What Are the Best Energy Providers in Portugal? (2026)
Updated August 2026. The cheapest suppliers for a 1,900 kWh/year profile are G9 Energy, Endesa Digital, and Goldenergy Digital. For 100% renewable energy, Coopérnico, Endesa Digital, and EDP Comercial Verde stand out. If you prefer wholesale market pricing, choose tariffs indexed to OMIE. All prices are from August 2026 and require a NIF and IBAN.
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Which suppliers are the cheapest?
The cheapest fixed tariffs for a typical apartment profile are from G9 Energy, Endesa Digital, and Goldenergy Digital. The saving against the regulated tariff can exceed EUR 50 per year.
- Price per kWh
- EUR 0.13
- Standing charge
- EUR 164.18/year (EUR 0.45/day)
- Estimated annual cost
- EUR 397.41
- Contract
- no contract
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- 3.45 kVA capacity at EUR 0.2244 a day, among the lowest
- No lock-in
- Also sells natural gas on the same bill
Cons
- A small brand with support only on working days
- The discount requires electronic billing
- Support and bills in Portuguese only
Endesa
Endesa Tarifa Digital Luz (100% verde)
EUR 0.1399 per kWh, among the cheapest with a permanent discount
Get this tariff- Price per kWh
- EUR 0.14
- Standing charge
- EUR 271.46/year (EUR 0.74/day)
- Estimated annual cost
- EUR 439.99
- Contract
- 12 months
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- Certified 100% renewable electricity
- No lock-in and no compulsory direct debit
- A 20% discount for as long as you stay, not a promotion
Cons
- Sign-up and account management are online only
- An above-average capacity charge, EUR 0.3079 a day at 3.45 kVA
- Customer support is mostly in Portuguese
- Price per kWh
- EUR 0.14
- Standing charge
- EUR 226.26/year (EUR 0.62/day)
- Estimated annual cost
- EUR 444.63
- Contract
- no contract
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- The natural gas standing charge is waived
- No lock-in
- A Portuguese company with award-winning customer support
Cons
- The full discount requires direct debit and electronic billing
- The price is reviewed once a year, usually in January
- Support in Portuguese only
Goldenergy
ACP-Goldenergy Tarifa ACP+, ACP members only (Portugal)
A kWh of 0,1269 EUR, the market's cheapest fixed rate
Get this tariff- Price per kWh
- EUR 0.13
- Standing charge
- EUR 111.47/year (EUR 0.31/day)
- Estimated annual cost
- EUR 412.84
- Contract
- no contract
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- Electricity 100% from renewable sources
- Needs neither direct debit nor electronic billing
- An off-peak rate of 0,0799 EUR/kWh for electric vehicles
Cons
- ACP membership from EUR 58.80 a year wipes out the saving at low consumption
- Open only to Automóvel Club de Portugal members
- Plus 0,0020666 EUR/kWh funding the social tariff
Ibelectra
Ibelectra Solução Segura, direct debit and e-billing (Portugal)
One of the cheapest 3.45 kVA capacity charges, EUR 0.2268 a day
Get this tariff- Price per kWh
- EUR 0.15
- Standing charge
- EUR 82.78/year (EUR 0.23/day)
- Estimated annual cost
- EUR 427.95
- Contract
- no contract
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- Consistently among the 5 cheapest annual bills
- Available with and without direct debit
- An indexed Solução Família tariff exists
Cons
- The discount depends on direct debit and electronic billing
- Does not sell natural gas
- A small brand with support in Portuguese only
Which suppliers are the greenest?
Green tariffs use Guarantees of Origin to certify 100% renewable electricity. Coopérnico is a non-profit cooperative, while Endesa Digital and EDP Comercial Verde combine competitive pricing with renewable origin.
Endesa
Endesa Tarifa Digital Luz (100% verde)
EUR 0.1399 per kWh, among the cheapest with a permanent discount
Get this tariff- Price per kWh
- EUR 0.14
- Standing charge
- EUR 271.46/year (EUR 0.74/day)
- Estimated annual cost
- EUR 439.99
- Contract
- 12 months
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- Certified 100% renewable electricity
- No lock-in and no compulsory direct debit
- A 20% discount for as long as you stay, not a promotion
Cons
- Sign-up and account management are online only
- An above-average capacity charge, EUR 0.3079 a day at 3.45 kVA
- Customer support is mostly in Portuguese
EDP Comercial
EDP E-Digital (online-only fixed tariff)
Cheapest kWh of any large-brand fixed tariff
Get this tariff- Price per kWh
- EUR 0.13
- Standing charge
- EUR 135.23/year (EUR 0.37/day)
- Estimated annual cost
- EUR 461
- Contract
- 12 months
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- Same EDP billing and app infrastructure
- 100% renewable energy
Cons
- Online-only: phone support claims not to know this tariff
- Power term rose sharply after promo period (0.2321 to 0.3705 EUR/day)
- Price moves every few months; re-check before publishing
EDP Comercial
EDP Comercial Green Electricity, 15% consumption discount (Portugal)
100% green electricity with Guarantees of Origin
Get this tariff- Price per kWh
- EUR 0.14
- Standing charge
- EUR 210.97/year (EUR 0.58/day)
- Estimated annual cost
- EUR 436.95
- Contract
- 12 months
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- The largest support and store network in the country
- BP fuel discounts that stack
- Natural gas available on the same bill (0,0905 EUR/kWh)
Cons
- The discount requires direct debit and electronic billing
- Without the discount the base price rises to EUR 0.1671 per kWh
- Promotions end and renew at the full price
- Price per kWh
- EUR 0.14
- Standing charge
- EUR 226.26/year (EUR 0.62/day)
- Estimated annual cost
- EUR 444.63
- Contract
- no contract
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- The natural gas standing charge is waived
- No lock-in
- A Portuguese company with award-winning customer support
Cons
- The full discount requires direct debit and electronic billing
- The price is reviewed once a year, usually in January
- Support in Portuguese only
Which tariffs are indexed?
