Ubol Ratana Dam
Northeastern Thailand Region
Ubol Ratana Dam, located about 50 km north of Khon Kaen in Thailand's northeastern region, is a significant earth core rockfill dam constructed in 1964. It was the first hydroelectric power project developed in the Isan area and serves multiple purposes including electricity generation, irrigation, flood control, transportation, fisheries, and tourism. The dam impounds the Nam Phong River, which eventually feeds into the Mekong River system. Measuring 885 meters in length and 32 meters in height, it has a reservoir capacity of over two billion cubic meters. Managed by the Electricity Generating Authority of Thailand (EGAT), the dam's power plant operates three turbines with a combined capacity of 25.2 MW, generating approximately 57 GWh annually. In 2024, Ubol Ratana Dam integrated a 24 MW floating solar photovoltaic array along with a battery electric storage system to optimize energy production. The dam also has a complex social and environmental history, including the resettlement of 30,000 people and challenges related to drought and reservoir depletion. Its scenic reservoir and surrounding area attract tourists, making it a notable landmark in northeastern Thailand.
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Astuce: The best time to visit Ubol Ratana Dam is during the cooler dry season to enjoy pleasant weather and scenic views. Visitors should check local conditions and water levels, as droughts can affect the reservoir's appearance. Booking guided tours in advance is recommended to gain deeper insights into its history and operations. While entry is generally free, some activities or boat tours may offer discounts for groups or children.
Faits intéressants
- •Ubol Ratana Dam was originally called Phong Neeb Dam before being renamed in 1966 to honor Princess Ubol Ratana.
- •It was the first hydroelectric power project in Thailand's northeastern Isan region.
- •The dam's reservoir required the resettlement of 30,000 people, significantly impacting local communities.
- •In 2016, the dam ran dry for the first time since its construction, highlighting severe drought conditions.
- •A 24 MW floating solar PV array was added in 2024, enhancing its renewable energy capacity.
Histoire
Constructed in 1964, Ubol Ratana Dam was the first hydroelectric project in northeastern Thailand, marking a milestone in regional development.
It was renamed in 1966 in honor of Princess Ubol Ratana by royal permission.
In 1984, safety reinforcements and flood protection measures were added.
The dam has faced environmental challenges, notably running dry in 2016 due to prolonged drought, impacting its ability to generate power and provide irrigation.
Recently, modern renewable energy adaptations, including floating solar panels and battery storage, were incorporated to enhance sustainability.
Guide du lieu
Dam Structure and Reservoir1964
The dam is an earth core rockfill type, 885 meters long and 32 meters high, creating a reservoir with a storage capacity exceeding two billion cubic meters. Visitors can observe the impressive engineering and the vast water body supporting local ecosystems and agriculture.
Hydroelectric Power Plant1966-1969
Featuring three turbines each with an 8,400 kW capacity, the plant generates an average of 57 GWh annually. The turbines began operation between 1966 and 1969, playing a key role in regional electricity supply.
Floating Solar PV Array and Battery Storage2024
Installed in 2024, this 24 MW solar array with approximately 48,000 panels and a 6 MWh battery storage system allows solar power generation during daylight, reserving hydroelectric power primarily for nighttime, improving energy efficiency and sustainability.