Can stackable systems help small businesses manage energy use better?
Stackable energy systems are modular battery units that small businesses can start with basic 5kWh systems costing £3,000-5,000, then expand as needed. They store cheap off-peak electricity for use during expensive peak hours, typically saving businesses 20-40% on energy bills.
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Can Stackable Energy Systems Transform Your Small Business?
If you're running a small business and struggling with rising energy costs, stackable energy storage systems could be exactly what you need. These modular battery systems work like building blocks – you start with what you can afford and add more units as your business grows or your energy needs increase.
Think of them as the energy equivalent of adding extra filing cabinets to your office. Each unit connects to the next, sharing a single connection point to your electrical system. This makes them perfect for small businesses that don't want to commit to a massive energy storage installation right from the start.
How Stackable Systems Actually Help Your Business
The real advantage comes from being able to store cheap electricity when rates are low (typically overnight) and use it during expensive peak hours. Many UK businesses save 20-40% on their energy bills this way. You can also store power from solar panels during sunny periods and use it when the sun isn't shining.
A typical small stackable unit might store 5-10 kWh of energy, enough to power a small café's equipment for several hours during peak rate periods. As your business expands, you simply add another unit to double your storage capacity.
What You'll Actually Pay
Entry-level stackable systems start around £3,000-5,000 for a basic 5 kWh unit, with additional modules costing £2,000-3,000 each. Installation typically adds another £500-1,500 depending on your electrical setup. While this might seem steep upfront, most small businesses see payback within 3-5 years through energy savings.
Several UK manufacturers like Connected Energy and Multi Source Power offer financing options, and you might qualify for government grants through schemes like the Smart Export Guarantee if you're combining storage with solar panels.
UK Regulations You Need to Know
Any energy storage system over 1 kWh must be registered with your Distribution Network Operator (DNO) – this is free but essential. You'll also need a qualified electrician to handle the installation and issue the necessary certificates. Systems under 50 kWh don't usually require planning permission, making them suitable for most small business premises.
Your business rates might be affected if the system is permanently fixed to your building, so check with your local council about potential implications.
The Downsides to Consider
Battery degradation is inevitable – most systems lose about 2-3% capacity per year, though good warranties typically guarantee 70-80% capacity after 10 years. You'll also need adequate indoor space, as most stackable systems aren't designed for outdoor installation.
The technology changes rapidly, which means today's cutting-edge system might look outdated in five years. However, the modular nature means you can often upgrade individual units rather than replacing everything.
Common Mistakes That Cost Money
Many businesses underestimate their future energy needs and buy too small a system initially. While you can add modules later, it's often more cost-effective to plan for some growth from the start.
Another frequent error is failing to integrate the system properly with existing solar panels or not programming it correctly for your specific energy tariff. Time-of-use tariffs can make or break the financial benefits.
Making the Right Choice
Start by analysing six months of energy bills to understand your usage patterns. Look for businesses with similar energy profiles who've installed these systems – many suppliers can arrange site visits.
Choose suppliers offering comprehensive monitoring software so you can track performance and savings in real-time. This data proves invaluable for optimising the system and demonstrating return on investment.
Stackable energy systems aren't suitable for every small business, but for those with predictable energy patterns and growth plans, they offer genuine control over energy costs whilst supporting the shift towards renewable energy.