Law 444 makes it illegal for any machine to pollute the air or make noise beyond the limits Lebanon has set. Generators are machines. Here is what the rules require, what compliance would cost an operator, and how to act when one ignores them.
Diesel exhaust is a confirmed cause of lung cancer, the WHO cancer agency's highest category.3
2×
Cancer-causing compounds in Beirut's air doubled between 2017 and 2022–23 as generators took over.4
45dB(A)
Lebanon's legal noise ceiling for city residential areas at night.8
≈1.8¢
Per kWh: what filters, silencing and the other required fixes add for a typical 500 kVA generator, in our model.
The problem
Soot by day, engines all night
Since Électricité du Liban's supply collapsed in 2019, neighbourhood generators have become most people's main source of power.4 Many are wedged between buildings with poor ventilation, and many in Beirut have no filters.38,10
The air
In 2012 the WHO's cancer agency classified diesel engine exhaust as carcinogenic to humans (Group 1), with sufficient evidence that it causes lung cancer and a positive association, on limited evidence, with bladder cancer.3
American University of Beirut (AUB) researchers measured cancer-causing compounds in Beirut's air rising from 0.66 to 1.36 ng/m³ between 2017 and 2022–23. They estimate the lifetime cancer risk from that air rose by about half.4
Fine particles (PM2.5) averaged 25 µg/m³ over two seasons at one Beirut site, five times the WHO's annual guideline of 5.4
In an AUB study of two mid-size Beirut generators, about 87% of the particles were smaller than 0.33 microns, small enough to reach deep into the lungs and the bloodstream. They carried polycyclic aromatic hydrocarbons, dioxins and heavy metals.5
The night
The WHO recommends that night-time noise outside bedrooms stay below 40 dB on average, and below 30 dB(A) inside bedrooms for good sleep.6
Above 40 dB at night, adverse effects on sleep and health appear. Above 55 dB, effects on the heart and blood vessels become a major concern.7
Lost sleep costs money: the WHO notes that night noise drives more medical visits and more spending on sleeping pills, which falls on family budgets.6
Lebanon's own limits allow 55 dB(A) by day, 50 in the evening and 45 at night in city residential areas.8
~7,000
neighbourhood generators across Lebanon, by the Economy Ministry's count.9
~9,300
generators in Beirut, about one for every two buildings.4,10
1 in 3
failed at least one basic rule (meters, filters or official prices) in an early-2025 Economy Ministry survey of 750 generators.9,22
400+
violation reports against generator owners in Beirut by early 2026, according to MP Najat Saliba.10
The law
Law 444 in plain words
Law 444 of 29 July 2002 is Lebanon's framework environmental law: 68 articles in seven parts.1 Its air and noise articles bind anyone who runs an engine, and Article 25 covers fuel burned to generate power. These are the articles that matter for a generator, in our own words; read the full Arabic text for the exact wording.2
Art. 4
Principles that bind everyone
Precaution, prevention and "the polluter pays" apply to every person, public or private.
Art. 24
No polluting the air
No one may emit air pollutants, including nuisance odours, beyond the legal limits, or own or operate a machine that does.
Art. 25
Fuel burning and chimneys
Emissions from burning fuel, including for industry or power generation, must stay within the permitted maximums. Chimney and emission-control specifications follow national standards.
Art. 26
No excess noise
Anyone using engines, vehicles or loudspeakers must keep noise within the maximum permitted levels.
Art. 27
Warning, then shutdown
The local authority warns anyone breaking Articles 24–26. If they have not complied by the deadline, or in an emergency, the Environment Minister can act to stop the polluting activity.
Art. 46
Noise rules by decree
Detailed conditions for noise from facilities and vehicles are set by decree of the Council of Ministers.
Art. 51–52
Polluters pay for the damage
Whoever harms people or the environment owes compensation and must remove the damage at their own expense.
Art. 54–56
Inspections and fast courts
Judicial police and Ministry inspectors may enter sites, inspect and take samples. Reports go to the public prosecutor, and a single judge hears the case under fast-track procedure.
Art. 57
Administrative penalties
After a written warning: special conditions, licence suspension, closure, or clean-up at the violator's cost.
