Investment in Distributed Solar - A case for Abu Dhabi, UAE

Investment in Distributed Solar: A case for Abu Dhabi, UAE

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Solar panels in Abu Dhabi now make electricity more cheaply than the power grid does. For most homes and businesses, the panels pay for themselves within a few years through lower bills. If more people used solar, the government could spend far less on the subsidy that keeps electricity cheap, saving up to around 1.5 billion dirhams a year by 2030 and cutting a large amount of pollution.

Key Takeaways

  • Solar makes electricity for about 12 fils a unit. Running the grid costs about 39 fils a unit, worked out from the Department of Energy’s price documents and TAQA’s 2023 accounts, so solar is much cheaper to produce.
  • How fast the panels pay for themselves depends on your electricity bill today. For most households that pay the normal rate, it takes roughly three to three and a half years. For businesses, about four to five years.
  • Households that already get the biggest government help pay so little for electricity that solar takes far longer to pay back, up to about twenty years.
  • The strongest of the three growth paths, 30 percent a year, could cut the government subsidy by around 1.5 billion dirhams a year by 2030 and avoid about 5 million tonnes of carbon dioxide a year, while covering only about a tenth of demand.
  • Very little solar is installed today, held back mainly by the cheap subsidised electricity, a habit of building only large solar farms, and rules that are still being worked out.

How much is the Middle East investing in clean energy?

Not much yet, but that is set to change. Across the Middle East, only about 20 cents goes into clean energy for every dollar spent on oil and gas. The International Energy Agency, the body that tracks global energy, expects clean-energy spending in the region to roughly double by 2030 as countries act on their climate promises. The United Arab Emirates has promised to reach net zero by 2050 and plans to invest more than 163 billion United States dollars in clean energy along the way.

Figure 1: Past and future energy investment in the Middle East, in billions of United States dollars, under two scenarios (Announced Pledges and Net Zero Emissions).

Past and future energy investment in the Middle East (USD billion)

2016–2020

2021–2023

2024 (est.)

2026–2030 APS

2026–2030 NZE

Fossil fuel supply Fossil fuel power Low-emissions power Grids, storage and clean supply End-use

Source: International Energy Agency, World Energy Investment 2024.

What it shows: past and forecast energy investment in the Middle East to 2030 under the Announced Pledges and Net Zero Emissions scenarios. Key takeaway: clean-energy spending roughly doubles by 2030 under announced pledges and rises almost six times under net zero, so the money is coming either way.

Why does cheap electricity slow solar down in Abu Dhabi?

Because the government pays part of everyone’s electricity bill, so the price people see is far below what the power really costs, and that leaves little reason to switch to solar. Solar is cheap to run, about 12 fils a unit. But a household getting the most help already pays only 7 fils, and a farm pays 5. When your electricity is that cheap, putting solar on your roof barely lowers your bill, even though solar itself is a bargain.

Behind the scenes, the real cost of grid electricity is much higher than the price people pay. MCC Economics estimates the true cost at 36 to 41 fils a unit, worked out from official price documents published by the Abu Dhabi Department of Energy and the 2023 accounts of the emirate’s main electricity company, TAQA. The government covers the gap. Redirecting some of that subsidy money into solar or efficiency would help the government, households and the environment at the same time.

“A better use of subsidy monies would be to invest directly in energy efficiency or distributed solar – potentially a win-win-win for government-consumers-environment.” MCC Economics, Investment in Distributed Solar report.

Figure 2: Stylised breakdown of the economic cost of electricity and the tariff, not to scale, as in the source diagram.

Stylised breakdown of the economic cost of electricity and the tariff (not to scale)

Money out: average economic cost
Money in

Proportions are illustrative, as in the source diagram; hover or tap any block for what it covers.

What it shows: a stylised split of the real cost of electricity into generation, transmission and distribution, with the average tariff sitting below it. Key takeaway: the gap between real cost and tariff is the subsidy, and everything in this report flows from the size of that gap.

