
赫德岛和麦克唐纳群岛(英语:Heard Island and McDonald Islands,:HIMI),无人居住的荒岛,1947年起纳入,1997年获选为()。赫德岛以南约1600公里达边沿;除去南极洲和小于1000平公方公里的岛屿不算,赫德岛方圆3700公里内都是海洋,不见。赫德岛80%的陆地都为冰川覆盖,岛上拥有比较稀少. . The Territory of Heard Island and McDonald Islands (HIMI; region code: HMD, HM, 334; ) is an Australian comprising a of mostly barren islands, about two-thirds of the way from to . The group's overall land area is 372 km (144 sq mi) and it has 101.9 km (63 mi) of coastline. Discovered in the mid-19th century, t. [pdf]
The islands are a territory (Territory of Heard Island and McDonald Islands) of Australia administered from Hobart by the Australian Antarctic Division of the Australian Department of Climate Change, Energy, the Environment and Water.
The group's overall land area is 372 km 2 (144 sq mi) and it has 101.9 km (63 mi) of coastline. Discovered in the mid-19th century, the islands lie on the Kerguelen Plateau in the Indian Ocean and have been an Australian territory since 1947. Heard Island and McDonald Islands contain Australia's only two active volcanoes.
Heard Island and the McDonald Islands have no ports or harbours; ships must anchor offshore. The coastline is 101.9 km (63.3 mi) in extent, and a 12 nmi (22 km) territorial sea and 200 nmi (370 km) exclusive fishing zone are claimed. [ 2 ]
The fauna of the freshwater pools, lakes, streams and mires found in the coastal areas of Heard Island are broadly similar to those on other subantarctic islands of the southern Indian Ocean. Many species reported from Heard Island are found elsewhere.
Heard Island supports a relatively low number of terrestrial invertebrate species compared to other Southern Ocean islands, in parallel with the low species richness in the flora–that is, the island's isolation and limited ice-free area.
His wife Fidelia Heard provided the first written description and drawings of the island. [ 12 ][ 13 ] William McDonald aboard the Samarang discovered the nearby McDonald Islands six weeks later, on 4 January 1854. [ 11 ]

The 2023-2024 Ecuador electricity crisis was caused by a severe that depleted water levels at plants and a lack of capacity buildup. experienced for up to 14 hours per day in the fall crisis (started on 23 September 2024 ) of 2024. Researches describe fall 2023 (27 October–18 December 2023) and spring 2024 (16–30 April 2024) crises as separate events. The had announced on 10 December, 202. [pdf]

Formal electricity services are solely provided by the state-owned Liberia Electricity Corporation, which operates a small grid almost exclusively in the . The vast majority of electric energy services is provided by small privately owned . At $0.54 per kWh, the in Liberia is among the highest in the world. Total installed capacity in 2013 was 20 MW, a sharp decline from a peak of 191 MW in 1989. [pdf]
As exemplified by Liberia's import initiatives, regional energy cooperation should be considered to bolster energy reliability. Engineers are advised to optimize energy mixes, incorporating wind, biomass, and solar energy into existing grids, and developing mini-grid initiatives for rural areas to address energy access challenges.
3.2. Imported electricity Liberia imports electricity from neighboring Côte d’Ivoire and Guinea through the West African Power Pool (WAPP) interconnection , which involved 650 km of 225 kV transmission lines , with a transit capacity of ≤290 MW – making it the largest source of imported electricity for the country in 2020.
Additionally, adopting off-grid and mini-grid solutions presents another opportunity for energy access in Liberia . Given the challenges of extending the central grid to remote areas, off-grid and mini-grid systems offer cost-effective alternatives. Some of the energy sources utilized in Liberia are summarized in Table 3. Table 3.
In addition, the government signed a Power Purchase Agreement with a solar energy company to provide the country ≥20 MW of electricity in 2020 . Despite these efforts, much work remains to be done to improve access to reliable and affordable energy in Liberia.
Formal electricity services are solely provided by the state-owned Liberia Electricity Corporation, which operates a small grid almost exclusively in the Greater Monrovia District. The vast majority of electric energy services is provided by small privately owned generators.
Liberia also has abundant biomass resources, with estimates suggesting that the government can produce up to 27,452 GWh of electricity from biomass annually . Expanding these resources can provide sustainable and decentralized energy solutions, particularly in rural and remote areas.
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