Asset Health Check
One operating site, a defined method and a fixed fee: performance reconciled against a rebuilt expectation, faults located to string and inverter level, O&M and warranty position tested, and every finding priced in yield and in money.
- Measured output against a rebuilt expectation from real weather data
- String and inverter-level analysis to locate where the yield is going
- Degradation against warranty, and inverter fleet position
- O&M contract performance against the SLA
Portfolio Review
Every asset in the fleet measured on the same basis, ranked by the gap between what it should produce and what it does, with a capex model that puts every fix in payback order and a repowering case where one exists.
- Every site measured on the same basis
- A league table of performance in kWh and in money
- A capex model ranking every remediation by payback
- A repowering case for the assets that justify one
Due diligence
Before money changes hands, we establish whether the asset is what it is represented to be, whether it will produce what the model says, and which of its problems will actually cost money, to the deal timetable.
- Design and build reviewed against the represented specification
- Yield assessment assumptions tested, P50/P90 basis checked
- Equipment bankability and obsolescence exposure
- EPC, O&M, warranty and grid agreements reviewed technically
Owner's Engineer
The engineer on the owner's side of an EPC contract: we specify what should be built, run the tender so bids are comparable, negotiate the technical terms, monitor construction and witness the tests, so that what is handed over is what was paid for.
- Feasibility, load matching and grid connection strategy
- Technical specification and employer's requirements
- Tender management and normalised bid evaluation
- EPC and O&M technical terms: tests, guarantees, liquidated damages
Contract review
Solar contracts are technical documents in legal clothing. We read the clauses counsel reads past, such as how the performance ratio is tested and what the O&M scope excludes, and tell the client and their solicitor what each will do in practice.
- EPC performance tests, guarantees and liquidated damages
- O&M and asset management scopes, SLAs and exclusions
- PPAs, leases and grid agreements: the technical obligations
- Module, inverter and battery warranties against likely claims
Expert witness
When a solar or battery system has gone wrong and the parties disagree about why, we investigate, analyse the data and write a report that a court, arbitrator or adjudicator can rely on, starting with an early view on the strength of the claim.
- Preliminary technical view on the strength of a claim
- Site inspection before evidence is disturbed
- Data analysis of underperformance, defects and delay
- Reports to CPR Part 35 and the Scottish equivalents
The Asset Health Check is priced by capacity band. Every other service is scoped and quoted in writing before work starts, excluding expenses and site visits unless stated. Apex is not currently VAT registered, so no VAT is added.
How an engagement runs
No open-ended day rates on defined work, and no report the reader cannot act on.
- A short callTo establish the question, the timetable and whether we are the right adviser. No charge.
- A written scope and feeWhat we will examine, what you will receive, when, and what it costs. Agreed before anything starts.
- The workData, drawings, models, contracts and, where the question needs it, a site visit.
- A report built for the decisionFindings that change the number first, quantified, with the completeness evidence behind them.
- A call to go through itIncluded. Questions from the committee, the lender or counsel are answered in writing.
Technologies and markets
Solar PV from C&I rooftops to utility-scale ground mount, battery energy storage standalone or co-located, and hybrid sites combining solar, wind and storage on one grid connection. The size of the asset changes the scope of the work, not the rigour.
The practice works across the UK, Ireland and the EU. We have reviewed or engineered assets in the UK, Denmark, Jordan, Japan, Egypt, Australia, Canada, Italy and Portugal, so a portfolio that crosses grid codes and standards regimes is not an obstacle.
Single buildings, homes and small commercial roofs are served by our residential site.
Tell us what you are trying to decide
Most engagements start with a short call about the asset, the transaction or the dispute, and the timetable. We will tell you what we would do, what it would cost, and whether you need us at all.