Dubai requires DEWA Shams Dubai program approval for every grid-tied solar installation in the emirate. The program — launched in March 2015 and now governed by Connection Conditions Version 4 (June 2022) — uses a 4-stage process: NOC, design approval, installation, and inspection/connection. As of June 2025, 725 MW of solar capacity is connected across 8,430 buildings in Dubai, with 1,700+ new connection requests processed through the Hab Reeh digital platform in 2024 alone — a 30% year-on-year increase. Version 4 reduced the maximum system size from 2.08 MW to 1 MW per plot and formally confirmed the ban on ground-mounted installations that has been in effect since May 2020. Every contractor, equipment choice, and design document must meet DEWA’s published standards before a single panel goes on a rooftop.
Most Common Rejection Cause: Equipment Not on the DEWA Approved List
The single most common reason DEWA rejects design submissions is equipment — panels or inverters — that do not appear on DEWA’s approved list via the Hab Reeh platform. Contractors who order equipment before checking the list, or who substitute a “similar” model mid-project because the approved unit is out of stock, face design rejection and full resubmission. Check every panel model and every inverter against the Hab Reeh equipment list at dewa.gov.ae before ordering. If a model is delisted between ordering and submission, you will need a replacement unit on the current list.
How Shams Dubai Net Metering Works
Shams Dubai uses net metering, not a feed-in tariff. The distinction matters: under a feed-in tariff, the utility pays a separate rate for every unit exported. Under net metering, exported units are credited against the customer’s consumption on the same bill, at the customer’s own applicable tariff slab rate. DEWA does not pay cash for surplus generation.
DEWA Residential Tariff Slabs (2024–2025)
| Monthly Consumption | Energy Charge | Fuel Surcharge | Total (fils/kWh) |
|---|---|---|---|
| 0–2,000 kWh | 23 fils | +6 fils | 29 fils/kWh |
| 2,001–4,000 kWh | 28 fils | +6 fils | 34 fils/kWh |
| 4,001–6,000 kWh | 32 fils | +6 fils | 38 fils/kWh |
| Above 6,000 kWh | 38 fils | +6 fils | 44 fils/kWh |
Commercial and industrial customers pay a flat rate of 38 fils plus 6 fils fuel surcharge, giving an all-in rate of approximately AED 0.44/kWh.
The Slab-Stacking Benefit
The tiered residential tariff creates a compounding savings mechanism that flat-rate commercial customers do not see. A residential customer consuming 5,000 kWh/month before solar would pay for 3,000 kWh at 28 fils and 1,000 kWh at 32 fils (above the first 2,000 kWh at 23 fils). If a solar system reduces net consumption from the grid to 2,200 kWh, almost all remaining consumption falls into the lowest two slabs. The solar system’s financial benefit is not just the units displaced — it is the units displaced multiplied by the higher-slab rate those units would otherwise attract.
For a practical example: a Dubai villa consuming 4,500 kWh/month across slabs 1–3 that installs a 15 kWp system generating ~2,000 kWh/month net reduces its grid draw to approximately 2,500 kWh. At that level, consumption sits mostly in slab 1 (23 fils) and the lower end of slab 2 (28 fils), compared to the original mix of slab 1, 2, and 3. The effective savings per kWh displaced is higher than the average flat rate — because each solar kWh eliminates a unit from the highest-consumption slab first.
Credits Never Expire
Accumulated Shams Dubai net metering credits roll over indefinitely. There is no annual reset, no expiry window, and no point at which DEWA cancels unused credits. For customers who generate large surpluses in winter (lower air conditioning demand, lower grid consumption), credits accumulate and are drawn down through summer cooling months. This makes annual financial modelling — rather than month-by-month — the correct approach for Shams Dubai systems.
No Cash for Surplus Credits
Credits that accumulate on a Shams Dubai account cannot be converted to cash, transferred to another account, or paid out at contract end. Systems should be sized to match expected annual consumption, not to maximise exports. Oversizing for export generates credits that sit permanently on the account — they reduce future bills but do not produce revenue. Use solar design software that models annual consumption vs generation to confirm the system is not oversized for the site’s load profile.
