Importance of DSM in Nepalese power system

Nepal's power system is mostly run-of-river hydropower with little storage, so DSM is very important for matching demand with this kind of supply.

1. Reducing the evening peak: demand peaks in the evening (about 17:00–23:00) when lighting and cooking coincide. DSM (ToD tariff, efficient lighting) cuts this peak and reduces the need for imports from India or for costly peaking plants.
2. Using wet-season surplus: in the monsoon there is surplus energy and spill at night. Valley filling and strategic load growth (electric cooking, EV charging, industries at night) use this energy instead of wasting it.
3. Dry-season deficit: in winter, generation falls and Nepal imports power. Conservation and load shifting reduce imports and save foreign currency.
4. Avoiding load shedding: Nepal faced long load shedding until 2018; demand management together with better supply helps prevent it from returning.
5. Reducing losses: high technical losses in distribution are reduced by lower peaks and pf correction.
6. Lower cost for consumers and NEA: deferring new lines and substations reduces investment needs.
7. Replacing imported fuels: shifting cooking and transport from LPG and petroleum to electricity improves energy security and trade balance.
8. Environment: less diesel and fossil use; supports clean-energy goals.

Examples in Nepal: NEA's time-of-day tariff for industries, CFL/LED lamp distribution programmes, seasonal tariff differences, and promotion of induction cooking and electric vehicles.