Som Energia vs Energía XXI
Live Comparison • July 2026
A detailed head-to-head comparison covering rates, typical bills, pros & cons, and features to help you decide which is better for your home.
Our Verdict
Overall Winner: Lowest Typical Bill
Not enough tariff data available to calculate a typical monthly bill comparison.
Best Flat Rate
Neither provider currently offers a 24-hour flat rate.
Best Time-of-Use Rate
Neither provider currently offers a fixed time-of-use rate.
Scorecard Comparison
| Metric (1-10) | Som Energia | Energía XXI |
|---|---|---|
| Price Competitiveness | 7 | 5 |
| Solar Suitability | 9 | 3 |
| EV Suitability | 7 | 3 |
| Simplicity | 8 | 2 |
| Customer Service | 9 | 4 |
| Transparency | 10 | 2 |
Full Head-to-Head Comparison
Som Energia
4.5 / 5 (Local / Coop reviews)
Founded2010
Customers85,000+ members
Energy100% Renewable (Cooperative)
Pros
- 100% Community-owned and non-profit
- Total transparency in pricing and management
- Excellent democratic participation
- Invests directly in new Spanish renewable plants
Cons
- Requires a €100 initial membership fee (refundable)
- Tariffs can be slightly higher than the most aggressive market 'teaser' rates
- No massive marketing budgets or complex cross-sell offers
Available Tariffs
No active tariffs found.
Energía XXI
1.2 / 5 (3,000+ reviews)
Founded2019
Customers3,000,000+
EnergyMixed (Regulated Market)
Pros
- Access to the Bono Social (government discounts)
- Official regulated prices (PVPC)
- Stability of a large utility group
Cons
- Poor billing transparency
- Hidden unit prices (clumped with tolls)
- No fixed-price security (prices change every hour)
- Low customer satisfaction scores
Available Tariffs
No active tariffs found.
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