Figure 3: Residential electricity prices across the Gulf, in United States cents per kilowatt-hour, by consumer group and monthly consumption band.

Residential electricity prices across the Gulf (U.S. cents/kWh), by consumer group and monthly consumption band

Every consumer group runs through the same eleven monthly consumption bands, from 1–1,000 kWh up to above 10,000 kWh; darker bars follow the source’s darker shading. Hover on desktop or tap a bar on mobile for details.

Source: Abuzaid, Al Moeilak and Alzaatreh (2022), Energy Strategy Reviews.

What it shows: residential electricity tariffs across the Gulf countries against the world average. Key takeaway: most Gulf tariffs sit far below the world average, which is why solar that beats the grid on cost can still struggle to beat the bill.

Table 1: Abu Dhabi electricity, what each consumer group pays and the subsidy that fills the gap up to the real cost of about 0.39 dirhams a unit.

Customer group What they pay (dirhams a unit) Subsidy that fills the gap (dirhams a unit)
Households on the discount rate 0.07 0.32
Households on the standard rate 0.27 0.12
Shops and offices 0.20 0.19
Industry 0.29 0.10
Government users 0.29 0.09
Farms 0.05 0.34

Source: MCC analysis of the distribution company’s 2024 tariffs, the Department of Energy price documents and the generation company’s 2023 accounts.

Figure 4: The economic cost of electricity against what each Abu Dhabi consumer group pays and the subsidy that fills the gap, in dirhams per unit.

Abu Dhabi electricity: what each group pays, the subsidy filling the gap, and the real cost (dirhams per unit)

Average economic cost
Real cost of electricity 0.39 dirhams/unit
UAE nationals
Tariff paid 0.07
Subsidy 0.32
Tap either section for more detail.
Expatriates
Tariff paid 0.27
Subsidy 0.12
Tap either section for more detail.
Industry
Tariff paid 0.29
Subsidy 0.10
Tap either section for more detail.
Commercial
Tariff paid 0.20
Subsidy 0.19
Tap either section for more detail.
Government
Tariff paid 0.29
Subsidy 0.09
Tap either section for more detail.
Agriculture
Tariff paid 0.05
Subsidy 0.34
Tap either section for more detail.
Economic cost Tariff paid Subsidy

Source: MCC analysis of the distribution company’s 2024 tariffs, the Department of Energy price documents and the generation company’s 2023 accounts.

What it shows: the real cost of electricity, about 0.39 dirhams a unit, next to each consumer group’s tariff with the government subsidy stacked on top. Key takeaway: every group pays less than the real cost, and the groups paying least, UAE nationals and agriculture, receive the biggest subsidy per unit.

Is solar a good investment in the United Arab Emirates?

For most homes and businesses, yes, and the biggest savings go to those who pay the normal rate for electricity rather than a heavily discounted one. MCC worked out the costs and savings for each type of customer using a financial model. A typical household on the standard rate gets its money back in about three to three and a half years, then keeps saving for the life of the panels, usually around twenty-five years. Shops and offices get their money back in about four to five years, and larger industrial sites in about the same. The exception is households on the discount rate, where the cheap electricity means solar takes up to about twenty years to pay for itself.

What it shows: what each Abu Dhabi consumer group pays per unit and the subsidy filling the gap to the real cost of about 0.39 dirhams. Key takeaway: the groups paying least, households on the discount rate and farms, carry the biggest subsidy, so they gain least from solar while the government would gain most.

Table 2: Distributed solar by customer group in Abu Dhabi, showing system type, install cost, years to pay back and yearly return over 25 years. Payback is the time before savings cover the cost; return is the yearly gain on the money.