Art. 59
Criminal penalties
Breaking the law's air, sea, water or soil protections: one month to one year in prison and/or a fine of LBP 2–10 million, doubled for repeat offences. Article 64 adds that these penalties do not rule out others under the penal code or civil compensation.
The fines are frozen in 2002 pounds
Law 444's fines were written when the pound was pegged at LBP 1,507.5 to the dollar. Unless later legislation has raised them, they are now worth little. Prison terms, shutdown powers and closure orders are not affected.
Penalty
As written
Worth in 2002
Worth today
Art. 59 (air, sea, water, soil)
LBP 2–10 m
$1,327–6,633
$22–111
Art. 63 (other violations)
LBP 0.5–5 m
$332–3,317
$6–56
Today's values at LBP 89,700 per dollar, the rate the Ministry of Energy used in October 2026.23
The rules that apply Law 444 to generators
1996
Decision 52/1, Ministry of Environment. National environmental standards, including maximum noise levels for six types of area.8
2002
Law 444, Environmental Protection. The air, noise and penalty articles above.1
2012
Decree 7964. Public safety and fire prevention in buildings. Beirut applies it to generator sites.41
2014
Law 251. Dedicated environmental prosecutors and investigating judges, and an environmental police. Their remit covers breaches of Law 444 and damage caused by noise.11
2018
Law 78 of 13 April 2018, Air Quality Protection. National air monitoring, and emission limits for stationary and mobile sources.12,40
2022
Decision 16/1 (4 Feb). Updated emission limits for industry and energy, generators included, phased in from February 2023. Beirut's bulletins take the minimum exhaust-stack height from it.13,17
2023
Circular 2/1 (1 Sep). Exhausts must be treated with a system that removes fine particles, stacks must meet a minimum height, and maintenance must be regular. For the first time, a diesel particulate filter is required on generators above 200 kW of thermal power. Non-compliant generators can be stopped.14,15,39
2024
Circular 4/1 (1 Aug). A catalytic converter on every generator; a particle filter of at least 70% efficiency from 85 kVA; stack, safety and maintenance conditions. Beirut's governor applied it in a bulletin in November 2024.16,18
2025
Circular 9/1 (5 Aug). Beirut sites from 85 kVA must file an engineer-signed technical report with the Ministry of Environment.19 On 13 August the Cabinet gave operators 45 days to install meters and filters and follow official prices; circulars followed from Prime Minister Nawaf Salam and, as Circular 31/2025, from the Economy Ministry.20,21,22 Inspections began on 30 September; penalties include legal notices, seizure and confiscation of generators, and referral to the courts.22
2026
Enforcement in Beirut. On 21 January more than 20 operators were referred to the police to be stopped, and MP Najat Saliba counted more than 400 violation reports. She says she worked with former Environment Minister Nasser Yassin on amending Circular 4/1 so that filter specifications follow engine size.10
Checklist
What a legal generator needs
The Ministry of Environment sets these conditions in circulars that governors and municipalities enforce; Beirut's governor has published the most detailed bulletins. "From 85 kVA" counts all the generators an operator runs on one site together.17
DOC
Catalytic converter
An oxidation catalyst in the exhaust that burns off carbon monoxide and unburnt hydrocarbons.
From 85 kVA, Decision 16/1 sets the minimum: the height of the neighbouring building within 50 m plus the square root of the generator's capacity, and at least 5 m above the generator. A fitted DPF waives this rule. Smaller units: at least 3 m above the tallest adjacent building, or 3 m above the generator where there is none.
Every generatorDecision 16/1; Beirut bulletins15,16,17
ELV
Emission limits
Exhaust must stay within the emission limit values in Decision 16/1, which applies to the energy sector, generators included.
Every generatorLaw 444 Art. 24–25; Decision 16/113
dB(A)
Silencer and sound insulation
Beirut lists the silencer and insulation among the mandatory conditions. Whatever the equipment, the neighbourhood must stay within the legal noise limits below.
