Survey day starts at the roof. Two technicians arrive, one structural-trained and one electrical-licensed, with a Solmetric Suneye 210 shading analyser, a Bosch GLM 50-27 CG laser distance meter, a Hilti PS 50 ferro-detector to find rebar before any rail anchor lands, a Fluke T6-1000 PRO clamp meter for live DB readings, a Fluke 1748 power-quality logger for a 7-day pre-install profile, and a Megger DET2/3 three-point earth tester. Six artefacts are produced the same day: a roof plan with module layout to centimetre precision, a shading horizon export per string zone, a structural certificate request package addressed to the original villa engineer of record, a DB sub-panel photo set with breaker labels, a ground impedance reading against the less-than-5-ohm target, and a generator pad scoping note. Where the original engineer of record is unreachable, a fresh structural assessment from AESG or Rider Levett Bucknall costs AED 6,000 to AED 12,000.
The design engineer drafts the single-line in AutoCAD Electrical, the string layout in PVsyst 7.4, the structural attachment detail in Tekla and the battery enclosure clearance plan against DCD Decree No. 49 of 2017 on lithium battery installations. DEWA r-EVS Stage 1 documents go through the e-Services portal under our Tier 1 contractor login. Submission packet: single-line with inverter ratings and string voltages, the contractor licence, the structural certificate, ECAS or G-Mark per item, IEC 62109-1 and IEC 62109-2 inverter compliance, and the smart meter spec sheet matching DEWA-approved bidirectional models. DCD review of the battery scope runs in parallel against UL 9540A test data. The compound NOC submission runs in parallel with DEWA Stage 1, not after it, on Emaar, Nakheel, Damac, Meraas, Sobha or Al Barari forms.
Procurement opens at contract signature. Tesla Powerwall 3 has a 12-week lead via Tesla Energy MENA. Span Smart Panel runs 8 weeks of air freight from Salt Lake City. SolarEdge inverters are 8 weeks via Mideast distribution. Wallbox Pulsar Max ships in 4 weeks from the Madrid stock pool. Modules wait until Stage 1 approval because the SKU may shift for the compound aesthetic. Install runs Saturday morning to Friday handover across weeks 8 to 15. K2 Systems CrossRail components stage on the driveway, a 9 metre articulated lift in the front drive, fall arrest tied to the parapet. SolarEdge HD-Wave SE10000H-RWS or SE17K mounts inside the utility room with 150 mm clearance. Span Smart Panel circuit migration runs one breaker at a time so the lights and AC keep working through the swap.
DEWA Stage 2 inspector visits week 16 on a pre-booked half-day window. Common punch-list items: missing earth bond labels at module frames, MC4 connector torque check, request to relabel the PV main switch in Arabic and English. Closure sits at 2 to 5 working days. Stage 3 is the net meter swap to a bidirectional Itron, Iskra or DEWA-approved smart export-capable unit. We run the IEC 62446-1 acceptance test with witness signatures, 1000V insulation per Megger MIT525, IV curve trace per string per Seaward Solar PV200, grounding continuity under 0.1 ohm, Powerwall first charge to 100 percent with cell-level voltage spread under 50 mV. Handover at week 18: SolarEdge portal, Tesla One app, MyWallbox app, Span app, Home Assistant single pane. 90 minute homeowner training. Day-30 return tune, two engineers, one full day, no charge.