Measure Household on discount rate Household on standard rate Shop or office Industrial site
What they pay for electricity now (dirhams a unit) 0.07 0.27 0.20 0.29
Type of solar Rooftop Rooftop Rooftop Ground-mounted
System size (kilowatts) 4 4 500 900 to 3,000
Cost to install (thousand dirhams) 9.8 to 10.6 9.8 to 10.6 1,224 to 1,326 3,213 to 13,770
What the solar electricity costs (dirhams a unit) 0.11 to 0.12 0.11 to 0.12 0.12 to 0.13 0.17 to 0.22
Years to pay back 17.6 to 22.8 3.2 to 3.5 4.4 to 4.8 4.5 to 5.9
Yearly return over 25 years 0.2% to 1.4% 30.8% to 34.0% 20.8% to 23.0% 16.1% to 22.4%

Household on discount rate

Current electricity price 0.07 dirhams a unit
Type of solar Rooftop
System size 4 kilowatts
Cost to install 9.8 to 10.6 thousand dirhams
Solar electricity cost 0.11 to 0.12 dirhams a unit
Years to pay back 17.6 to 22.8
Yearly return over 25 years 0.2% to 1.4%

Household on standard rate

Current electricity price 0.27 dirhams a unit
Type of solar Rooftop
System size 4 kilowatts
Cost to install 9.8 to 10.6 thousand dirhams
Solar electricity cost 0.11 to 0.12 dirhams a unit
Years to pay back 3.2 to 3.5
Yearly return over 25 years 30.8% to 34.0%

Shop or office

Current electricity price 0.20 dirhams a unit
Type of solar Rooftop
System size 500 kilowatts
Cost to install 1,224 to 1,326 thousand dirhams
Solar electricity cost 0.12 to 0.13 dirhams a unit
Years to pay back 4.4 to 4.8
Yearly return over 25 years 20.8% to 23.0%

Industrial site

Current electricity price 0.29 dirhams a unit
Type of solar Ground-mounted
System size 900 to 3,000 kilowatts
Cost to install 3,213 to 13,770 thousand dirhams
Solar electricity cost 0.17 to 0.22 dirhams a unit
Years to pay back 4.5 to 5.9
Yearly return over 25 years 16.1% to 22.4%

What it shows: system type, install cost, payback and yearly return for each customer group. Key takeaway: payback runs about three to five years for everyone except discount-rate households, where cheap electricity stretches it to about twenty.

How much does rooftop solar cost, and can you put it on your house?

A typical home system costs roughly 9,800 to 10,600 dirhams to install, with only about 100 dirhams of upkeep in the first year. There is an important catch, though. The report notes that homes in Abu Dhabi are reportedly not yet allowed to install their own solar, so while the savings would work for a household, the option may not be open to you right now. Commercial and industrial sites face fewer restrictions, and their savings are strong, which is where most of the near-term opportunity sits. Anyone weighing a specific installation should check the current rules first, since they are still changing.

Is a big solar farm better than solar on your roof?

A large solar farm makes electricity more cheaply than rooftop panels, but that is not the whole story, because it leaves out the cost of getting the electricity to you. Big projects in the region are impressively cheap to run. The Al Dhafra solar farm produces at about 0.05 dirhams a unit. But a big farm’s low price only counts the cost of making the electricity, not the poles, wires and stations needed to carry it to homes, which is a large part of what you actually pay. Rooftop panels sit where the electricity is used, so they skip most of that delivery cost, and they add benefits a distant farm cannot, like charging an electric car at home and easing pressure on the grid at busy times. Both kinds are useful, and both are needed.

“However, LCOEs can be misleading as they only reflect the ‘generation’ costs and not the ‘landed’ electricity cost that consumers pay, a large element of which is transmission and distribution costs.” MCC Economics, Investment in Distributed Solar report.

Table 3: Cost to make electricity at large solar farms in the Gulf region, in dirhams per unit, lowest to highest.

