Lower your STEG bill without sacrificing comfort
Consuming, buying and paying are different things. Discover ways to lower your STEG bill with a suitable solar project.
Read the guide →Understand solar.
Plan your project.
Practical explanations, detailed calculations and charts to help you make informed decisions.
12 articles to help plan your project
Does your café have to close every time the power goes out?
Till, lighting, refrigeration or coffee machine: choose which equipment needs backup and plan suitable runtime for your shop in Tunisia.
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Solar batteries in Tunisia: what STEG provides for in 2026
Residential storage, lithium or lead-acid batteries and hybrid inverters: the 2026 STEG documents to check when planning your installation.
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Solar panels and STEG outages: how do you plan backup power?
Panels alone, battery and backup output: understand what stays powered during an outage and plan your home or shop's needs.
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Gel or LiFePO4 lithium battery: compare usable energy
Compare gel and LiFePO4 lithium for solar storage: usable energy, power, cycles, compatibility and cost of delivered service.
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How long does a 5 kWh battery last?
Calculate the indicative runtime of a 5 kWh battery based on appliances, reserve, losses and the backup power actually available.
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Can you add a battery to an existing solar installation?
Can your installation take a battery? Compare system architectures, compatibility, backup functionality and STEG checks.
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What does a power outage really cost your business?
Deferred sales, margin, stock and restart: estimate an outage's cost to compare backup solutions for your business in Tunisia.
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Fridges, display cases and freezers: what backup does your shop need?
Size backup power for commercial refrigeration: consumption, compressor start-up, runtime, recharging and temperature monitoring.
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Battery, generator or UPS: which is right for a shop?
Compare batteries, generators and UPS systems according to your appliances, outage duration and continuity needs. Plan a study for your business.
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Read your STEG bill before sizing solar
Electricity, gas, period, instalments: identify what matters for planning your system, then have your bill checked.
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Business photovoltaics: compare cash and loans over 20 years
A 30 kWc example in Sfax, two financing methods and charts to understand what remains available year after year.
Read the worked example →What about your own installation?
Your bill and usage help turn these examples into a study tailored to your home or business.
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