Portugal · island electricity system · AzoresAzores – total
Nine isolated power systems run by EDA, with no cable between them or to the mainland. Figures are annual, from official ERSE and EDA documents; the total is the sum of the islands.
Latest official data Real-time electricity data is not currently published through a verified public source. The values shown are the latest available official data.
| By source | MWh | share |
|---|---|---|
| Thermal (fuel oil, diesel) | 458,477 | 59.6 % |
| Geothermal | 193,190 | 25.1 % |
| Hydro | 30,189 | 3.9 % |
| Wind | 71,573 | 9.3 % |
| Solar PV | 1,827 | 0.2 % |
| Waste (CVE) | 13,651 | 1.8 % |
| Biogas | 320 | 0.0 % |
Reporting period: 2020 [source]
| 2019 | 2020 | 2021 | 2022 | 2023 | |
|---|---|---|---|---|---|
| Energy delivered to the grid | 793.5 | 769.2 | 808.5 | 823.1 | 835.7 |
Billed consumption per island is not published: EDA gives it only for the region. Energy delivered to the grid is consumption plus losses, from EDA's management report. We do not estimate them.
Reporting period: 2023 · 2019–2023 [source]
No cable links the islands to each other or to the mainland: each one generates everything it uses. Click an island to open its page.
Actual, at 2020-12
| Thermal (fuel oil, diesel) | 216.4 |
| Geothermal | 34.3 |
| Hydro | 8.4 |
| Wind | 36.7 |
| Solar PV | 1.0 |
| Waste (CVE) | 2.6 |
| Biogas | 1.1 |
| Total | 300.5 |
Reporting period: 2020-12 [source]
Planned for 2024-12: investment plan, NOT achieved
| Thermal (fuel oil, diesel) | 228.0 |
| Geothermal | 34.3 |
| Hydro | 8.4 |
| Wind | 45.3 |
| Solar PV | 13.0 |
| Waste (CVE) | 2.6 |
| Biogas | 1.1 |
| Total | 332.6 |
Reporting period: 2024-12 · forecast [source]
Capacity at generator level in EDA's plants. The right-hand column is the 2022–2024 investment plan as approved; it does not say what was built.
Continuity indicators from the annex of EDA's annual quality-of-service report, by quality zone (A = large towns, B = medium, C = rural). An island with several zones has no single published indicator; 2025 includes exceptional events.
SAIFI: interruptions per customer per year
| 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Zone A | 2.7 | 3.9 | 3.9 | 2.2 | 2.6 |
| Zone B | 11.5 | 9.1 | 6.4 | 5.6 | 7.2 |
| Zone C | 19.8 | 13.3 | 14.2 | 12.7 | 13.9 |
SAIDI: time without supply per customer per year (h:mm)
| 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Zone A | 0:29 | 0:56 | 1:25 | 0:17 | 0:47 |
| Zone B | 1:15 | 1:49 | 1:15 | 0:36 | 2:08 |
| Zone C | 4:15 | 3:48 | 3:23 | 2:27 | 3:14 |
Number of customer interruptions (all causes)
| 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Customer interruptions | 1,592,320 | 1,115,307 | 1,164,727 | 1,007,207 | 1,123,240 |
Reporting period: 2025 · years 2021–2025 [source]
Contracted power (€/day)
| 3.45 kVA | 0.1929 |
| 4.6 kVA | 0.2520 |
| 5.75 kVA | 0.3083 |
| 6.9 kVA | 0.3665 |
| 10.35 kVA | 0.5394 |
| 13.8 kVA | 0.7122 |
| 17.25 kVA | 0.8832 |
| 20.7 kVA | 1.0636 |
ERSE prices for normal low-voltage customers (>2.3 and ≤20.7 kVA), before VAT, the same on all nine islands. Not a spot, wholesale or day-ahead price: the Azores have no electricity market.
Reporting period: 2026 [source]
Every figure on this page comes from one of the documents below. The worker checks them daily (plans, reports) and weekly (tariffs); if a document changes or does not respond, the values here stay the last validated ones.
- ERSE/EDA — Plano de Desenvolvimento e Investimento das Redes de Transporte e Distribuição da RAA 2022–2024retrieved 19/09/2026, 00:00:00 · last verified 18/10/2026, 09:23:25 · checked daily
- EDA — Relatório da Qualidade de Serviço 2025, Anexo III (indicadores de continuidade, BT)retrieved 19/09/2026, 00:00:00 · last verified 18/10/2026, 09:23:25 · checked daily
- EDA — Relatório de Gestão 2023 (Contas e Sustentabilidade)retrieved 19/09/2026, 00:00:00 · last verified 18/10/2026, 11:23:26 · checked daily
- ERSE — Tarifas e preços para a energia elétrica e outros serviços em 2026retrieved 19/09/2026, 00:00:00 · last verified 17/10/2026, 07:23:21 · checked weekly
Checked on 19 Sep 2026: the EDA website exposes no public endpoint (JSON, CSV, XLSX or API) with generation or consumption; its pages are rendered in the browser, without data. That is why there is no 15-minute cycle: there is nothing to read.