Hydroelectric power, or hydropower, is one of the oldest and most reliable sources of renewable energy. It uses the force of moving water—typically from rivers or dams—to generate electricity.
As the UK pushes toward its Net Zero targets, hydroelectric power remains a key player in the nation’s low-carbon energy mix. But how does it work, and what role can it play in your business energy strategy?
Let’s dive in.
How Does Hydroelectric Power Work?
Hydropower converts the kinetic energy of flowing water into mechanical energy, which is then transformed into electricity by a generator.
There are three main types of hydroelectric systems:
1. Run-of-River Systems
Water is diverted from a river to generate power without storing large amounts. Ideal for consistent flow rates.
2. Reservoir (Dam) Systems
Water is stored in a reservoir behind a dam and released as needed to control energy generation. Offers high reliability and control.
3. Pumped Storage
Water is pumped uphill to a reservoir during low demand periods and released during high demand, helping balance the grid.
Hydroelectric Power in the UK
While the UK doesn’t have the vast rivers seen in other countries, hydro still contributes to our energy mix—especially in Scotland, where terrain and rainfall are ideal.
- Over 1.5 GW of installed capacity
- Scotland generates 90%+ of the UK’s hydroelectric power
- Used to support grid stability and meet peak demand
Benefits of Hydroelectric Power
🌍 Renewable and Clean
No fossil fuels = no direct carbon emissions.
🔄 Reliable and Consistent
Unlike solar or wind, hydro can provide baseload power around the clock.
💷 Cost-Effective Over Time
After initial infrastructure, hydro plants have low operating costs and long lifespans (often 50+ years).
🧭 Helps Stabilise Energy Prices
Pumped hydro helps balance intermittent renewables, leading to more stable pricing.
Can My Business Use or Benefit from Hydroelectric Power?
Direct Use?
Most UK businesses don’t have access to their own hydro source. However:
- Some rural businesses near water sources install small-scale hydro
- Farms, estates, and distilleries in Scotland and Wales have explored this
Indirect Use
Many UK energy suppliers now offer green energy tariffs with hydro in the mix. Scalex Technology can:
✅ Help you switch to a hydropower-backed supplier
✅ Conduct a renewable energy audit
✅ Advise on integrating hydro into your Net Zero strategy
✅ Offer insights on PPA agreements with renewable generators
Hydroelectric vs Other Renewables
| Energy Source | Reliability | Cost | Scalability | Grid Impact |
|---|---|---|---|---|
| Solar | Variable | Low | High | Medium |
| Wind | Variable | Low | High | Medium |
| Hydro | Stable | Medium | Medium | High (grid balancing) |
Hydroelectricity’s unique ability to store and dispatch power on demand gives it a distinct advantage in energy planning and price protection.
Power Your Business with Renewable Energy
Whether you’re working toward a carbon-neutral business or looking for stable energy prices, hydroelectric power is part of the solution.
🔌 How Scalex Technology Can Help:
- Evaluate your current energy supply mix
- Source green business energy deals
- Provide insights into renewable integration
- Assist with compliance and carbon reporting
📞 Get Started with a Green Energy Consultation
Scalex Technology helps UK businesses make smarter energy decisions. From sourcing the right renewable tariff to guiding Net Zero strategies—we’re here for your sustainability goals.