Energy bills climbing. Grid connections stalling. Peak charges hurting.
Generator Pro is an authorised Pramac dealer in the UK. Site surveys and installation arranged to suit your site, with ongoing support from our UK engineers.
What battery storage actually does for your site
Cut peak demand charges
Store cheap energy overnight and discharge it when your tariff hits its daytime peak. The bill reduction is often enough to fund the system.
Get more from your solar
Stop exporting your PV for pennies. Hold the electricity on site and use it when production ramps up in the afternoon and evening.
Add EV charging without a grid upgrade
Buffer your fast chargers from the battery instead of the incomer. No DNO upgrade, no waiting list, no reinforcement bill.
Ride through outages and DNO delays
Keep critical loads running during grid events. Get a project commissioned while your grid connection is still in the queue.
Choose the form factor
Three Pramac form factors. One UK partner from survey to switch-on.
Pramac BSI Series
Indoor
109 to 872 kWh · For plant rooms, spare bays and internal enclosures.
View indoor systems →
Pramac BSO Series
Outdoor
Up to 188 kWh per cabinet · Side by side expandable. No building works.
View outdoor systems →
Pramac BSC Series
Container
Up to 2,258 kWh per 20ft container · Grid scale, rapid deployment.
View container systems →Where bill savings and grid income come from
A Pramac BESS on a UK commercial site has four routes to paying for itself. Most of them start the moment you switch it on, not after a payback period.
Cut peak demand charges
Most UK commercial tariffs charge a premium between 4pm and 7pm on winter weekdays. This is known as the DUoS red band. Discharging from the battery during those windows shifts your draw out of the high-rate band.
Capacity Market revenue
National Grid runs annual auctions (T-1 and T-4) paying assets to stay available for grid stress events. A qualified Pramac BESS earns a fixed monthly capacity payment for being on standby.
Get the right price for your PV
Without storage, exported solar pays a fraction of import price under SEG. With a battery on site, you keep that energy and discharge it through the evening shift.
Flexibility services
DNOs and the Balancing Mechanism increasingly pay site batteries for short-notice flexibility through schemes like DFS, Local Flexibility Markets and the BM. Income on top of bill savings.
Which mix applies to your site depends on your tariff, your existing solar, and whether you opt to enter the Capacity Market.
We work that out as part of the site survey before any commitment.
Why Pramac · Why Generator Pro
Proven kit from Pramac. UK delivery from Generator Pro.
Pramac
Pramac has been building power electronics for decades and supplies battery storage to commercial and industrial sites across Europe. The full range runs on LFP prismatic cells and carries the certifications UK specifiers look for: IEC 62619, UL 1973, UL 9540A, VDE 2510-50, plus CE and UKCA. Every system is rated to 7,300 cycles and covered by a minimum 5 year product warranty and 10 year performance warranty.
Generator Pro
We’re an authorised Pramac dealer in the UK. Our engineers carry out site surveys, and installation is arranged to suit your site and existing setup. One phone number, one point of contact. Ongoing support via maintenance contracts or adhoc service calls, with all work fully G99 and G100-compliant.
Real Projects
Pramac storage at work
A manufacturer skips a grid upgrade
Italian UPS manufacturer Borri needed more power for new production lines. Rather than wait for a grid reinforcement, it installed a Pramac BSC 20ft container (1,056 kW, 2,258 kWh) paired with Pramac’s EMS. The system covers peak demand, arbitrages energy prices across the day, and kept the build programme on schedule.
Read the full case study on pramac.com →A resort cuts its diesel bill
At the RIU Palace in the Maldives, four diesel generators were the only source of power. Pramac supplied a 1,064 kWh containerised battery alongside an expanded 1,074 kWp solar array. The site now runs on one generator instead of four, saves roughly 800,000 litres of diesel a year, and removes more than 2,000 tonnes of CO₂.
Read the full case study on pramac.com →Battery storage for EV fast charging
Public EV charging demand is overwhelming local grids. Pramac’s pattern, documented across its e-mobility work, is to buffer fast chargers from a battery rather than the incomer, so sites go live while the DNO queue works itself out. It’s the same pattern Generator Pro deploys for UK charging operators today.
Read more on pramac.com →Specified by UK facilities managers in:
Tell us about your site
Straight answers to the questions we get asked first
How long does installation take?
Most Pramac indoor and outdoor systems are commissioned within two to four weeks of delivery. Container systems are often faster because there’s less site work.
How much space do I need?
A Pramac indoor 109 kWh rack needs roughly a single phone box footprint. An outdoor cabinet sits on a pad about 1.3m by 1.4m. A 20ft container needs a concrete pad the length of a shipping container. We confirm exact dimensions during the site survey.
Will it work with my existing solar or backup generator?
Yes. Pramac kit ties into most solar inverters and generator controllers through standard Modbus TCP and REST interfaces, and the Pramac Smart Energy Controller coordinates everything automatically.
What happens if something fails?
You call Generator Pro. We can cover you via an ongoing maintenance contract or handle adhoc service calls as they come up. Pramac warranty covers product for a minimum of five years and battery performance for ten; the BSC MAX container range carries ten years on both.
