São Tomé and Príncipe's
EMAE—the Water and Electricity Company
EMAE: The Utility Blocking São Tomé and Príncipe's Development
What Is EMAE?
Empresa de Água e Eletricidade (EMAE)—the Water and Electricity Company—is São Tomé and Príncipe's state-owned monopoly utility.
What it does:
- Generates all electricity (vertically integrated monopoly)
- Operates transmission and distribution networks
- Provides water supply nationwide
- Serves 27,000 customers
Legal status: 100% state-owned public enterprise with administrative and financial autonomy
The problem: EMAE is technically insolvent, operationally incompetent, and the single largest bottleneck to São Tomé and Príncipe's economic development.
The Financial Catastrophe
Massive Debt Burden
EMAE owes fuel supplier (ENCO): $178.3 million as of 2022
As percentage of GDP: 23-35% depending on measurement year
As percentage of total public debt: 35.3%
Translation: One bankrupt utility company owes debt equivalent to roughly one-third of the entire country's GDP.
Structural Loss-Making
The impossible economics:
- Production cost: $0.34 per kWh (among highest in sub-Saharan Africa)
- Tariff charged: $0.22 per kWh
- Loss per kWh sold: $0.12
Annual operational loss (2017): 226.6 million Dobras
Why tariffs don't cover costs:
- Last updated 2007 (unchanged for 17+ years until 2025)
- "Social tariffs" keep prices artificially low
- Political resistance to increases
- Residential customers pay only 46% of production cost (2016)
Result: EMAE loses money on every kilowatt-hour it sells. The more electricity it provides, the more money it loses.
How Debt Accumulated
The vicious cycle:
- EMAE generates electricity using expensive imported diesel
- Charges tariffs too low to cover costs
- Cannot pay fuel supplier (ENCO)
- Government guarantees fuel payments to keep lights on
- Debt accumulates as public liability
- EMAE has no money for maintenance or investment
- Infrastructure deteriorates
- Service becomes worse
- Repeat
Government exposure: Contingent liabilities from EMAE could add 23% of GDP to public debt if fully materialized.
IMF assessment: EMAE is the main source of debt vulnerability for São Tomé and Príncipe.
Operational Challenges
Inadequate Capacity
Installed capacity: 26-31 MW (varies by source, showing poor record-keeping)
Actually available: Only 17-20 MW due to poor maintenance and breakdowns
Peak demand: 20.8 MW
Gap: Cannot meet basic demand even at current low consumption levels
Result: Daily blackouts, forced rationing, unreliable service
System Losses
Total losses: 33-34% of electricity generated never gets paid for
Breakdown:
- Technical losses: Aging infrastructure, poor maintenance, transmission inefficiencies (~13%)
- Commercial losses: Theft, fraud, illegal connections, non-payment (~21%)
Specific problems:
- 30% of customers have no contract with EMAE (illegal connections)
- 10% of metered customers don't pay
- 32.4% of domestic clients didn't pay bills (2017)
- 31% of government agencies didn't pay bills (2017)
- Widespread electricity theft
- Inconsistent billing
- Limited metering (many customers estimated, not metered)
Context: Well-run utilities have total losses of 8-12%. EMAE's 33-34% is catastrophic.
Diesel Dependency
Current generation mix: 92-96% diesel thermal plants
Why this is terrible:
- Diesel is expensive ($36.3 million/year fuel import bill)
- Prices are volatile (international oil markets)
- Polluting
- Requires constant fuel imports (foreign exchange drain)
- High maintenance costs
Alternative available: Small hydroelectric plants provided 80% of electricity in the 1980s but were allowed to degrade without maintenance
Impact on Investors
EMAE's dysfunction creates severe constraints for any investor in São Tomé and Príncipe:
For Energy Investors (Independent Power Producers)
The off-taker problem: You build a solar or hydro plant to sell electricity to EMAE. But:
- EMAE cannot pay: Already $178 million in debt to fuel supplier
- EMAE lacks creditworthiness: No bank would finance based on EMAE purchase agreements
- Power Purchase Agreements (PPAs) are worthless: EMAE signature means nothing without sovereign guarantee
- Payment delays inevitable: Even with guarantees, expect long delays
Example scenario:
- You invest $15 million in 10 MW solar plant
- Sign 20-year PPA with EMAE at $0.18/kWh
- EMAE stops paying after 6 months (no cash)
- You're stuck—no alternative buyers (EMAE monopoly)
- Even with government guarantee, collecting payments requires arbitration
- Your project financing defaults
Bottom line: Cannot invest in grid-connected generation without fundamental EMAE reform and bulletproof guarantees.
