Reduce Your Company's STEG Bill: Complete 2026 Optimization Levers Guide
A company's STEG bill in 2026 consists of a fixed fee (subscription), active energy consumption (kWh), subscribed power (kVA), VAT (19% for businesses), and the FCT. Each item can be optimized through intelligent management and better control of your consumption peaks.
🔎 Tunisian context 2026: Industrialists account for 57% of demand from High and Medium Voltage customers. With an energy deficit of 11.1 billion dinars in 2025, optimizing the STEG bill has become a strategic issue for business competitiveness.
Energy in Tunisia: Key Figures and Current Challenges
Industry's Weight
Industrialists are the largest electricity consumers with 57% of demand from High and Medium Voltage customers. National electricity production reached 18,953 GWh by the end of November 2025, up 5% from the previous year. High Voltage sales increased by 17%, driven by the paper industry (+9%), water pumping (+9%), and extractive industries (+6%).
Energy Transition
Electricity production from renewable energies stands at 6%. Approximately 400 MW of photovoltaic rooftops have been installed in the residential sector and 70 MW in Medium and High Voltage (industrial, commercial, agricultural).
National 2030 Targets
Tunisia aims for a 30% reduction in primary energy demand, 35% of electricity production from renewable energies, and a 45% decrease in carbon intensity compared to 2010. To achieve these goals, 12 billion dinars in investments are planned.
STEG in Figures (2025-2026)
National Production: 18,953 GWh by end-Nov 2025 • Peak Demand: 4,837 MW • STEG Share: 95% of national production • Energy Deficit: 11.1 billion dinars in 2025
Components of Your STEG Bill
Understanding your bill's structure is essential to identify optimization levers.
Rates vary according to subscribed power and business sector. VAT is 19% for non-residential use, with a municipal surtax of 5 millimes/kWh and an FTE tax of 5 millimes/kWh.
How to Reduce Your STEG Bill
By adapting your consumption and managing your peaks, you can act on several cost items.
Subscribed Power Optimization
Principle: Subscribed power determines a fixed part of your bill. Too high a power level means paying for an unnecessary subscription; too low leads to overrun penalties (peak demand penalty).
Action: Smooth out your consumption peaks and adjust power as closely as possible to your actual needs using real-time monitoring.
Potential Gain: Several thousand dinars per year for optimizing 100 kW.
Peak Demand Penalty Control
Principle: The peak demand penalty is applied when your maximum power demand exceeds your subscribed power. The national peak reached 4,837 MW in 2025.
Action: Avoid simultaneous startups of large equipment, shift energy-intensive processes.
Potential Gain: Avoidance of penalties that can represent 20-30% of the bill.
Tariff Optimization
Principle: STEG rates vary by time of day. For MV customers, the time-of-use tariff offers different prices depending on the time period.
Action: Analyze your profile to choose the most suitable tariff and shift consumption to off-peak hours.
Potential Gain: Up to 15% savings on the consumption portion.
Current MV Rates (effective since 01/10/2022)
Power charge (Time-of-Use): 11,000 mill/kW/month = 11.000 TND/kW/month
Uniform Rate
Power charge (Uniform): 5,000 mill/kVA/month = 5.000 TND/kVA/month
Photovoltaic Self-generation
Principle: Install solar panels to reduce grid consumption. 70 MW have already been installed in MV/HV.
Action: Assess the solar potential of your rooftops and invest in self-generation.
Potential Gain: Bill reduction and payback in 5-7 years.
ANME: A Key Partner for Your Energy Transition
The National Agency for Energy Management (ANME) supports Tunisian companies in their energy transition:
- In-depth energy audits subsidized
- Support for ISO 50001 certification (Energy Management System)
- TEEP Program for public institutions: 30 MWc solar, 80 ktep/year energy savings
- PEEB COOL Program for energy efficiency in buildings
- For the Energy Efficiency component: Implementing energy rationalization actions in public institutions, achieving energy savings of around 80 ktep/year.
📊 Summary of Potential Gains 2026
The 5 Key Points to Reduce Your STEG Bill
How Wattnow Helps You Optimize Your STEG Bill
Our EMS (Energy Management System) platform gives you the visibility and control needed to activate all these levers, with proven results: 10 to 30% savings from the first year.
Real-time Visibility
Track your consumption live, identify your power peaks and anticipate overruns. Our dashboards alert you to act at the right time and optimize your subscribed power.
Consumption Profile Analysis
Visualize your load curves by time period, identify opportunities to shift to off-peak hours, and optimize your tariff choice (time-of-use vs. uniform).
Measurable ROI
Visualize the impact of your actions on your STEG bill. Our reports quantify your gains and facilitate the preparation of ANME subsidy applications. Average return on investment time: 8 to 14 months.
"Refining the analysis of electricity consumption is the best way to reduce it. With the Wattnow solution, we have become capable of tracking in real time the electricity consumption and CO2 emissions of the different equipment in our workshops. This monitoring allowed us to detect energy consumption anomalies and act in time."
— Ahmed Ghali, Energy Project Manager, Hutchinson Tunisia
"Thanks to Wattnow, we have successfully maintained our ISO 50001 certification and achieved significant energy savings in our facilities."
— Mohamed Chandoul, Maintenance Manager, CHIMI Industries
Frequently Asked Questions about STEG Optimization
Sources and References 2026
- Webmanagercenter - Electricity: 18,953 GWh produced in Tunisia, STEG ensures 95% of national production (January 2026)
- ANME - TEEP Program (Energy Transition in Public Establishments)
- La Presse - Energy Transition: The Presidential Option for Clean and Resilient Development (February 2026)
- La Presse - Renewable Energies: Energy Sovereignty in Sight (February 2026)
- STEG - Electricity Tariffs (updated 2022, applicable in 2026)
- Entreprises Magazine - Launch of the PEEB COOL Program (February 2026)
- ANME - National 2030 Targets: -30% primary demand, 35% RES, -45% carbon intensity
Last updated: February 2026. Electricity production data as of November 2025.
Estimate Your STEG Savings Potential
Discover how Wattnow can help you reduce your STEG bill by 10 to 30% from the first year. Our experts provide a personalized analysis of your optimization levers.
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