Solar farm Cost to make electricity (dirhams a unit)
MBR Phase 2 0.21
Askar Landfill 0.14
MBR Phase 3 0.11
Sweihan 0.11
MBR Phase 4 0.10
Sakaka 0.09
MBR Phase 5 0.06
Al Karsaah 0.06
Al Dhafra 0.05

Source: MCC compilation; Al Dhafra figure from the Emirates Water and Electricity Company.

Figure 5: What large Gulf solar farms charge for their electricity, in dirhams per unit, highest to lowest.

What large Gulf solar farms charge for their electricity (dirhams per unit), highest to lowest

MBR Phase 2, Dubai
Askar Landfill, Bahrain
MBR Phase 3, Dubai
Sweihan, Abu Dhabi
MBR Phase 4, Dubai
Sakaka, Saudi Arabia
MBR Phase 5, Dubai
Al Karsaah, Qatar
Al Dhafra, Abu Dhabi

Costs fall as projects get newer and larger; hover or tap any bar. The navy bar is Al Dhafra, the cheapest.

Source: MCC compilation; Al Dhafra figure from the Emirates Water and Electricity Company.

What it shows: the contracted cost of electricity at nine large Gulf solar farms, from 0.21 dirhams a unit at the earliest Dubai project down to 0.05 at Al Dhafra. Key takeaway: each new project has come in cheaper than the last, and the cheapest now undercuts every tariff in Abu Dhabi.

Figure 6: Solar generation costs against the economic cost of electricity and tariffs in Abu Dhabi, in dirhams per unit.

Solar generation costs against the economic cost of electricity and tariffs in Abu Dhabi (dirhams per unit)

Solar cost to generate

Utility-scale solar
Roof-top solar
Ground-mounted solar

Economic cost of electricity

Economic cost
Implied split

Retail tariffs

UAE nationals
Expatriates
Average tariff and subsidy

What it shows: the three solar options against the full economic cost of grid electricity and the tariffs people actually pay, with the source’s two split bars. Key takeaway: rooftop solar at 0.12 dirhams beats the 0.39 economic cost and the expatriate tariff of 0.27, so it pays for everyone except the most heavily subsidised groups.

Figure 7: Historical and forecast solar capacity in Abu Dhabi, centralised against three distributed scenarios, in gigawatts.

Measure Household on discount rate Household on standard rate Shop or office Industrial site
What they pay for electricity now (dirhams a unit) 0.07 0.27 0.20 0.29
Type of solar Rooftop Rooftop Rooftop Ground-mounted
System size (kilowatts) 4 4 500 900 to 3,000
Cost to install (thousand dirhams) 9.8 to 10.6 9.8 to 10.6 1,224 to 1,326 3,213 to 13,770
What the solar electricity costs (dirhams a unit) 0.11 to 0.12 0.11 to 0.12 0.12 to 0.13 0.17 to 0.22
Years to pay back 17.6 to 22.8 3.2 to 3.5 4.4 to 4.8 4.5 to 5.9
Yearly return over 25 years 0.2% to 1.4% 30.8% to 34.0% 20.8% to 23.0% 16.1% to 22.4%

Household on discount rate

Current electricity price 0.07 dirhams a unit
Type of solar Rooftop
System size 4 kilowatts
Cost to install 9.8 to 10.6 thousand dirhams
Solar electricity cost 0.11 to 0.12 dirhams a unit
Years to pay back 17.6 to 22.8
Yearly return over 25 years 0.2% to 1.4%

Household on standard rate

Current electricity price 0.27 dirhams a unit
Type of solar Rooftop
System size 4 kilowatts
Cost to install 9.8 to 10.6 thousand dirhams
Solar electricity cost 0.11 to 0.12 dirhams a unit
Years to pay back 3.2 to 3.5
Yearly return over 25 years 30.8% to 34.0%

Shop or office

Current electricity price 0.20 dirhams a unit
Type of solar Rooftop
System size 500 kilowatts
Cost to install 1,224 to 1,326 thousand dirhams
Solar electricity cost 0.12 to 0.13 dirhams a unit
Years to pay back 4.4 to 4.8
Yearly return over 25 years 20.8% to 23.0%