For All Other Investors (Tourism, Agro-Processing, Manufacturing)
You cannot rely on EMAE for power, so you must:
Install diesel generators:
- Capital cost: $1,000-1,500 per kW
- Fuel cost: $0.40-0.50 per kWh (more than EMAE tariff)
- Maintenance: High
- Noise/pollution: Destroys guest experience (tourism)
- Reliability: Your responsibility
Or install solar + batteries:
- Capital cost: $1,200-2,000 per kW installed
- Fuel cost: $0 (but battery replacement every 8-10 years)
- Requires upfront capital
- Technical expertise needed
Impact on project economics:
50-room hotel example:
- Peak load: ~150 kW
- Diesel generator cost: $150,000-225,000
- Annual fuel: ~$100,000 (at $0.45/kWh, 250,000 kWh/year)
- 10-year cost: ~$1.2-1.4 million
vs. Grid electricity (if reliable):
- Connection cost: ~$10,000
- Annual cost: ~$55,000 (at $0.22/kWh)
- 10-year cost: ~$560,000
Extra burden from EMAE dysfunction: $600,000-800,000 over 10 years for one 50-room hotel
Multiply across tourism sector, processing facilities, manufacturing—EMAE's failure adds millions in unnecessary costs annually.
For Service Quality
Even captive generation doesn't solve everything:
- Datacenters need stable grid backup (diesel won't work)
- Cold chain operations need 24/7 reliability
- Manufacturing needs consistent power quality
- Digital services require uninterrupted connectivity
EMAE cannot provide any of these, making many service businesses unviable.
Why EMAE Matters for Energy Transition
The government's 50% renewable by 2030 target requires $190-300 million private investment.
But private investors face:
1. No credible off-taker: EMAE cannot sign bankable PPAs
2. Grid inadequacy: Adding 55 MW renewable capacity to grid designed for 20 MW requires massive infrastructure investment
3. Uncertain tariff reform: Even if you generate cheaply, EMAE may not pay cost-reflective tariffs
4. Monopoly lock-in: Law requires independent producers sell to EMAE (cannot bypass to sell directly to customers)
5. Reform uncertainty: Government promises EMAE restructuring but track record is poor
Result: The energy transition cannot proceed at scale until EMAE is fixed.
Reform Plans: Promises and Progress
The government and international partners (IMF, World Bank, EIB) recognize EMAE as the critical bottleneck and have outlined reforms:
Planned Reforms (2024-2026)
1. Private sector participation: Grant commercial operations to private operator by 2026
Structure: Management contract or concession Goal: Bring professional operations, reduce losses, improve collections Status: Seeking consulting services to structure deal
2. Tariff adjustment: 20% increase by 2030 (IMF/World Bank requirement)
First step: New tariff methodology approved, first adjustment January 2025 Goal: Move toward cost-recovery ($0.22 → $0.26-0.28/kWh) Challenge: Political resistance, public opposition
3. Loss reduction: Target 18% total losses (from 33-34%)
Actions:
- Install smart meters for high-consumption customers
- Crack down on illegal connections
- Improve billing systems
- Enhanced collection enforcement
4. Infrastructure upgrades (World Bank/EIB funding):
- Low/medium voltage distribution network improvements
- Meter installation (currently many customers unmetered)
- Management Information System (MIS) implementation
- Grid reinforcement for renewable integration
5. Financial transparency: Publish audited financial statements starting 2026
6. Management improvement: Training programs, operational efficiency measures, accountability systems
7. Hydropower rehabilitation: Shift from diesel to rehabilitated small hydro plants
IMF Structural Benchmarks
EMAE restructuring is a structural benchmark in the Extended Credit Facility (ECF) program.
Conditions:
- Must demonstrate progress on reforms
- Tariff adjustments required
- Loss reduction targets
- Private sector participation roadmap
Leverage: IMF can suspend program if EMAE reforms stall, creating strong pressure for action.
Past Track Record
The skeptical view: EMAE has been "reforming" for decades with minimal results.
Evidence of failure:
- Tariffs unchanged 2007-2024 (17 years of paralysis)
- System losses still 33% despite decades of "improvement plans"
- Debt accumulated to 35% of GDP
- Infrastructure deteriorated despite World Bank projects
- Energy crises in 2018, 2021 from failed implementation
The optimistic view: IMF conditionality creates unprecedented pressure; private sector participation by 2026 would be genuinely transformative if executed.