System Size Limits and Eligibility
The 1 MW Cap and TCL Rule
Version 4 (June 2022) sets the absolute maximum system size at 1 MW per plot. Before this revision, the limit was 2.08 MW. Beyond the absolute cap, the system must not exceed the applicable share of Total Connected Load (TCL) as defined in Section 2.2 of the Connection Conditions. In practice this means DEWA will check the ratio of proposed system output to the site’s contracted load during design review — a commercial building with 500 kW contracted load will face a lower effective ceiling than the 1 MW hard cap.
Typical residential systems in Dubai range from 5–20 kWp. Systems above 400 kW incur additional grid integration infrastructure costs. Systems above 1 MW require an MV connection with interface switches on both LV and MV sides — a substantially higher civil and electrical cost that makes the vast majority of Shams Dubai projects fall well below this threshold.
No Ground-Mounted Systems
Ground-mounted solar installations have been prohibited under Shams Dubai since May 2020. Version 4 formally codified this ban. Eligible installation types are:
- Rooftop (flat roof or pitched roof)
- Building facades and cladding
- Existing structures (car park canopies, pergolas, shade structures already in place)
Systems proposed as ground-mounted arrays, including those on undeveloped land within a plot, will be rejected at the NOC stage.
DEWA Contractor Categories
Every Shams Dubai application must be submitted by a DEWA-accredited consultant or contractor. DEWA classifies approved contractors into three categories based on the system capacity they are authorised to handle:
| Category | System Capacity Range | Typical Application |
|---|---|---|
| Category A | Up to 50 kW | Residential villas, small commercial premises |
| Category B | 50 kW – 150 kW | Mid-size commercial buildings, warehouses |
| Category C | Above 150 kW | Large commercial, industrial, hospitality |
Using a contractor whose category does not cover the proposed system size results in rejection. As of 2025, 111 certified companies hold active DEWA accreditation. DEWA publishes the current approved list on its website — verify accreditation status before engaging any contractor, as certificates expire and must be renewed.
The 4-Stage Shams Dubai Application Process
The Shams Dubai application is sequential. No stage can be completed before the previous stage is approved. Attempting to begin installation before receiving design approval, or energising before DEWA inspection, creates both regulatory and liability exposure.
Stage 1 — NOC Application (Approx. 2–3 Weeks)
The DEWA-accredited consultant or contractor submits the PV connection application form via the DEWA e-services portal. Supporting documents required at this stage: completed application form, site layout plan, preliminary system design overview, equipment datasheets for panels and inverter (both must be on the DEWA approved list), and the contractor’s current DEWA accreditation certificate. DEWA reviews the submission and issues the No Objection Certificate (NOC). The NOC is permission to proceed to design stage — it is not permission to install. Do not procure equipment or begin detailed engineering before the NOC is in hand.
Stage 2 — Design Approval (Approx. 1–3 Weeks)
After the NOC, the contractor submits the complete technical design package to DEWA for design approval. This package includes: single-line diagram (SLD), string layout plan, inverter sizing calculations demonstrating compliance with the TCL limits in Section 2.2 of the Connection Conditions, protection relay specification (IEC 60255 compliant), surge arrestor placement plan, earthing design per DEWA DRRG standards, and test certificates for all equipment. DEWA reviews the design and may request revisions — respond to revision requests within the specified timeframe to avoid the application being held. Design approval is issued in writing and specifies the installation period within which work must begin.
Stage 3 — Installation (3–7 Days for Residential, Longer for Commercial)
With design approval received, the Category A/B/C contractor proceeds with installation. The system must be installed exactly as specified in the approved design. Any deviation from the approved SLD, equipment substitution, or change in string configuration requires resubmission to DEWA before proceeding — installing a deviation and hoping it passes inspection is a common mistake that causes failed inspections and partial dismantlement. Residential installations typically take 3–7 working days. Commercial systems above 150 kW routinely take 2–6 weeks depending on roof access, structural work, and inverter delivery lead times.
