The SWER networks were plagued with issues such as:
- Limited power capacity.
- Poor voltage regulation.
- Poor power factor.
- Difficulty in clearing down-stream fuse (safety concern).
- Load density limitations.
The Energy Storage System was built to solve the following problems of SWER:
- Power Factor correction by injecting real and reactive power into the grid.
- Demand/Peak Demand management by injecting peak power when needed.
- 4 hours back-up power to the load in case of SWER interruption.
- Peak power necessary to blow safety fuse in the case of a very long transmission line.
- Supplementing power by storage of PV energy.
To replace the SWER lines would have cost the utility between $30-50 000 per km, but by using the existing infrastructure and installing the Energy Storage System, the cost was greatly reduced.