What Investors Should Watch
Green Lights (Reform Succeeding)
1. Tariff increases actually implemented (January 2025 was first test—watch for follow-through)
2. Private operator announced (credible international utility company takes over management)
3. Loss reduction results (quarterly data showing 30% → 25% → 20% → 18% trajectory)
4. EMAE pays ENCO debt (arrears declining, not growing)
5. Independent audit published (transparent financials by 2026)
6. Smart meter rollout (thousands of meters installed monthly)
Red Lights (Reform Failing)
1. Tariff increases postponed (political resistance wins, January 2025 adjustment reversed)
2. No private operator by 2027 (government cannot execute tender)
3. Losses stay above 30% (enforcement failures, theft continues)
4. EMAE debt to ENCO grows (fiscal situation worsens)
5. IMF program suspended (conditionality violations due to EMAE)
6. Energy crisis repeats (blackouts intensify in 2025-2026)
Investment Strategies Given EMAE Reality
Strategy 1: Wait for Reform (2025-2026)
Approach: Monitor EMAE restructuring closely; invest only if reforms succeed
Advantages:
- Avoid betting on uncertain reform
- Let others take first-mover risk
- Enter once operating environment proven
Disadvantages:
- Miss first-mover advantages
- Best terms may go to early investors
- 2-3 year delay in projects
Best for: Risk-averse investors, those with alternative markets
Strategy 2: Captive Generation Only
Approach: Invest in projects with own solar/battery systems, zero reliance on EMAE
Advantages:
- Complete independence from EMAE dysfunction
- Benefit from import duty exemptions on equipment
- Control your own reliability
- Immediate implementation (no waiting for reform)
Disadvantages:
- Higher upfront capital
- Cannot monetize excess generation (EMAE won't pay)
- Limited to consumption-matched projects
Best for: Tourism, resorts, processing facilities with significant stable loads
Strategy 3: Require Bulletproof Guarantees
Approach: Invest in grid-connected generation ONLY with sovereign guarantees + MIGA insurance + escrow accounts
Structure:
- Sovereign guarantee on EMAE payments
- MIGA political risk insurance
- World Bank partial risk guarantee
- Escrow account funded from tax revenues
- ICSID arbitration for disputes
- Termination rights if payments delayed >90 days
Advantages:
- Pursue grid-scale opportunities
- Multilateral backing reduces risk
- Government desperate enough to accept terms
Disadvantages:
- Complex structuring
- Long negotiations
- Requires $10+ million projects to justify structure
- Still carries execution risk
Best for: Large renewable IPPs, developers with blended finance experience
Strategy 4: Partner with Private Operator (Post-2026)
Approach: Wait for private operator to take over EMAE operations, then invest
Rationale:
- Credible private utility can sign bankable PPAs
- Professional operator improves collections, reduces losses
- Grid becomes more reliable
- Off-taker risk substantially reduced
Timing: Only viable if private participation succeeds (2026-2027)
Best for: Medium-term investors willing to wait for fundamental reform
The Brutal Reality
EMAE is
Financially: Insolvent with debt equal to 35% of GDP
Operationally: 33% system losses, cannot meet demand, constant blackouts
Institutionally: Unchanged tariffs for 17 years, no audits, poor management
Impact: Blocks energy transition, forces expensive self-generation, constrains entire economy
For investors: EMAE is the single biggest risk to any project requiring grid electricity.
Reform timeline: 2025-2026 is critical—either fundamental restructuring succeeds or energy crisis persists indefinitely.
Bottom line investment implications:
✓ Plan for self-generation (solar + batteries, not diesel) for any project
✓ Do NOT invest in grid-connected generation until EMAE demonstrates radical improvement
✓ Watch 2025-2026 closely: Tariff increases, private operator selection, loss reduction, IMF program compliance
✓ If reform succeeds: Massive opportunities open up for grid-scale renewables, energy services, efficiency projects
✓ If reform fails: Energy sector remains uninvestable except for captive consumption; broader economy stays constrained
The energy crisis is São Tomé and Príncipe's make-or-break issue. EMAE is the bottleneck. Everything—tourism growth, agro-processing, blue economy, debt sustainability, middle-income aspirations—depends on fixing this one bankrupt, incompetent utility in the next 24 months.
For investors: EMAE's dysfunction is why 20 MW solar projects remain unbuilt despite clear need. It's why hotels run diesel generators 24/7. It's why the 2030 renewable target looks increasingly fictional.
Watch the reform. If it happens, opportunities are transformative. If it doesn't, the energy investment case collapses.