Industrial site

Current electricity price 0.29 dirhams a unit
Type of solar Ground-mounted
System size 900 to 3,000 kilowatts
Cost to install 3,213 to 13,770 thousand dirhams
Solar electricity cost 0.17 to 0.22 dirhams a unit
Years to pay back 4.5 to 5.9
Yearly return over 25 years 16.1% to 22.4%

What it shows: the report’s full capacity picture, the centralised build-out from 0.1 gigawatts in 2018 to a forecast 10.3 by 2030, against the three distributed-solar growth scenarios from Table 4. Key takeaway: even the fastest distributed path reaches 3.8 gigawatts by 2030, so distributed solar complements rather than replaces the large farms, while cutting the subsidy bill every year.

Table 4: Three distributed-solar growth scenarios for Abu Dhabi to 2030, with the subsidy saved and carbon avoided under each, alongside large solar farms for comparison.

Measure Slow growth Medium growth Fast growth Large solar farms for comparison
Yearly growth from 2024 10% 21% 30% 20%
Solar capacity by 2030 (gigawatts) 2.4 3.1 3.8 10.3
Electricity made in 2030 (gigawatt-hours) 6,658 8,659 10,823 29,073
Subsidy saved in 2030 (million dirhams) 903 1,175 1,468 3,943
Carbon avoided in 2030 (million tonnes a year) 3.1 4.0 5.0 13.5

Slow growth

Yearly growth from 2024 10%
Solar capacity by 2030 2.4 GW
Electricity made in 2030 6,658 GWh
Subsidy saved in 2030 903 million dirhams
Carbon avoided in 2030 3.1 million tonnes a year

Medium growth

Yearly growth from 2024 21%
Solar capacity by 2030 3.1 GW
Electricity made in 2030 8,659 GWh
Subsidy saved in 2030 1,175 million dirhams
Carbon avoided in 2030 4.0 million tonnes a year

Fast growth

Yearly growth from 2024 30%
Solar capacity by 2030 3.8 GW
Electricity made in 2030 10,823 GWh
Subsidy saved in 2030 1,468 million dirhams
Carbon avoided in 2030 5.0 million tonnes a year

Large solar farms for comparison

Yearly growth from 2024 20%
Solar capacity by 2030 10.3 GW
Electricity made in 2030 29,073 GWh
Subsidy saved in 2030 3,943 million dirhams
Carbon avoided in 2030 13.5 million tonnes a year

What it shows: the three growth scenarios with the subsidy saved and carbon avoided under each. Key takeaway: even the slowest path saves around 900 million dirhams of subsidy a year by 2030, and the 30 percent path reaches about 1.5 billion dirhams and 5 million tonnes of carbon avoided.

References

  1. Abu Dhabi Department of Energy. (2023). Price control final decision. https://www.doe.gov.ae/-/media/Project/DOE/Department-Of-Energy/Price-Controls/RC2-final-decision-paper-12-June-2023.pdf
  2. Abu Dhabi Distribution Company. (2024). Utility tariff 2024. https://www.addc.ae/en-US/residential/Documents/Tariff%20Booklet%202024%20English.pdf
  3. Emirates Water and Electricity Company. (n.d.). Al Dhafra Solar PV. https://www.ewec.ae/en/power-plant/al-dhafra-solar-pv
  4. International Energy Agency. (2024). World energy investment 2024: Middle East. https://www.iea.org/reports/world-energy-investment-2024/middle-east
  5. International Trade Administration. (2024). United Arab Emirates: Renewable energy and clean energy. U.S. Department of Commerce. https://www.trade.gov/country-commercial-guides/united-arab-emirates-renewable-energy-and-clean-energy-0
  6. TAQA. (2024). Annual report 2023. https://www.taqa.com/wp-content/uploads/2024/03/TAQA_2023_Annual-Report.pdf

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