Battery storage case studies
Representative commercial installs across UK industry. Every figure is modelled the way we model yours — from half-hourly data, with the value streams that actually applied.
500 kWh peak-shaving battery at a Midlands injection moulder
A plastics manufacturer near Coventry running a spiky daytime load on a 500 kVA connection, hit hard by red-band DUoS and a six-figure annual bill. The site wanted to add a new moulding line but had no spare agreed capacity.
- 500 kWh
- capacity
- 250 kW
- power
- £86,000
- annual saving
- 5.4 yr
- payback
Outcome: The battery shaved the weekday peak enough to absorb the new line within the existing connection — avoiding a £140,000 DNO reinforcement — and cut red-band DUoS and peak unit costs. Funded under AIA; net of tax relief, payback came in under 5.5 years.
250 kWh solar-plus-storage at a Yorkshire cold store
A refrigerated 3PL warehouse near Leeds with a 180 kW rooftop solar array exporting around 40% of generation at a low SEG rate. Round-the-clock refrigeration meant a strong overnight and evening baseload the solar couldn't cover.
- 250 kWh
- capacity
- 125 kW
- power
- £41,000
- annual saving
- 6.6 yr
- payback
Outcome: Self-consumption rose from 58% to 91%. Surplus midday solar now runs the refrigeration into the evening peak instead of exporting at 6p/kWh. Combined with red-band avoidance, the battery paid back inside seven years.
860 kWh revenue-stacking battery at a logistics depot
A national distribution depot near Doncaster's iPort with a large, flat load and an aggregator relationship already in place. The operator wanted both a bill cut and a grid-revenue line.
- 860 kWh
- capacity
- 430 kW
- power
- £178,000
- annual saving
- 5.1 yr
- payback
Outcome: Arbitrage and peak-shaving cut the bill ~22%; a Capacity Market agreement plus Balancing Mechanism participation via the aggregator (post-P415) added a six-figure annual revenue line. Blended payback just over five years.
Want numbers like these for your site?
Send your postcode and annual spend and we will model your own case.
What you get, within 3 working days: a 2-page battery feasibility summary naming your indicative system size (kW and kWh), the installed cost band, which value streams actually apply to your site (peak-shaving, red-band DUoS avoidance, load shifting, solar self-consumption, grid services), and an honest payback range. If storage does not stack up for your site, the summary says so.
- We do not run a lead auction. Your details are never sold or passed to a panel of installers.
- No marketing list, no newsletter sign-up, no unsolicited calls.
- We will not oversize a system to inflate a quote, or model a payback we cannot defend.
Published by SEO Dons, a specialist commercial energy information network. We are independent: we are not an energy supplier and not a battery manufacturer.