Indexed tariffs follow the OMIE wholesale market price. EDP Comercial and Yes Energy offer this product type. They suit users who track the market and accept monthly bill variation.
EDP Comercial
EDP Comercial Eletricidade Indexada (OMIE)
Beneficia automaticamente de descidas do OMIE
Get this tariff- Price per kWh
- EUR 0.17
- Standing charge
- n/a
- Contract
- 12 months
- Price guarantee
- no guarantee
Prices as of August 2026, verify on the provider site.
Pros
- No lock-in, and you can switch whenever you like
- A lower capacity charge than EDP's fixed tariff
- Full transparency of the indexation formula
Cons
- The bill rises if the wholesale market rises
- No price guarantee, so the budget is unpredictable
- You have to check the applied price every month
- Price per kWh
- EUR 0.18
- Standing charge
- EUR 149.43/year (EUR 0.41/day)
- Contract
- no contract
- Price guarantee
- no guarantee
Prices as of August 2026, verify on the provider site.
Pros
- No loyalty period
- Low power term versus Endesa fixed tariffs
Cons
- Monthly kWh reprices with OMIE; spikes possible
- Snapshot price above best fixed offers in mid-2026
- Not a green-certified tariff
Goldenergy
Goldenergy Index Eletricidade
Captures wholesale price falls automatically
Get this tariff- Price per kWh
- EUR 0.22
- Standing charge
- EUR 171.04/year (EUR 0.47/day)
- Contract
- no contract
- Price guarantee
- no guarantee
Prices as of August 2026, verify on the provider site.
Pros
- No lock-in
- 100% renewable
Cons
- May 2026 snapshot far above same-brand fixed tariffs
- Monthly repricing creates bill unpredictability
- Portuguese-only support
Plenitude
Plenitude Tarifa Tendência (indexed)
Low daily power term among indexed offers
Get this tariff- Price per kWh
- n/a
- Standing charge
- EUR 143.66/year (EUR 0.39/day)
- Contract
- no contract
- Price guarantee
- no guarantee
Prices as of August 2026, verify on the provider site.
Pros
- Transparent OMIE formula published
- No lock-in
Cons
- Provider-wide complaint record applies
- Monthly repricing with wholesale market
- Formula complexity hard for lay readers
- Price per kWh
- n/a
- Standing charge
- n/a
- Contract
- no contract
- Price guarantee
- no guarantee
Prices as of August 2026, verify on the provider site.
Pros
- Very low 0.0055 EUR/kWh retail spread
- Rewards consumption shifted to sunny/windy hours
Cons
- Bills can exceed 0.20-0.30 EUR/kWh in evening peaks
- Mandatory smart meter and 15-minute profiling
- Zero budget predictability
Which suppliers are best for gas?
The regulated gas market ended in 2025. For 2,000 kWh/year, the cheapest options in August 2026 are from EDP Comercial and Endesa Digital, both with permanent discounts.
EDP Comercial
EDP Comercial Natural Gas, direct debit and e-billing (Portugal)
The lowest daily standing charge on the market, EUR 0.1058 a day
Get this tariff- Price per kWh
- EUR 0.09
- Standing charge
- EUR 38.62/year (EUR 0.11/day)
- Estimated annual cost
- EUR 270.13
- Contract
- no contract
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- One of the cheapest annual gas bills in band 2
- Stacks with the 15% electricity discount
- No lock-in
Cons
- The discount requires direct debit and electronic billing
- Only available where there is a natural gas network
- The price is reviewed once a year
Endesa
Endesa Tarifa Digital Gas, band 2 (Portugal)
Gas at EUR 0.0830 per kWh, among the cheapest on the market
Get this tariff- Price per kWh
- EUR 0.11
- Standing charge
- EUR 67.71/year (EUR 0.19/day)
- Estimated annual cost
- EUR 310.67
- Contract
- 12 months
- Price guarantee
- 12 months
Prices as of August 2026, verify on the provider site.
Pros
- A 20% discount for as long as you stay, not a promotion
- One bill when you add electricity
- No lock-in
Cons
- Only available where there is a natural gas network
- The regulated gas market ended on 31-12-2025
- The daily standing charge bites at very low consumption
How do you choose a supplier?
First compare the estimated annual cost in the ERSE simulator for your CPE. Then check the price-guarantee length, discount conditions (direct debit and electronic billing), customer support, and energy origin.
If you are newly arrived, prefer suppliers with English support or simple online signup. If you drive and refuel with a specific brand, cross-discounts from Galp, Repsol, or BP may pay off.
Frequently Asked Questions
Which electricity supplier is cheapest?
For a 1,900 kWh/year, 3.45 kVA profile, the cheapest tariffs in August 2026 are from G9 Energy, Endesa Digital, and Goldenergy Digital.
Is the indexed tariff worth it?
Only if you track the wholesale market and can tolerate volatility. In 2022 and 2023, indexed tariffs far exceeded fixed tariffs.
Is EDP Comercial the same as E-Redes?
No. EDP Comercial is a retail supplier in the EDP group. E-Redes manages electricity distribution on the mainland.