Solar Battery Payback Calculator UAE — Does Storage Pay Under Shams Dubai?
A battery pays for itself on arbitrage — you store a unit worth little and spend it when a unit is worth a lot. That gap is what Pakistan and Saudi Arabia have and Dubai does not. DEWA’s Shams Dubai FAQ is explicit that surplus energy "will be credited and used to off-set future consumption of electricity", so an exported unit and an imported unit are worth the same thing.
Run the calculator with DEWA’s own numbers and it says so: the daily saving is zero and there is no payback period. That is not a broken result, it is the answer. The case for storage in Dubai is backup and self-reliance, and it should be argued on those terms rather than dressed up as a bill saving.
Every field below is editable, and every default carries its source and date on the field itself — the defaults are a starting point, not a claim about your bill. We sell no hardware and take no installer commission; see how we verify.
5 fields on this page ship blank, on purpose
No source we can cite publishes these figures for UAE, so the fields start empty rather than pre-filled with something plausible. The calculator prints no result until you supply your own.
- Units per month per installed kW — No UAE authority publishes a per-kW monthly yield. DEWA publishes irradiation, not output — "about 2100 kWh/m2 for Dubai" a year at the optimal south-facing 24° tilt — and its own FAQ tells you to ask your provider "how much your new system will produce on an annual basis". Put that contractor figure in here, divided by 12 and by the system kW. Everything below stays blank until you do.
- Installed cost per kW — low (AED) — UAE rooftop solar is sold by quotation. The only figure DEWA publishes is dated by DEWA itself — "(Q2 2021) typical system costs are in the 4,500-5,000 D/kWp range for small ‘villa-size’ systems" — and a five-year-old band is not a 2026 default. Type the per-kW figure from your own quote.
- Installed cost per kW — high (AED) — Same reason as the low figure: quote-only market, no current published band.
- Price of one panel (AED) — No verified public AED price exists for a Tier-1 550W-plus module — that segment is sold by distributors who publish nothing. Consumer retail publishes smaller panels; check /ae/prices/solar-panels for the dated rows we do have and type the price from your own quote.
- Usable kWh per panel per day — Follows from the yield figure above, which no UAE authority publishes. Ask your DEWA-enrolled contractor for the annual production estimate on the exact panel you are quoted, and divide by 365.
Storing instead of exporting saves ≈ AED 0/day (AED 0/month).
Battery cost AED 4,810 → no payback from arbitrage at these rates. When an exported unit is credited at the same rate an imported one costs, shifting it into a battery saves nothing; the case for storage here is backup and self-reliance, not the bill. Dubai is net metering, not net billing. DEWA’s Shams Dubai FAQ: surplus "will be exported to DEWA distribution network through a Net Metering scheme, this surplus energy will be credited and used to off-set future consumption of electricity", and "the producer shall not be paid any money for the excess electricity". Credits offset kWh, never cash — and the set-off is limited by Executive Council Resolution 46 of 2014, so a system far larger than your own consumption banks credit you may never use.
How this calculator works — the actual arithmetic
- Daily saving = battery kWh × 0.8 usable × (your import tariff − the export credit). The 0.8 is a depth-of-discharge assumption and is not editable.
- In Dubai those two rates are the same. DEWA’s Shams Dubai FAQ states surplus "will be credited and used to off-set future consumption of electricity", so the bracket is zero and so is the arbitrage saving.
- Payback = battery cost ÷ (daily saving × 365) — and where the daily saving is zero, the page says there is no payback instead of printing an infinity.
- The battery rate default is one retailer’s dated listing (AED 2,888 for 6 kWh, August 2026). Check the UAE battery survey before planning around it.
Worked example — a 10 kWh battery in Dubai at DEWA’s published rates
Every figure below is what the calculator prints for its own defaults.
| Battery size | 10 kWh |
|---|---|
| Battery cost | AED 481/kWh (FSolar Energy 6 kWh at AED 2,888, August 2026 — one seller) |
| Your tariff | AED 0.29/kWh (DEWA slab 1 + fuel surcharge) |
| Export credit | AED 0.29/kWh — credited 1:1 against future consumption |
| Daily saving from storing instead of exporting | AED 0 |
|---|---|
| Battery cost | AED 4,810 |
| Payback from arbitrage | None at these rates |
Where these numbers come from
The battery rate is a single retailer’s dated listing, not a market price: the UAE index has no second seller on that item, and one seller is not a market. Check our UAE battery survey for what is actually in the index before you plan around AED 481/kWh.
The 1:1 export credit is DEWA’s published rule, not an assumption we made. If DEWA ever introduces a buy-back rate below the import tariff, change the export field and this page starts producing a real payback number.
Sources for this market’s defaults
- DEWA — Slab Tariff (residential 0.230/0.280/0.320/0.380 AED per kWh; fuel surcharge 0.060 AED/kWh, August 2026) accessed 2026-08-05
- DEWA — Shams Dubai FAQ (net metering credit; no cash for surplus; 2100 kWh/m2 irradiation; Q2 2021 cost band) accessed 2026-08-05
- UAE Fuel Price Committee — August 2026 pump prices (Special 95 AED 3.49/litre, effective 1 August 2026) accessed 2026-08-05
What this calculator does not know
- It prices energy, not resilience. A battery that carries a villa through an outage has a value this calculator cannot see and does not claim to.
- The 80% depth-of-discharge assumption is baked in and is not editable. Real usable capacity depends on the chemistry and the BMS.
- Credits are not cash. DEWA "shall not be paid any money for the excess electricity" cuts both ways: a credit you never consume is worth nothing, so a very large array plus a very large battery can both be over-investments.
Frequently asked
Is a solar battery worth it in Dubai?
Not on bill arbitrage. DEWA credits surplus energy against future consumption rather than buying it at a lower rate, so a unit stored and a unit exported are worth the same. The case for storage in Dubai is backup and self-reliance, and it should be argued on those terms.
Does DEWA pay for surplus solar electricity?
No. DEWA’s Shams Dubai FAQ states that the producer shall not be paid any money for the excess electricity; the surplus is credited and used to offset future consumption instead.
How much does a solar battery cost in the UAE?
The one verified public listing our survey has is FSolar Energy’s 6 kWh 51.2V LiFePO4 at AED 2,888 (August 2026), which works out at about AED 481 per kWh. That is a single retailer with no second seller in the index — one seller is not a market price.
Guides that explain the numbers
Products this applies to
Every AED row we have, with the date it was observed.
UAE battery prices (dated survey)Inverters sold in the UAERun these next
What a Shams Dubai system is worth a month, split between the units you use and the units you bank as credit.
Solar system size calculatorTurn your DEWA units into a kW figure and a battery size. The generation field is yours to fill — DEWA publishes irradiation, not output.