Solar Calculator UAE 2026

Solar in the UAE: Cheap Power, Expensive Slabs

The UAE has some of the world's best solar conditions — a well-oriented rooftop array in Dubai yields around 4.7-4.8 kWh per kW per day, with almost no seasonal cloud risk. The economics, though, hinge entirely on which DEWA tariff slab you sit in. Residential electricity is billed progressively: 23 fils/kWh for the first 2,000 kWh a month, 28 fils to 4,000, 32 fils to 6,000, and 38 fils beyond — plus a fuel surcharge of roughly 6 fils and 5% VAT. An apartment in the 23-fil slab sees modest returns; a large villa running AC into the 32-38 fil slabs is where solar genuinely shines. Test both scenarios in the solar savings calculator.

How Shams Dubai Net Metering Works

Under DEWA's Shams Dubai program, your rooftop system connects to the grid and a bidirectional meter nets your exports against your imports in kWh. Surplus generation becomes credits that roll over to later bills, effectively offsetting consumption at your own tariff. Because it is a kWh-for-kWh offset rather than a cash buyback, oversizing far beyond annual usage earns nothing extra — size to your consumption using the system size calculator.

• Work only with a DEWA-enrolled contractor and consultant — this is mandatory.
• The contractor handles design approval, a no-objection certificate, inspection and meter installation.
• Villa owners in freehold communities usually also need developer or community NOC approval.

Worked Example: 10 kWp Villa in Dubai

A 10 kWp system at roughly AED 4 per watt costs about AED 40,000 installed. At 4.7 kWh/kW/day it produces near 17,200 kWh a year. For a villa whose marginal consumption sits in the 32-38 fil slabs (call it AED 0.38 including fuel surcharge), that is roughly AED 6,500 of annual offset — a payback near 6-7 years. A low-consumption home offsetting at 29 fils would wait 7+ years. Daytime AC is the dominant load here, so the solar AC calculator is worth a look, and dust soiling makes the output calculator assumptions matter — plan for regular panel cleaning or expect 5-15% losses.

Outside Dubai: Different Rules

Shams Dubai applies only to DEWA customers. Abu Dhabi operates under separate ADDC/EWEC arrangements and Estidama sustainability requirements for new builds, while Sharjah (SEWA) and the northern emirates have more limited distributed-solar frameworks. Batteries are rarely economic given grid reliability, but off-grid majlis or farm setups can price storage with the battery bank calculator.

Caveats

Fuel surcharges move with fuel costs, slab thresholds and program terms can change, and credit rollover rules have specifics worth reading. Verify current requirements directly with DEWA (dewa.gov.ae) before contracting, and get at least three quotes — installed prices in the UAE vary widely for identical hardware.

Solar calculators for other countries

Localized subsidy and tariff math for more markets:

Frequently asked questions

No. Exports become kWh credits on your DEWA account that roll over and offset later consumption. There is no cash payout, which is why systems should be sized to your annual usage rather than oversized.

Usually only marginally. If most of your consumption falls in the 23-28 fil slabs, payback stretches well past 8-9 years — and most apartments cannot install rooftop systems anyway. Large villas in the 32-38 fil slabs see the strongest returns.

No. Shams Dubai requires a DEWA-enrolled contractor to design, install and commission the system, and DEWA inspects it before connection. Freehold villa owners typically also need a community or developer NOC.

Uncleaned panels commonly lose 5-15% of production, and more after major dust events. Most villa owners schedule monthly or quarterly cleaning; factor this cost and loss into any payback estimate.

About 14 kWh a day or 5,190 kWh a year on average, from about 12.7 a day in December to 15.0 a day in September, according to PVGIS data for panels at the best fixed angle. Shading, dust and orientation change the result.