A constrained grid connection is often the real blocker when a business wants to add EV charging, electrify heat, or expand production. The DNO quote for reinforcement can run into six figures with a queue measured in months or years. A battery is frequently the cheaper, faster route around that constraint.
How grid-connection enabler (behind-the-meter) saves a business money
With a G100 import limitation scheme the battery buffers peak import so the site stays within its existing Maximum Import Capacity, reacting typically within 15 seconds. That lets the new load go in now, on the existing connection, while you avoid or defer the reinforcement. We start the G99 application and DNO consultation alongside the survey.
The value stack is deliberately built on savings you control, red-band DUoS avoidance, demand-charge reduction, and, where solar is present, lifted self-consumption instead of export at a low Smart Export Guarantee rate. Any frequency-response or Balancing Mechanism income is treated as upside, never the foundation. We model it all from your data and hand over the full spreadsheet.
What this looks like on your site
- Lets a site add EV charging, heat pumps, or production capacity without a costly DNO import upgrade
- Buffers peak import to hold the site inside its existing agreed capacity
- Avoids or defers six-figure reinforcement costs and multi-month connection queues
- Often the cheapest route around a capacity-constrained network
Who it suits
Sites hitting their agreed import capacity that want to add rapid EV charging, heat pumps, or new production plant without waiting on, or paying for, a network upgrade.
Typical grid-connection enabler (behind-the-meter) system
| Power / capacity | 250 kW / 500 kWh - 2 MW / 4 MWh |
| Project value | £280,000-£2.4m |
| Payback | 7 years |
| Annual CO₂ saved | varies tonnes |
| Capital allowances | 100% AIA to £1m, then 50% FYA |
Indicative. Your figure is modelled from twelve months of half-hourly meter data. See cost and payback by size.
Compliance and safety
G99 for the storage asset; G100 import/export limitation scheme to hold the site within its Maximum Import/Export Capacity, typically reacting within 15s (max 60s). Early DNO consultation is essential before sizing.
Every system is designed to PAS 63100:2024 fire-safety principles with lithium-iron-phosphate (LFP) cells, BS EN 62619 cell safety, and BS EN/IEC 62933 system safety, with your insurer engaged up front.
No obligation, no phone hard-sell
Every number is built from your half-hourly data and handed over so your finance team can pull it apart. Installation is by MCS-certified, NICEIC-registered engineers, with a 10-year insurance-backed workmanship warranty and a fixed price agreed in writing. And if a battery will not pay on your profile, we say so rather than sell you one.
Common objection we hear: battery payback is always ten years. It is not, for the right profile it is six to eight, and we prove it from your own data or walk away. See the battery storage myths we debunk, or read whether commercial battery storage is worth it.
Get a free grid-connection enabler (behind-the-meter) feasibility
Responds within one working day
- 1. Free desk feasibility from your meter data and roof, no obligation.
- 2. Site survey and a fixed-price proposal, itemised in writing.
- 3. Install and aftercare by MCS-certified engineers.
- MCS Certified
- NICEIC
- RECC
- TrustMark
Common questions
How much does battery storage for a business cost in the UK?
As a 2026 rule of thumb, fully installed commercial battery storage lands at roughly £400-£700 per kWh of usable capacity for behind-the-meter systems, falling toward £250-£400/kWh at multi-MWh scale. A typical 250 kW / 500 kWh peak-shaving system is around £150,000-£300,000; a 100 kW / 200 kWh resilience system around £75,000-£140,000; a 1 MW / 2 MWh system £600,000-£1.2m. Cost turns on the power-to-energy ratio, chemistry, switchgear, and any grid-connection works. Qualifying plant attracts 100% AIA on the first £1m and a 50% first-year allowance on the balance.
What payback should a business expect on battery storage?
For behind-the-meter systems doing peak shaving and solar self-consumption, simple payback in 2026 typically falls between six and eight years, faster where red-band DUoS exposure or solar surplus is high. We build the number from your half-hourly meter data and share the full spreadsheet so your finance team can stress-test it. We treat any frequency-response or Balancing Mechanism income as upside, not the foundation of the case.
How is a business battery maintained, and what does it cost to run?
Through a planned O&M contract: remote 24/7 monitoring with automated alerts, periodic electrical inspection, firmware updates, thermal-management checks, and cell-balancing oversight through the battery management system. Most clients sign a ten-year-plus O&M agreement aligned to the cell warranty. Software-led optimisation, choosing when to charge and discharge against tariffs and DUoS bands, is usually included so the system keeps capturing maximum value as prices move.