Every generatorLaw 444 Art. 26; Decision 52/1; Beirut bulletin 202417,18
SERVICE
Regular maintenance, clean oil disposal
Periodic maintenance so the engine burns its fuel fully. Used oil goes only to licensed treatment companies, with the service contract shown to the municipality.
An individual meter for every subscriber, billed at the Ministry of Energy's monthly price. No unregistered VAT, maintenance fees or surcharges for households that also use solar.
Every subscription generatorCircular 31/2025; Ministry of Energy22,23
Lebanon's legal noise limits, dB(A)
Decision 52/1 of 1996 sets the ceiling by type of area.8
Area
Day
Evening
Night
Rural residential, hospitals, gardens
45
40
35
Suburban residential, light traffic
50
45
40
City residential
55
50
45
Residential with workshops or shops, or on a main road
60
55
50
Downtown commercial and administrative
65
60
55
Heavy industry
70
65
60
Why a canopy alone rarely meets the limit
One 100 kVA rental generator in a sound-attenuated canopy is rated 69 dB(A) at 7 m.33 In open air, sound falls by about 6 dB each time the distance doubles, so for that unit, reaching 45 dB(A) on distance alone would take more than 100 m. Quieter enclosures exist. Next to homes, operators meet the limit by engineering:
a residential-grade exhaust silencer, sized for the engine
an acoustic enclosure with lined walls and baffled air openings
anti-vibration mounts so the building does not carry the hum
siting away from bedroom windows, with barriers where needed
keeping doors closed and the enclosure intact in summer
The money
Can operators afford it? Run the numbers
The official price is built to cover an operator's costs. Here is how it works, and what the full compliance package does to a generator's profit.
How the official price is set
Each month the Ministry of Energy and Water publishes the price operators may charge. For October 2026 it is LBP 52,622 per kWh (about 58.7¢) in cities, and LBP 57,884 (64.5¢) where the network runs more than 300 m or in villages above 700 m. On top comes a fixed monthly charge: LBP 385,000 for 5 A, LBP 685,000 for 10 A, and LBP 300,000 for each further 5 A. The Ministry says the price covers all of an operator's costs plus "a good profit margin".23
We checked eight monthly prices, from November 2023 to October 2026, against the average diesel price the Ministry used for each. All of them sit on one straight line:
price per kWh = 0.354 × diesel price per litre + LBP 5,476
So every kWh you pay for buys the operator about a third of a litre of diesel, plus about 6¢. The World Bank puts Lebanon's generators at 3.2 kWh per litre on average: about 0.31 litres per kWh generated, or 0.33 per kWh sold after network losses. Engines in good condition near their rated load do better, around 0.26.31 Whatever the engine saves below 0.354 litres, plus the 6¢, pays for everything else, including profit.
Every month's price follows the diesel price
Official price per kWh against the Ministry's average diesel price, eight months from November 2023 to October 2026. Line: the formula above.23,24,25,26,27,28,29,30
Show the data
Month
Diesel, LBP / 20 L
Price, LBP / kWh
Formula gives
Generator profit model
Monthly figures in US dollars. Change any number; everything recalculates.
Profitable after compliance
Profit before compliance
–
Compliance cost
–
Profit after compliance
–
Where each kWh of revenue goes
Monthly breakdown
Per month
US$
What the model shows
Take the World Bank's typical Lebanese generator, a 500 kVA unit31, running 20 hours a day at half load, burning the World Bank's average 0.31 litres per kWh and charging the official October 2026 price. Our model puts its profit at about $5,750 a month before compliance.
The full package (converter and filter replaced every 12,000 engine hours, cleaning, 2% extra fuel, a silencer and enclosure upgrade, a taller stack and a technical report every two years) costs about $2,100 a month: 1.9¢ per kWh, 3% of revenue, about $6.80 per subscriber. Profit after compliance: about $3,600 a month.
Fuel efficiency moves profit far more than compliance does. With an engine in good condition, the same generator makes about $13,900 before compliance and $11,900 after, and regular maintenance is itself a legal requirement. The squeeze comes from short hours and expensive filters: at 12 hours a day the average-efficiency unit keeps about $1,600 a month after compliance; at 20 hours, with filters that cost double, last only 8,000 hours and add 5% to fuel use, it keeps about $450.
