UMIAM I II &IV is a 96 MW hydro power plant in Meghalaya, India. It is operated by Meghalaya Power Generation CORP LTD (MePGCL) [100%]. Based on reported annual generation of 250 GWh, it can supply roughly 72k homes. It ranks #895 of 2,225 India power plants by installed capacity. Commissioned in 1980, it is around 46 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 8.6% of India's electricity; the national grid averages 670 gCO₂/kWh (26.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id IND0000477.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Capacity provenance
The public capacity above is the current source-record value. A 2026 tracker candidate lists 36 MW for Umiam I hydroelectric plant, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 96 MW, UMIAM I II &IV is well above the median hydro plant in India (80 MW). Technically it is described as conventional storage. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Load factor
- 30%, from 250 GWh of reported generation; the median for 173 hydro plants in India that report generation is 35%
- Generation trend
- 252 GWh in 2014 and 250 GWh in 2018 (−1%)
- Highest and lowest year
- 2017: 344 GWh; 2018: 250 GWh
- Share of India hydro capacity
- 0.2% of 45,527 MW across 233 plants in this dataset
- Age among peers
- 69 of 233 dated hydro plants in India are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Meghalaya Power Generation CORP LTD (MePGCL) [100%].
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 25.7°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 71% 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: 23/100 — 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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), 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 #111 largest hydro power plant of 233 in India by capacity.
India has 233 hydro power plants in this dataset, together about 45,527 MW of capacity.
Nearby power plants
- KYREDEMKULAI · Hydro · 60 MW · Meghalaya
- UMTRU (NEW) · Hydro · 11.2 MW · Meghalaya
- NEW UMTRU · Hydro · 40 MW · Meghalaya
- MYNTDU · Hydro · 126 MW · Assam
- Chandrapur (Assam) power station · Coal · 60 MW · Assam
- Naitor power station · Coal · 1,320 MW · Assam
Location
Coordinates 25.6593, 91.9003 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is UMIAM I II &IV?
UMIAM I II &IV is a 96 MW hydro power plant in Meghalaya, India, commissioned in 1980.
How much electricity does UMIAM I II &IV generate?
UMIAM I II &IV generates about 250 GWh of electricity per year.
Who operates UMIAM I II &IV?
UMIAM I II &IV is operated by Meghalaya Power Generation CORP LTD (MePGCL) [100%].