Stage 4 — Inspection and Connection (Approx. 1–2 Weeks)
After installation is complete, the contractor notifies DEWA via the e-services portal to request a connection inspection. DEWA engineers visit the site and verify: installed equipment matches the approved design, all IEC protection standards are met, earthing and surge protection are correctly installed, inverter anti-islanding function is active, and isolation switches are correctly labelled and accessible. On passing inspection, DEWA installs a bidirectional smart meter, issues the Connection Agreement, and energises the system for grid export. Do not activate grid export before the Connection Agreement is signed — unauthorised grid export violates the supply agreement.
Realistic End-to-End Timeline
| Stage | Duration | Cumulative |
|---|---|---|
| NOC application and approval | 2–3 weeks | Week 3 |
| Design approval (no revisions) | 1–2 weeks | Week 5 |
| Design approval (with one revision cycle) | 2–3 additional weeks | Week 7–8 |
| Installation (residential) | 3–7 days | Week 8–9 |
| Inspection scheduling and visit | 1–2 weeks | Week 9–11 |
| DEWA meter installation and energisation | 3–7 days | Week 10–12 |
A smooth residential application with no revision requests typically completes in 6–10 weeks. Commercial systems should be planned on a 10–14 week timeline, with additional buffer if the project is above 400 kW or involves transformer-level infrastructure.
Required Documents Checklist
| Document | Who Prepares It | When Needed |
|---|---|---|
| PV connection application form | Contractor (via DEWA e-services portal) | Stage 1 — NOC application |
| Site plan / layout drawing | Consultant or contractor | Stage 1 — NOC application |
| Contractor DEWA accreditation certificate | Contractor (renew if expired) | Stage 1 — NOC application |
| Panel datasheet (IEC 61215 + IEC 61730 certs) | Equipment supplier | Stage 1 — NOC application |
| Inverter datasheet (IEC 62109-1/-2 + IEC 62116 certs) | Equipment supplier | Stage 1 — NOC application |
| Single-line diagram (SLD) | Consultant/engineer | Stage 2 — Design approval |
| String layout plan | Consultant/engineer | Stage 2 — Design approval |
| Inverter sizing and TCL compliance calculations | Consultant/engineer | Stage 2 — Design approval |
| Protection relay specification (IEC 60255) | Consultant/engineer | Stage 2 — Design approval |
| Protection relay type test + routine test certificates | Relay manufacturer | Stage 2 — Design approval |
| Surge arrestor placement plan | Consultant/engineer | Stage 2 — Design approval |
| Earthing design (DEWA DRRG standard) | Consultant/engineer | Stage 2 — Design approval |
| Installation completion notification | Contractor | Stage 4 — Inspection request |
| As-built drawings (if deviations from design) | Contractor | Stage 4 — before inspection |
Pro Tip: Prepare Stage 2 Documents Before NOC Is Issued
There is no regulatory reason to wait for the Stage 1 NOC before beginning Stage 2 document preparation. Contractors who start the single-line diagram and protection relay specification in parallel with the NOC application save 2–3 weeks on the overall project timeline. The only risk is if DEWA NOC comes back with conditions that affect the design — uncommon for standard rooftop systems. For complex commercial projects with high system capacity, confirm the TCL headroom with DEWA before investing heavily in detailed design.
Technical Requirements: Inverters, Panels, and Protection
IEC Standards Required
| Component | Certification Required | What It Covers |
|---|---|---|
| Solar panels | IEC 61215 | Design qualification and type approval for crystalline silicon modules |
| Solar panels | IEC 61730 | Safety qualification — construction, electrical, and fire safety |
| Inverters | IEC 62109-1 | Safety requirements for power conversion equipment — general |
| Inverters | IEC 62109-2 | Safety requirements specific to inverters |
| Inverters | IEC 62116 | Anti-islanding test procedure and performance requirements |
| Protection relays | IEC 60255 | Measuring relays and protection equipment standards |
All equipment must not only hold these certifications — it must appear on DEWA’s approved equipment list accessible via the Hab Reeh platform. The Hab Reeh list hosts 150+ approved PV components and is updated periodically. A model that was on the list when a project was designed may be delisted before the design submission — check the list at submission time, not just at procurement.
Protection Requirements by System Size
DEWA’s protection requirements scale with system size. Larger systems that inject more power into the distribution network require more robust isolation and protection infrastructure:
| System Size | Protection Requirement |
|---|---|
| 10–100 kW | External protection devices at point of interconnection with isolation switches; may be integral to inverter if inverter provides this function |
| Above 100 kW | Dedicated protection switchgear plus transformer backups |
| Above 400 kW | Additional grid integration equipment required; costs vary by site |
| Above 1 MW | MV connection required; interface switches on both LV and MV sides; not permitted under Shams Dubai (exceeds 1 MW cap) |
For systems in the 10–100 kW range, the isolation function may be provided by the inverter itself if the inverter’s datasheet confirms it meets DEWA’s isolation switch requirements — confirm this with the inverter manufacturer before omitting a separate external device.
Earthing and Surge Protection
Earthing must comply with DEWA’s Distribution Reliability and Resilience Guidelines (DRRG). Surge arrestors are mandatory on all Shams Dubai systems regardless of size. The earthing design — including earth electrode type, spacing, and connection to the inverter enclosure — must be documented in the design package submitted at Stage 2.
Inverter enclosure ratings:
- Outdoor installation: IP65 minimum
- Indoor installation: IP54 minimum
Installations that place outdoor-rated inverters inside buildings, or indoor-rated inverters in exposed outdoor locations, fail inspection. Confirm the inverter’s IP rating matches its planned installation environment before finalising the equipment list.
The Hab Reeh Platform
Hab Reeh is DEWA’s self-assessment digital platform, launched January 2021. Contractors and consultants use it to:
- Check whether a specific panel model or inverter is on the DEWA approved list
- Run a preliminary self-assessment of the proposed system before submitting the NOC application
- Access DEWA’s guides and technical documents for Shams Dubai
The platform is accessible through the DEWA e-services portal. Running a Hab Reeh self-assessment before submitting the NOC catches equipment eligibility issues that would otherwise generate rejection at the NOC or design approval stage. Make it standard practice on every project.
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DEWA Version 4: What Changed in June 2022
DEWA Connection Conditions Version 4, issued June 2022, made three material changes that affect every Shams Dubai project designed after that date.
1. Maximum System Size Reduced: 2.08 MW → 1 MW
The absolute per-plot capacity limit was cut from 2.08 MW to 1 MW. This change affects large commercial and industrial projects. Designs that were scoped to the previous 2.08 MW limit require redesign to fit within 1 MW. For the vast majority of Dubai projects — residential and small-to-mid commercial — this change has no practical effect, as those systems sit well below 1 MW.
2. Ground-Mounted Ban Formally Codified
The prohibition on ground-mounted solar installations, which DEWA had been applying operationally since May 2020, was formally written into Version 4. This closes any ambiguity: ground-mounted PV is not eligible for Shams Dubai regardless of plot type or location. Rooftop, facade, and structure-integrated (carport, pergola) installations remain eligible.
3. Pre-2022 Systems Grandfathered
Systems that received connection approval under Version 3 or earlier and were already connected to the DEWA grid before June 2022 are grandfathered under the conditions of their original approval. They are not required to retrofit to Version 4 standards. Systems that were in progress — NOC issued but installation not complete — were required to confirm compliance with Version 4 before proceeding to installation.
Version 5 Anticipated
DEWA periodically revises its Connection Conditions as the Shams Dubai program matures. Always download the current version from the DEWA e-services portal at the start of a project rather than relying on a cached copy. Design submissions that reference a superseded version number in the documentation can trigger clarification requests that delay design approval.
