Need uninterrupted power for your event, compound, or construction project? Generator hire from FESS Hire ensures your site stays powered, compliant, and safe; whether you’re lighting a festival, running tools on-site, or keeping welfare cabins warm in winter.
From diesel workhorses to silent hybrid sets, we supply temporary generators tailored to your load, runtime, and compliance needs. We offer nationwide delivery and expert support.
🔌 What Are You Really Hiring?
When you use FESS Hire for your generator hire, you get far more than just a box that makes electricity. You’re hiring a complete temporary power solution, including:
- A mobile Stage V diesel, hybrid, or HVO-compatible generator (commonly 20–500 kVA)
- Full BS 7909 distribution and cabling
- Earthing plan and disconnection protection (RCDs/MCBs)
- Fuel tank (bunded), refuelling strategy, and spill control
- Noise management and emissions compliance
- Call-out and support options
All were delivered, tested, and documented by professionals, with a named Senior Person Responsible (SPR) for peace of mind.
📚 Key Compliance Standards You Need to Know
- BS 7671 (IET Wiring Regulations) – Applies to all temporary electrical installations.
- BS 7909:2023 – The go-to events standard for design, testing, documentation, and safety responsibilities.
- IET Temporary Power Guidance (2024/25) – Includes crucial tips on handling LED lighting, audio/IT loads, and parallel generators.
- NRMM (London) – Only Stage V-compliant generators allowed. Proof required.
- DEFRA / EA GPP2 – Bunded fuel, spill response, and environmental placement rules.
- HSE Noise Regs – Protecting workers and neighbours from excess sound.
⚙️ How to Choose the Right Generator
🔹 Step 1: Calculate Load & Inrush
- Start with real kW, not just kVA
- Factor in inrush current (3–6× for motors, chillers, pumps)
- Add 30–50% headroom for resilience
- Consider single-phase vs three-phase balance
🔹 Step 2: Select the Generator Type
| Generator Type | Best For |
| Diesel (e.g., 100 kVA) | General site power, tools, cabins, welfare |
| Synced Sets (2 x 100 kVA) | Critical systems, surge loads, failover resilience |
| Hybrid (Battery + Gen) | Overnight events, low-noise zones, fuel savings |
💡 Tip: Hybrid setups allow silent hours and lower fuel use, while synced sets handle surges and redundancy.
🔋 Fuel, Runtime & Noise at a Glance
| Generator Size | Fuel Use @ 75% Load | Tank Size | Runtime Estimate | Noise (dB(A) @ 7 m) |
| 60 kVA | ~12–14 L/hr | ~220 L | ~15–18 hrs | ~65–70 |
| 100 kVA (e.g., XQP100) | ~17.1 L/hr | ~410 L | ~24 hrs | ~65 |
| Hybrid | ~0.5–2.0 L/hr in gen mode | Varies | 24–48 hrs silent/battery+gen | <60 (silent modes) |
🟢 Stage V engines and HVO fuel compatibility are now standard on modern UK hire fleets.
🛠️ Distribution, Cabling & Paperwork
All temporary generator installations must include:
- BS 7909 documentation: load schedule, test sheets, SPR sign-off
- BS 7671 protection coordination (MCBs, RCDs, disconnection times)
- Correct earthing scheme (floating, TN-S, etc.)
- ADS & selectivity for LED-heavy setups
- Fuel containment (bunded tanks, spill kits, location risk assessment)
We supply everything: not just the set, to ensure you’re event- and inspection-ready.
🔇 Placement, Emissions & Environmental Best Practice
- Keep diesel sets away from noise-sensitive boundaries (aim <65 dB(A) @ 7 m)
- Use hybrid or larger sets with slower-running engines for reduced sound
- Request HVO fuel to cut carbon by up to 90%
- Position tanks safely, away from drains and watercourses, fully bunded
- Document noise/emissions strategy in your RAMS/SAG pack
💷 Typical Generator Hire Costs (UK 2025)
Prices vary by spec, duration, and included services:
| Generator Size | Estimated Weekly Hire (ex. VAT) |
| 60 kVA | £375 – £495 |
| 100 kVA | £550 – £800 |
| 200+ kVA | POA |
| Hybrid Add-on | +£100–£300/week depending on model |
📌 Always request a quote – packages may include fuel, delivery, cables, and servicing.
Why use FESS Hire for your generator hire?
We don’t just drop off a box; we deliver complete, compliant temporary power packages with 24/7 support:
✔️ Modern Stage V and HVO-ready fleet
✔️ Hybrid, silent and eco-options available
✔️ Complete BS 7909 documentation
✔️ Distribution, cables, earthing & fuel included
✔️ Nationwide delivery and rapid call-out
✔️ Expert help on sizing, noise, and emissions
Let us power your event, site, or temporary setup without the stress.
❓ Frequently Asked Questions (FAQs)
1. How do I know what size generator I need?
Start with a kit list (kW) and expected usage, including start-up surges. Add 30–50% headroom. FESS Hire can calculate this for you.
2. Are your generators HVO-compatible?
Yes – our fleet includes HVO-ready Stage V generators. HVO reduces CO₂ by up to 90% compared to red diesel.
3. Do I need documentation for event or construction site power?
Yes – all hires include BS 7909 documentation, load schedules, test sheets and a Senior Person Responsible (SPR) sign-off.
4. Can I get a silent generator for overnight or residential areas?
Absolutely – we offer hybrid sets and low-noise diesel models with <60 dB(A) sound levels, ideal for sound-sensitive sites.
5. Do you supply distribution and cables too?
Yes. We provide BS 7909-certified distribution boards, cables, RCDs, MCBs, and a full protection strategy.
6. What’s included with generator hire?
We can supply everything you need: generator, fuel, cabling, distribution, testing, documentation, and refuelling plans – all tailored to your project.
🔗 Helpful Resource
For detailed UK guidance, see the HSE Guidance on Temporary Electrical Installations (opens in a new tab).
📞 Need Reliable Generator Hire for Your Next Project?
Whether it’s an urgent event power solution or a long-term site installation, FESS Hire provides turnkey generator hire with all the extras, fuel, cabling, support, and documentation included.
📲 Contact us today for expert advice and a fast quote. Let’s get your project powered up, safely, cleanly, and compliantly.