# Design IQ for Solar + BESS

> Catch design errors in solar and storage sets before they reach the field. Run your checklists across drawings, studies and datasheets at every design stage. Every finding is cited to the page.

Who it is for: Owners and IPPs reviewing EPC deliverables; Owner's engineers; Developers at 30 / 60 / 90 / IFC; EPC QA/QC teams.

## The errors that matter live between the sheets.

A utility-scale package is hundreds of sheets plus studies, calcs and datasheets. The expensive mistakes sit in the gaps: a string length that breaks the inverter's voltage window at record cold, a breaker on the single-line that doesn't match the schedule, a fault level in the study that the switchgear can't interrupt.

Reviewers find them by cross-referencing by hand, under schedule pressure, at every design stage. Design IQ does the cross-referencing, so your engineers spend their time on judgment.

## Example checks

### PV electrical

- String length vs inverter MPPT and max DC voltage at site record low temperature
- Conductor ampacity and derating vs overcurrent protection
- Combiner, inverter and transformer ratings match the single-line and datasheets
- Module, inverter and DC/AC ratio consistent across sheets

### Battery storage

- Enclosure spacing and separation vs NFPA 855 and the fire plan
- PCS and MV transformer ratings match the single-line
- Auxiliary and HVAC loads carried into aux transformer sizing
- Detection, suppression and deflagration venting called out

### Substation + interconnection

- Short-circuit study fault levels vs equipment interrupting ratings
- Grounding study results reflected in the grid design
- POI voltage, MW and MVAR consistent with the interconnection agreement
- Protection scheme and relay settings referenced

### Civil + structural

- Pile embedment and foundations vs geotechnical recommendations
- Grading and drainage vs the stormwater plan
- Access road and fire lane widths vs AHJ requirements
- Racking loads vs site wind and snow criteria

## Example finding (illustrative)

**Fail: MV breakers are rated for the available fault current.** The 34.5 kV main breaker is rated 25 kA interrupting (E-001), but the short-circuit study reports 31.4 kA available at the collector bus (Table 4). Raise the breaker rating or confirm the study basis. Cites: E-001 Single-line, p. 3; Short-circuit study, p. 18.

## How a review runs

1. **Upload the set.** Drag in drawings, studies, specs and datasheets. The agent indexes every page.
2. **Pick a checklist.** Use your own, imported from a file, or start from a Design IQ checklist.
3. **Check the findings.** Review each finding against its highlighted page, accept or override it, and export the comment log to Excel.

## FAQ

### Which design stages does it fit?

All of them. Teams run it at 30, 60 and 90 percent and IFC, and on acquisitions to diligence a data room. Re-run the same checklist on each revision and compare.

### Do we have to use your checklists?

No. Most teams import their own from PDF, Excel or Word. Design IQ checklists for PV, BESS, substation and civil are there if you want a starting point.

### Can it read the studies, not just the drawings?

Yes. Load flow, short-circuit, grounding, arc flash and geotechnical reports, calcs and equipment datasheets are all searchable, and checks can compare a value in a study against the drawing that should match it.

## Contact

- Book a demo: https://cal.com/lexfardella/intro
- Email: lex@designiq.app
- Start free: https://www.designiq.app/sign-up
- LinkedIn: https://www.linkedin.com/company/design-i-q/
- Location: Fort Lauderdale, FL