Maldie
Maldie is a 4 MW small hydro scheme in Scotland, operated by RWE Npower. The UK government lists it as operational in its register of power stations (DUKES table 5.11, May 2025).
- Small Hydro
- Scotland
Key facts
- Installed capacity
- 4 MW
- Status
- Operational
- Technology
- Hydro Β· Small Hydro
- Operator
- RWE Npower
- Region
- Scotland
- Country
- Scotland
- Grid connection (DUKES)
- LV
- Combined heat & power
- No
- Coordinates
- 58.2603, -4.9819
Location
Map position from the published coordinates. For small sites this can be an approximate point rather than the exact boundary. Map Β© OpenStreetMap contributors.
How Maldie compares
At a typical UK load factor for this technology (about 35% of the maximum possible output), a 4 MW station would generate roughly 12 GWh of electricity in a year, similar to the annual use of about 4,540 homes at 2,700 kWh each. This is an illustrative estimate, not the station's metered output: real generation varies with weather, availability and grid constraints.
Hydroelectric stations generate electricity from water flowing downhill through turbines, either from a reservoir behind a dam or from a river (run-of-river). Most UK hydro capacity is in Scotland and Wales.
All UK hydro schemes and pumped-storage stations Hydro schemes and pumped-storage stations in Scotland All run by RWE NpowerNearby generating sites
- Duchally Power Station - A,C,E Β· 0.45 MW small hydro scheme21.9 km
- Lairg Power Station Β· 3.5 MW small hydro scheme30.4 km
- Loch Dubh Β· 1.2 MW small hydro scheme34.9 km
- Rosehall Β· 24.7 MW onshore wind farm39.0 km
- Cassley Power Station - A,C,E Β· 10 MW hydroelectric station39.3 km
- Achany Windfarm Β· 38 MW onshore wind farm40.3 km
- Lairg Β· 7.5 MW onshore wind farm46.9 km
- Shin Power Station-A,G Β· 18.6 MW hydroelectric station48.7 km
Also operated by RWE Npower
RWE Npower operates 90 sites in the register. Largest first:
- Pembroke Β· gas-fired power station2,199 MW
- Didcot A Power Station Β· coal-fired power station2,000 MW
- Staythorpe Β· CCGT gas power station1,828 MW
- Didcot B Β· gas-fired power station1,450 MW
- Tilbury B Power Station Β· coal-fired power station1,050 MW
- Triton Knoll Β· offshore wind farm857 MW
- Little Barford Β· CCGT gas power station735 MW
- London Array Β· offshore wind farm630 MW
Planning history
From the government's Renewable Energy Planning Database (REPD), matched to this site by location, capacity and name.
- Planning status
- Operational
- Site name in planning record
- Maldie Burn
- Developer / operator
- RWE npower
- Planning authority
- Highland
- Planning reference
- 09/00250/S36SU
- Application submitted
- 11 June 2009
- Permission granted
- 17 January 2011
- Construction started
- 16 May 2012
- Began operating
- 1 March 2014
- Capacity in planning record
- 4 MW
- Address
- Maldie Burn Near Kylesku NW Sutherland, Highland
- REPD reference
- 484
Source
Department for Energy Security and Net Zero (DESNZ), Digest of UK Energy Statistics (DUKES), table 5.11: power stations in the United Kingdom β operational at end of May 2025.
Capacity is installed capacity as published, not current output. Status reflects the source date, not live operation.
View the original source
Last checked by Octary: 15 July 2026
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