Dassieklip — South Africa

Dassieklip is a 27 MW wind power plant in Western Cape, South Africa. It is operated by BioTherm Energy. Based on its capacity (estimated), it can supply roughly 23k homes (estimated). It ranks #117 of 152 South Africa power plants by installed capacity. Commissioned in 2014, it is around 12 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 4.7% of South Africa's electricity; the national grid averages 699 gCO₂/kWh (17.8% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1026021.

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000900007; fuel: WRI GPPD

In context: how this plant compares

At 27 MW, Dassieklip is below the median wind plant in South Africa (94 MW). Technically it is described as Onshore. Wind turbines convert moving air into electricity; output is variable and site-dependent, and modern turbines deliver some of the lowest-cost new generation on many grids.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Key facts

Share of South Africa wind capacity

1.3% of 2,029 MW across 24 plants in this dataset

Age among peers

2 of 24 dated wind plants in South Africa are older

Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).

Capacity vs largest wind plants in South Africa

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by BioTherm Energy.

Local climate & thermal context

This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Southern Hemisphere, latitude 34.2°S — which shapes how much energy it can produce and how its output varies through the year.

Monthly mean temperature

Heating degree-days here run 61% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 26/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

Site climate & environmental severity

This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #20 largest wind power plant of 24 in South Africa by capacity.

South Africa has 24 wind power plants in this dataset, together about 2,029 MW of capacity.

Nearby power plants

• Palmiet · Hydro · 400 MW · Western Cape
• Acacia · Gas · 171 MW · Western Cape
• Touwsrivier Solar Power Plant · Solar · 44 MW · Western Cape
• Koeberg · Nuclear · 1,940 MW · Western Cape
• Ankerlig · Oil · 1,338.3 MW · Western Cape
• Gouda Wind Farm · Wind · 138 MW · Western Cape

Location

Coordinates -34.227, 19.3727 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions