Your energy bills contain errors. We get the money back.

The audit is 100% free. Our model is purely success-based:

• Zero upfront fees, zero subscription, zero hidden costs
• Commission only on amounts actually recovered
• If no anomaly is found — you pay nothing
• Fewer than 15% of audited portfolios show no errors

Our commission depends on the size of your portfolio

   and the type of anomalies detected. It is discussed during the

  initial consultation and contractualized before the audit begins. In

  all cases: if we don't recover anything, you don't pay anything.

The statute of limitations varies by anomaly type:

• Billing errors (readings, power, tariff options) → 5 years (Article L.110-4, Commercial Code)
• Overpaid taxes (electricity/gas excise) → 2 calendar years with the SIE (Article L.190, Tax Procedures Code)
• TURPE errors → 2 years with Enedis

We analyze each lever separately to maximize the recoverable amount.

Less than 30 minutes on your end. Here's how it works:

• Send us your invoices (PDF, supplier portal access, or accounting export)
• Our algorithms cross-reference your data with TURPE schedules (CRE) and excise rates (DGDDI)
• Full analysis in 48 to 72 hours
• Our experts draft the claims and follow through until refund

We audit all suppliers on the French market:

• Incumbent: EDF, Engie
• Alternative: TotalEnergies, Eni, Vattenfall, Alpiq, Gazel Energie, Iberdrola, Ekwateur, Mint Energie, OHM Énergie…
• 40+ suppliers in our tariff database
• Segments C1 to C5 (electricity) and T1 to T4 (gas)
• Compatible with regulated tariffs (TRVE), fixed and indexed offers

Virtually impossible to detect without specialized tools. A professional bill contains 15 to 20 distinct lines:

• TURPE components, time-of-use rates (Peak/HPH/HPB/HCH/HCB)
• Excise duty, CTA, VAT at different rates (5.5% and 20%)
• Technical parameters: C1-C5 segment, TURPE version, power per time band

85% of portfolios audited reveal at least one anomaly → average recovery: 4 to 8% of annual bill.

Your data benefits from maximum protection:

• AES-256 encryption in transit and at rest (banking standard)
• Servers hosted in France (ISO 27001 certified datacenters)
• Full GDPR compliance — data never resold or shared
• Enhanced confidentiality agreements for all team members
• Right to request complete data deletion at any time

The 5 anomalies we detect most frequently:

• Oversized subscribed power — average 12% overcharge on fixed costs
• Full-rate taxes (excise at €22.50/MWh) when eligible for reduced rate (€0.50/MWh, Art. 266 quinquies C, Customs Code)
• Estimated readings creating unreconciled consumption gaps
• Wrong TURPE tariff version (e.g., billed as long-use instead of medium-use)
• Undetected power overruns — up to €12.65/kW per hour in C4 segment

unisave detects these anomalies automatically and handles all claims from start to finish.

Subscribed power (kVA/kW) directly impacts two major cost items:

• Supplier subscription — proportional to power level
• TURPE — annual fixed premium per kW subscribed

In C4 segment, this premium ranges from €6.24/kW/year (off-peak) to €56.40/kW/year (peak). A site with 200 kW over-subscribed overpays €1,248 to €11,280/year.

Our analysis of your 10-min interval load curve (Enedis R15/C15 data) identifies optimal power per time band.

Your bill includes multiple tax layers:

• Electricity excise (ex-CSPE) → €30.85/MWh since Feb 2025 (+550% vs Covid rate)
• CTA → ~15% of fixed distribution network charge
• Gas excise (ex-TICGN) → €16.39/MWh
• VAT → 5.5% on subscription & CTA / 20% on consumption & taxes

Some businesses qualify for reduced rates (electro-intensive, metallurgical, chemical processes) — 70% of eligible companies never claim them. unisave systematically checks your eligibility.