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54.9 MW Hydro operating in Llano, TX — Electric Reliability Council of Texas, Inc.
54.9 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1938
Operating Since
Coordinates
30.7507, -98.4176
County
Llano, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Lower Colorado River Authority | Lower Colorado River Authority | — |
| Owner(s) | Lower Colorado River Authority | Lower Colorado River Authority | — |
| Status | Operating | operating | — |
Buchanan Dam is a hydroelectric power plant located in Llano County, Texas. The plant has a total capacity of 54.9 MW derived from three generators using conventional hydroelectric technology. It is owned and operated by the Lower Colorado River Authority. Buchanan Dam began operating in 1938 and utilizes water (WAT) as its primary fuel source. The plant is within the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority.
In the most recent year with available data, Buchanan Dam generated 17,098 MWh of electricity, achieving a capacity factor of 3.5%. Buchanan Dam ranks as the 5th largest hydroelectric plant out of 24 in Texas, and 287th out of 1464 nationally. The plant is located within the TRE NERC region.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
Electric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Electric Utility
2.1K MWh
Latest Month
17.1K MWh
Annual Generation
3.5%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $126.0M
Point of Interconnection
Nearest Substation
Buchanan Substation · 69 kV
Substation Distance
0 km
Operator
Lower Colorado River Authority
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
BUCHAN_ALL
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
Last updated 2026-03-26
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