# What Are the Best Energy Providers in Portugal? (2026) > Compare the best electricity and gas suppliers in Portugal: cheapest tariffs, 100% green, and OMIE-indexed plans. By Jules de Bruin · URL: https://www.how-to-portugal.com/energy/providers 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. ## 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. G9 Energy ### G9 Energy +Vantagem Luz (fixa) 4.4The free market's cheapest kWh: 0,1348 EUR [Get this tariff](https://g9energy.pt)Price per kWhEUR 0.13Standing chargeEUR 164.18/year (EUR 0.45/day)Estimated annual costEUR 397.41Contractno contractPrice guarantee12 monthsPrices 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) 4.5EUR 0.1399 per kWh, among the cheapest with a permanent discount [Get this tariff](https://www.endesa.pt)Price per kWhEUR 0.14Standing chargeEUR 271.46/year (EUR 0.74/day)Estimated annual costEUR 439.99Contract12 monthsPrice guarantee12 monthsPrices 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 Goldenergy ### Goldenergy Digital (DD+FE) 4.3EUR 0.1399 per kWh on 100% renewable energy [Get this tariff](https://www.goldenergy.pt)Price per kWhEUR 0.14Standing chargeEUR 226.26/year (EUR 0.62/day)Estimated annual costEUR 444.63Contractno contractPrice guarantee12 monthsPrices 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) 4.1A kWh of 0,1269 EUR, the market's cheapest fixed rate [Get this tariff](https://descontoluz.acp.pt)Price per kWhEUR 0.13Standing chargeEUR 111.47/year (EUR 0.31/day)Estimated annual costEUR 412.84Contractno contractPrice guarantee12 monthsPrices 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) 4.0One of the cheapest 3.45 kVA capacity charges, EUR 0.2268 a day [Get this tariff](https://www.ibelectra.com)Price per kWhEUR 0.15Standing chargeEUR 82.78/year (EUR 0.23/day)Estimated annual costEUR 427.95Contractno contractPrice guarantee12 monthsPrices 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) 4.5EUR 0.1399 per kWh, among the cheapest with a permanent discount [Get this tariff](https://www.endesa.pt)Price per kWhEUR 0.14Standing chargeEUR 271.46/year (EUR 0.74/day)Estimated annual costEUR 439.99Contract12 monthsPrice guarantee12 monthsPrices 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) 4.4Cheapest kWh of any large-brand fixed tariff [Get this tariff](https://www.edp.pt/particulares/energia/tarifarios/)Price per kWhEUR 0.13Standing chargeEUR 135.23/year (EUR 0.37/day)Estimated annual costEUR 461Contract12 monthsPrice guarantee12 monthsPrices 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) 4.3100% green electricity with Guarantees of Origin [Get this tariff](https://www.edp.pt)Price per kWhEUR 0.14Standing chargeEUR 210.97/year (EUR 0.58/day)Estimated annual costEUR 436.95Contract12 monthsPrice guarantee12 monthsPrices 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 Goldenergy ### Goldenergy Digital (DD+FE) 4.3EUR 0.1399 per kWh on 100% renewable energy [Get this tariff](https://www.goldenergy.pt)Price per kWhEUR 0.14Standing chargeEUR 226.26/year (EUR 0.62/day)Estimated annual costEUR 444.63Contractno contractPrice guarantee12 monthsPrices 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) 3.7Beneficia automaticamente de descidas do OMIE [Get this tariff](https://www.edp.pt)Price per kWhEUR 0.17Standing chargen/aContract12 monthsPrice guaranteeno guaranteePrices 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 Endesa ### Endesa Tarifa Indexada 3.5Tracks wholesale falls automatically [Get this tariff](https://www.endesa.pt/particulares)Price per kWhEUR 0.18Standing chargeEUR 149.43/year (EUR 0.41/day)Contractno contractPrice guaranteeno guaranteePrices 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 3.0Captures wholesale price falls automatically [Get this tariff](https://www.goldenergy.pt/)Price per kWhEUR 0.22Standing chargeEUR 171.04/year (EUR 0.47/day)Contractno contractPrice guaranteeno guaranteePrices 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) 3.2Low daily power term among indexed offers [Get this tariff](https://eniplenitude.pt/)Price per kWhn/aStanding chargeEUR 143.66/year (EUR 0.39/day)Contractno contractPrice guaranteeno guaranteePrices 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 G9 Energy ### G9 Smart Dynamic 3.1True quarter-hourly wholesale pass-through [Get this tariff](https://www.g9.pt/)Price per kWhn/aStanding chargen/aContractno contractPrice guaranteeno guaranteePrices 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) 4.1The lowest daily standing charge on the market, EUR 0.1058 a day [Get this tariff](https://www.edp.pt)Price per kWhEUR 0.09Standing chargeEUR 38.62/year (EUR 0.11/day)Estimated annual costEUR 270.13Contractno contractPrice guarantee12 monthsPrices 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) 4.2Gas at EUR 0.0830 per kWh, among the cheapest on the market [Get this tariff](https://www.endesa.pt)Price per kWhEUR 0.11Standing chargeEUR 67.71/year (EUR 0.19/day)Estimated annual costEUR 310.67Contract12 monthsPrice guarantee12 monthsPrices 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. ## Related Guides [### Energy in Portugal Sector overview.](/energy)[### Electricity and gas How the market and bill work.](/energy/electricity-gas)[### Setting up utilities Steps to activate contracts.](/energy/setting-up-utilities)[### Price research Full tariff table.](/energy/providers-price-research) ## 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. --- Source: https://www.how-to-portugal.com/energy/providers Last updated: n/a Format: LLM-readable Markdown twin (.md) of the canonical HTML page.