Common Reasons DEWA Rejects Solar Applications
| Issue | Cause | Fix |
|---|---|---|
| Equipment not on DEWA approved list | Panel or inverter model not listed on Hab Reeh | Check Hab Reeh before ordering; re-specify with a listed model if rejected |
| Contractor category mismatch | Category A contractor submitting for a 120 kW system (requires Category B minimum) | Engage the correct category contractor; re-submit under their accreditation |
| System exceeds TCL headroom | Proposed capacity exceeds Section 2.2 allowance relative to contracted load | Downsize the system to comply with the TCL calculation; confirm headroom with DEWA pre-NOC |
| Ground-mounted design submitted | Plot has open land and designer proposed ground mount | Redesign for rooftop or structure-integrated installation |
| Missing protection relay test certificates | IEC 60255 type test or routine test certificates not included | Request certificates from relay manufacturer; include both type test and routine test |
| Earthing design non-compliant | DRRG earthing requirements not followed | Review DEWA DRRG standard and revise earthing design; may require site re-survey |
| Inverter IP rating mismatch | Outdoor inverter has IP54 rating instead of required IP65 | Replace with IP65-rated model or move to indoor location meeting IP54 conditions |
| Design deviation installed without resubmission | String layout changed on site without updating design package | As-built drawings must match approved design; submit revision for any change before inspection |
| Expired contractor accreditation | Contractor’s DEWA certificate lapsed between engagement and submission | Contractor must renew accreditation before re-submitting; verify certificate expiry at engagement |
Related UAE Solar Compliance Guides
Use solar design software that produces IEC-compliant single-line diagrams and generation reports accepted by DEWA’s design review team. For the full UAE solar regulatory picture, visit the UAE solar compliance hub.
Frequently Asked Questions
Can a Shams Dubai system use a mix of panels from different manufacturers on the same inverter string? DEWA’s approved equipment list applies per model, not per manufacturer. Mixing panel models from different manufacturers on the same string is a design choice that DEWA’s review team will assess for compatibility — specifically whether the mixed string produces voltage and current within the inverter’s specified input range. Strings mixing approved panel models may be accepted, but the design package must include detailed string calculations demonstrating compatibility. Using a single panel model across the entire array is simpler and reduces design review risk.
Is battery storage permitted under Shams Dubai? Battery storage paired with a grid-tied solar system falls under separate DEWA guidelines beyond the core Shams Dubai Connection Conditions. DEWA has been developing battery storage connection standards as part of its smart grid roadmap. For any project incorporating battery storage alongside the PV array, confirm the current DEWA battery storage requirements with a DEWA-accredited consultant before committing to a battery specification — the regulatory position for battery-plus-solar grid connection in Dubai has evolved independently of the Shams Dubai solar-only approval process.
What is the DEWA connection fee for Shams Dubai? DEWA charges a connection fee of approximately AED 1,500 for standard Shams Dubai systems. Systems above 400 kW incur additional grid integration infrastructure costs that vary by site — these can be significant for large commercial projects that require transformer upgrades or MV-level connection work. Confirm the expected connection cost with DEWA’s network planning team for any system above 400 kW before finalising the project financial model.
Can a landlord install solar under Shams Dubai and pass credits to tenants? Net metering credits under Shams Dubai are applied to the DEWA account linked to the connection point. If the landlord holds the DEWA account for common areas and the tenant holds a separate DEWA account for the tenancy, the credits accrue only to the landlord’s account. There is no mechanism within the standard Shams Dubai framework for splitting or transferring credits between separate DEWA accounts. Commercial landlords building solar for tenant benefit typically do so through a service charge or PPA arrangement with the tenant rather than through direct credit transfer.
Does the Shams Dubai approval expire if I do not start installation within a certain period? Yes. DEWA design approval is issued for a defined installation period. If installation does not begin or the project lapses, the approval expires and the application must be resubmitted. DEWA’s specific approval validity period is stated in the design approval letter — review it when the letter is received and plan the installation timeline to fit within the window. Resubmission after expiry is treated as a new application and goes back through the full 4-stage process.
How does Shams Dubai handle system expansions after initial connection? Expanding an existing Shams Dubai-connected system — adding panels to an existing array — requires submitting a new application for the additional capacity. The expansion is treated as a modification to the connected system and must go through the full 4-stage process for the incremental capacity. The existing system continues operating during the expansion approval process. Document the as-built configuration of the existing system accurately before submitting the expansion application — design consistency between the original approval, the as-built state, and the expansion design is verified during the expansion design review.
