that the chosen system will perform reliably, comply with UK installation requirements, and integrate cleanly with the hydrogen genset. We have structured this proposal accordingly.
Indicative Scope
Based on the discussion to date, the target system is understood to be in the following range. Final specifications will be confirmed during Stage 1.
| Parameter | Indicative Specification |
|---|---|
| Rated Power Output | 0.5–1 MW |
| Energy Capacity | 1–4 MWh (subject to discharge duration requirement) |
| Battery Chemistry | LFP (lithium iron phosphate) |
| Form Factor | Containerised, 20ft or 40ft ISO, all-in-one integrated |
| Integrated Subsystems | Battery modules, BMS, PCS, EMS, fire suppression, HVAC, SCADA |
| Input Source | Hydrogen combustion engine (genset output) |
| Deployment | United Kingdom |
Key Risk Areas & Focus Points
A 1 MW BESS deployment is a capital asset with multi-year operational implications. Selecting the wrong supplier or specification at this stage carries downstream cost, time, and compliance risk that is significantly larger than the cost of doing the sourcing properly. Our engagement is structured around three risk areas in particular:
Many Chinese BESS containers carry CE marking on the battery cells but not on the full integrated system, and the inverter / power conversion system (PCS) supplied may not be type-tested to the UK G99 standard required for grid-connected installation. Without G99 type-test certification on the PCS, a system cannot legally connect to the UK distribution network, and insurance and warranties may be invalidated.
Our focus: certification verification at the document level for every shortlisted supplier, covering full-system CE, IEC 62619 battery safety, PCS G99 type-test certification, and integrated fire suppression compliance. Suppliers without verifiable, current certificates will not progress to the shortlist.
Standard containerised BESS units are built for AC grid connection or DC-coupled solar input. They are not built off the shelf for hydrogen combustion genset input. The interface between the genset output and the BESS input requires confirmation: AC-coupled with rectification, DC-coupled with conditioning, ramp rate compatibility, harmonic profile tolerance, and control protocol alignment.
Our focus: direct engineering-to-engineering conversations with each shortlisted supplier’s technical team to confirm hydrogen genset compatibility, document the recommended interface configuration, and surface any additional conversion equipment required before purchase rather than after.
Headline performance figures on supplier listings (cycle life, calendar life, warranty period) are commercially attractive but often loosely supported. The gap between a supplier’s marketing claim and what they will actually warrant in a binding contract is where most BESS procurement projects encounter problems. The reality of the production line, cell origin, BMS robustness, and after-sales support is not visible from a quotation.
Our focus: an onsite audit at the chosen supplier ahead of order placement, conducted by our Head of R&D. This is the same approach that caught the voltage non-conformance on the recent Deionised Water System pre-shipment inspection. For a 1 MW BESS, this verification step is the single most important quality safeguard in the engagement.
Work Breakdown
The engagement is structured in two stages. Each stage has defined deliverables, payment is tied to delivery, and the client retains the option to pause between stages if circumstances change.
STAGE 1 — Sourcing & Technical Validation
| Activity | Detail |
|---|---|
| Market Research | Wide supplier landscape review across verified Chinese BESS manufacturers. Filter to manufacturers with proven international export track record and verifiable certifications. |
| Supplier Shortlist | 3–5 shortlisted manufacturers, each verified against project requirements. Supplier capability assessment, factory background, export experience, and reference projects. |
| Certification Verification | Document-level verification for each shortlisted supplier:
|
| Hydrogen Genset Interface Check | Engineering-to-engineering technical clarification with each shortlisted supplier. Confirmation of input topology, control protocol, and any additional interface equipment required. |
| Quotation Pack | Full quotation from each shortlisted supplier covering FOB price, MOQ, lead time, payment terms, warranty, and after-sales support. |
| Logistics & Compliance Assessment | Dangerous goods handling (UN38.3) and state of charge requirements at loading. HS code classification and indicative freight to UK port. Documentation pack required for UK import. |
| Stage 1 Output | Structured sourcing report with shortlisted suppliers, full quotation comparison, certification position, hydrogen genset interface recommendation, logistics summary, and a clear recommendation on the preferred supplier for Stage 2. |
| Duration | Approximately 4 weeks from confirmation |
| Fee | $3,000 USD |
STAGE 2 — Onsite Supplier Audit
| Activity | Detail |
|---|---|
| Onsite Factory Audit | One full day onsite at the chosen supplier’s manufacturing facility. Conducted by Sourya Ghosh, Head of R&D, supported by C2W audit team where required. |
| Audit Coverage |
|
| Audit Output | Structured audit report including findings, risk assessment, recommended QC plan for the production order, and a final go / no-go recommendation. |
| Duration | Approximately 2 weeks from Stage 1 sign-off to report delivery |
| Fee | $1,500 USD |
Commercial Summary
| Stage | Fee | Payment Trigger |
|---|---|---|
| Stage 1 — Sourcing & Technical Validation | $3,000 USD | Payable on project confirmation |
| Stage 2 — Onsite Supplier Audit | $1,500 USD | Payable on completion of Stage 1 sourcing report |
| Total Engagement Fee | $4,500 USD | 100% Stage 1, 100% Stage 2 upfront |
Exclusions
The fees cover all sourcing, supplier engagement, certification verification, audit work, reporting, and coordination. The following are excluded from the engagement fee and would be quoted or arranged separately when relevant:
Why C2W
Next Steps
This proposal is non-binding at this stage and intended to give you clarity on cost, structure, and the specific risks we will be managing on your behalf. If you would like to proceed, we can begin Stage 1 immediately on confirmation.
Best regards,
Mark Jacobs
CEO, C2W Group / Shield Works
June 2026