Small, half-empty generators are the hard case
Two 100 kVA units taking turns at half load earn little at the official price even before compliance: about $350 a month with paid staff and rent, and a loss of about $380 after it. Compliance costs them more per kWh (about 2.7¢) because the same fixed costs are spread over less electricity. Run by the owner with no paid staff or rent, about $700 a month remains.
That is a problem of scale and load, and it exists before any filter is fitted. Options include merging small networks or a Ministry price rule that recognises compliance costs. It is not a reason to let small generators pollute.
All figures are estimates. Equipment prices, staff, rent and running hours vary by site: change them in the model, and use real quotes before relying on any number.
Check your own bill
Your legal bill is the fixed charge for your amps plus the kWh on your meter times the official price.23
Uses the October 2026 price. Operators may not add unregistered VAT, maintenance fees, or a surcharge for using solar.23
Take action
When a generator breaks the rules
Complaints work best in writing, with evidence, and from several neighbours. Keep every complaint number.
Check
Compare the generator with the checklist. Black smoke? Soot on walls and balconies? An exhaust pipe below nearby windows? Loud at night?
Record
Take dated photos and videos of smoke, soot and the exhaust. Note the hours when it is worst. A phone sound-meter app gives an indication, not a legal measurement. Keep your bills and meter readings.
Complain
File in writing with the bodies below. Ask neighbours to sign the same letter or file their own.
Follow up
Use the complaint number to ask what happened. Send copies to your municipality and your MPs.
Ministry of Environment
Noise from generators is one of the Ministry's listed complaint subjects. Submit its complaint form, or your own dated and signed letter with your address and phone number, at the Ministry's registry (Diwan) with a LBP 1,000 fiscal stamp. The Ministry inspects, can take samples and photos, and refers the file for action.35
Law 251/2014 created dedicated environmental prosecutors, covering breaches of Law 444 and damage from noise. You can submit the Ministry's complaint form to the prosecutor in your governorate, by hand or by post.11,36
Municipality, governor or qaimaqam
They apply the Ministry's circulars locally, issue warnings under Article 27 and can stop non-compliant generators. In Beirut, generator technical reports go to the Ministry of Environment, with a copy to the municipality's Classified Establishments Service.19
Overcharging or no meter
The Economy Ministry's consumer protection directorate handles generator prices and meters.9,37,42
Ministries work in Arabic, so file the Arabic version. Fill in the brackets, sign, add the stamp, and keep a copy.
إلى: وزارة البيئة – دائرة الديوان
الموضوع: شكوى بيئية بشأن مولّد كهربائي (تلوّث هواء وضجيج)
أنا الموقّع أدناه [الاسم الكامل]، المقيم في [العنوان الكامل]، هاتف [الرقم]،
أتقدّم بهذه الشكوى بحقّ المولّد الكهربائي الكائن في [الموقع الدقيق للمولّد]، العائد إلى [اسم صاحب أو مستثمر المولّد إن عُرف].
يتسبّب هذا المولّد بـ [دخان أسود / روائح / سخام على الجدران والشرفات / ضجيج واهتزاز، خاصة ليلاً]، وذلك منذ [التاريخ]، ولا سيما بين الساعة [..] والساعة [..].
إنّ ذلك يخالف أحكام قانون حماية البيئة رقم 444 تاريخ 29/7/2002، ولا سيما المواد 24 و25 و26 منه، والحدود القصوى للضجيج المحدّدة في القرار رقم 52/1 لعام 1996، والقيم الحدّية للانبعاثات في القرار رقم 16/1 تاريخ 4/2/2022، والشروط الواردة في تعميم وزارة البيئة رقم 4/1 تاريخ 1/8/2024 (المحوّل الحفّاز، فلتر الجزيئات، ارتفاع العادم، الكاتم والعزل).
لذلك أطلب:
1. الكشف على المولّد وقياس الانبعاثات ومستوى الضجيج.
2. إنذار صاحبه بالتقيّد بالشروط البيئية ضمن مهلة محدّدة، عملاً بالمادة 27 من القانون رقم 444/2002.
