Battery storage sized to your load — never oversold
Store the power you generate and use it when it's worth the most — evenings, outages, or peak tariff hours — with a battery sized to what your property actually needs.
Why battery sizing matters
A battery that's too small won't cover your evening usage. One that's too large is money spent on capacity you'll never fill. Because we're engineer-led with no sales staff, there's no incentive to sell you more than your logged usage data says you need — just a system that matches how your household or business actually draws power.
Why this matters more than ever
Two things are changing how homes and businesses use electricity in the UK: EV uptake is rising fast, and energy costs keep climbing. An EV is often charged overnight — precisely when solar panels aren't generating anything. Rising costs make it more important than ever to use the power you've already paid to generate, rather than exporting it cheaply and buying it back later at a higher rate.
That's the job battery storage does: capture what your panels generate during the day, and make it available for whenever you actually need it — whether that's charging your EV after work, running your home in the evening, or covering peak-rate hours. A system that only accounts for daytime generation, without factoring in when you'll actually use that power, is only doing half the job.
What's included
- Free initial assessment
- Battery sized from 30 days of real usage data
- Works alongside new or existing solar PV
- Installation by experienced, qualified engineers
- Fully tested, documented and certificated on completion
- 10-year parts & labour warranty
- Optional fully managed remote monitoring
Frequently asked questions
Will you sell me a bigger battery than I need?
No — batteries are sized to your logged usage data, not upsold beyond what your load actually requires.
Can a battery be added to an existing solar PV system?
In most cases yes, assessed as part of your free initial assessment.
What warranty applies to battery storage installations?
A 10-year parts and labour warranty, the same as every JF Power & Renewables installation.
Curious what battery capacity actually fits your home?
Book a free, no-obligation assessment and find out — no guesswork, no upsell.
Book your free assessment