Battery Storage Installation Training UK: City & Guilds 2923 Guide (2026)
To install battery energy storage systems (BESS) in the UK, you need the City & Guilds 2923 Energy Storage Systems qualification. This two-day course costs £489 inc. VAT at LTS and requires a Level 3 electrical qualification and current 18th Edition certificate. With BS 7671 Amendment 4 introducing a dedicated Chapter 57 on battery installations from April 2026, this qualification is becoming essential for electricians working in the renewable energy sector.
Key Facts
- Qualification: City & Guilds 2923 Energy Storage Systems
- Duration: 2 days at LTS
- Cost: £489 inc. VAT
- Prerequisites: Level 3 electrical qualification + current 18th Edition (BS 7671)
- Amendment 4 impact: New Chapter 57 on BESS from April 2026
- Combo savings: Solar + Battery £989 (saves £189) | Full Renewables Triple £1,189 (saves £358)
Why Battery Storage Is Growing
The UK battery storage market is experiencing rapid growth driven by several factors:
- Solar PV integration — the majority of new domestic solar installations now include battery storage, with homeowners wanting to store excess energy for evening use
- Energy cost management — battery systems allow homeowners and businesses to store cheap off-peak electricity and use it during expensive peak periods
- Grid services — commercial and utility-scale battery systems provide frequency response, peak shaving, and grid balancing services
- Government support — battery storage systems benefit from 0% VAT when installed alongside solar PV on residential properties
- Amendment 4 recognition — the inclusion of a dedicated BESS chapter in BS 7671 signals the industry's recognition that battery storage is now mainstream
For electricians already qualified in solar PV installation, adding battery storage is a natural and profitable extension of services.
What Is the City & Guilds 2923?
The City & Guilds 2923 (Award in Energy Storage Systems) is the industry-standard qualification for battery storage installation in the UK. It covers the design, installation, testing, and commissioning of domestic and commercial battery energy storage systems.
What the Course Covers
- Battery technology fundamentals — lithium-ion, lithium iron phosphate (LFP), and other battery chemistries used in stationary storage
- System design — sizing battery systems, calculating storage capacity, and selecting components
- Electrical integration — connecting battery systems to consumer units, hybrid inverters, and solar PV arrays
- Safety requirements — ventilation, fire protection, thermal management, and safe working practices
- Testing and commissioning — verifying system performance and safety
- PAS 63100 compliance — fire protection requirements for domestic BESS installations
- Grid connection — how battery systems interact with the distribution network and G98/G99 requirements
Assessment
The qualification includes theoretical assessment and practical demonstration of competence in battery storage system design and installation.
Connection to BS 7671 Amendment 4
Amendment 4 to BS 7671 (publishing 15 April 2026) introduces Chapter 57 — a dedicated section on stationary secondary battery installations. This is the most directly relevant Amendment 4 change for battery storage installers.
Key requirements in Chapter 57 include:
- Ventilation — specific requirements for battery rooms and enclosures to manage heat and potential gas release
- Fire protection — domestic installations must comply with PAS 63100; non-domestic installations require a fire risk assessment
- Disconnection arrangements — requirements for isolating battery systems safely for maintenance and emergency situations
- Overcurrent protection — specific requirements for protecting battery circuits
If you are installing battery storage systems, you must be familiar with Chapter 57 after October 2026 when Amendment 4 becomes mandatory. Taking the 2923 course alongside an Amendment 4 update ensures you are fully prepared.
Prerequisites
You must hold the following before enrolling on the 2923:
- Level 3 electrical qualification (Level 3 Diploma 2365 or equivalent)
- Current 18th Edition certificate (BS 7671, including Amendment 4 from October 2026)
Combining Battery Storage with Solar PV and EV
Most customers want complete home energy systems. LTS offers combination courses that cover multiple green skills:
| Package | Price (inc. VAT) | Duration | Saving | Courses Included |
|---|---|---|---|---|
| Battery Storage (2923) only | £489 | 2 days | — | BESS |
| Solar + Battery Combo | £989 | 5 days | £189 | Solar PV + BESS |
| Full Renewables Triple | £1,189 | 7 days | £358 | Solar PV + BESS + EV |
The Full Renewables Triple is the most popular option for electricians wanting to offer the complete range of green skills services. See also our guides to solar PV training and EV charger training.
Earning Potential
Battery storage installation adds a premium to your services:
- Domestic BESS installation (alongside solar PV): £300–£600 labour charge per system
- Standalone battery retrofit: £400–£800 depending on complexity
- Commercial BESS: Multi-day projects with higher labour rates
- Maintenance contracts: Ongoing revenue from periodic system checks
Electricians qualified in the full renewables suite (solar + battery + EV) are in the strongest position to command premium rates as demand grows.
Next Steps
If you are a qualified electrician looking to add battery storage to your services, book a free consultation with an LTS course advisor to discuss the best route for your experience level.
LTS is a City & Guilds accredited training centre in Cheshunt, Hertfordshire, close to M25 Junction 25. We have trained over 5,000 students with a 4.9/5 rating. Call us on 01992 413 503 or email hello@learntradeskills.co.uk.