3. اتخاذ الإجراءات القانونية اللازمة بحقّ المخالف، بما فيها وقف التشغيل عند الاقتضاء، وإحالة الملف إلى النيابة العامة البيئية المختصّة.
المرفقات: [صور / فيديو / قراءات / أسماء وتواقيع الجيران المتضرّرين]
التاريخ: [..]
التوقيع: [..]
(طابع مالي بقيمة 1,000 ل.ل.)
To: Ministry of Environment, Registry (Diwan)
Subject: Environmental complaint about an electricity generator (air pollution and noise)
I, the undersigned [full name], resident at [full address], telephone [number], submit this complaint about the generator located at [exact location], operated by [owner or operator, if known].
This generator causes [black smoke / odours / soot on walls and balconies / noise and vibration, especially at night], since [date], particularly between [time] and [time].
This breaches Environmental Protection Law No. 444 of 29 July 2002, in particular Articles 24, 25 and 26; the noise limits in Decision 52/1 of 1996; the emission limit values in Decision 16/1 of 4 February 2022; and the conditions in Ministry of Environment Circular 4/1 of 1 August 2024 (catalytic converter, particle filter, exhaust height, silencer and insulation).
I therefore request:
1. An inspection of the generator, with measurement of its emissions and noise.
2. A warning to the operator to comply within a set deadline, under Article 27 of Law 444/2002.
3. Legal action against the violator, including a halt to operation where necessary, and referral of the file to the competent environmental prosecutor.
Attachments: [photos / video / readings / names and signatures of affected neighbours]
Date: [..]
Signature: [..]
(LBP 1,000 fiscal stamp)
Questions
Fair questions
Aren't neighbourhood generators illegal anyway?
They sit in a grey zone. Selling electricity to the public is legally Électricité du Liban's job, so subscription generators break the electricity law, yet the state tolerates them and regulates their prices, meters and emissions.38,4 Law 444 applies either way: any machine that pollutes or makes noise beyond the limits breaks it.
Do filters actually work?
A diesel particulate filter traps most soot; one Lebanese supplier lists 90–95% particle reduction for its combined converter and filter.34 The rules require at least 70% efficiency. As MP Najat Saliba puts it, filters won't end air pollution, but they reduce it.10 Filters do nothing for noise; silencers and enclosures do.
Who pays for compliance?
The operator, from the official price, which the Ministry of Energy says already includes "a good profit margin".23 In our model the full package costs a typical 500 kVA operator about 3% of revenue.
My building's generator is small. Does any of this apply?
Yes. Every generator needs a catalytic converter and must respect the noise limits. Units under 85 kVA need a cyclone separator of at least 30% efficiency; the 70% particle filter and Beirut's technical report start at 85 kVA, counting all generators on the same site together.17,19
Is this legal advice?
No. See the full disclaimer. This is a plain-language guide based on the sources below. Circulars change; check the latest text with the Ministry of Environment or a lawyer before relying on it.
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إخلاء مسؤولية (ملخّص): هذا الموقع مبادرة توعية مستقلة، ومحتواه معلومات عامة وآراء في شأن عام، وليس استشارة قانونية أو مالية أو طبية أو هندسية. الموقع غير تابع لأي جهة رسمية أو سياسية أو تجارية. ملخّصات القوانين والتعاميم غير رسمية، والنصوص الرسمية المنشورة باللغة العربية هي وحدها المرجع. الأرقام الواردة في نموذج الأرباح وحاسبة الفاتورة تقديرات مبنيّة على افتراضات، ولا تصف أي مولّد أو مستثمر أو شركة بعينها، ولا يتضمّن الموقع أي اتهام لأي شخص محدّد. أنت وحدك المسؤول عن صحة أي شكوى تتقدّم بها وعن اتّباع الأصول القانونية والوسائل السلمية. استشر محامياً مُجازاً في لبنان قبل اتخاذ أي إجراء. لا يتحمّل القائمون على الموقع أي مسؤولية عن أي ضرر ناتج عن استخدامه أو الاعتماد عليه، ضمن الحدود التي يسمح بها القانون.