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 has a total price of £489 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
- Total Price: £489
- 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.