HEP
- Created by: wardk
- Created on: 09-10-17 10:47
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- HEP
- Energy Density
- Quite high compared to solar, wind & wave
- The amount of energy that can be harnessed depends on the volume of water & the velocity of its flow
- Technology
- High Head
- Low Head
- Run of River schemes
- Availability, Reliability & Intermittency
- reliable as water can be held back, however droughts can be a huge problem
- Economics & Trade
- HEP on one part of a river can have negative impacts to land/people downstream e.g Aral Sea
- construction is expensive & takes a long time
- Low cost operation
- Environmental Impacts
- visual problems
- valley flooding causes habitat loss
- land conflicts
- Extraction of sand, gravel & rock used in contruction
- Transport & access roads
- Barrier to migrating fish, sediment build up & CH4 release
- New Habitat
- changes to flow, sediment & erosion downstream
- Location
- Requires a suitable climate, geology & topography
- Most are located in a steep, narrow valley
- large catchment area
- A larger river and increased 'head' of water will generate more energy
- close to consumers or National Grid
- Transport & Storage
- water can be held back until energy is needed
- Flow of river cannot be stopped completely
- Energy Density
- Location
- Requires a suitable climate, geology & topography
- Most are located in a steep, narrow valley
- large catchment area
- A larger river and increased 'head' of water will generate more energy
- close to consumers or National Grid
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