Watch & Read: They Said 6kW. We Installed 8kW.
When this new build property applied for solar, the grid tried to cap the system at 6kW. We appealed. They approved the full 8kW inverter. In this video, Jonathan walks through: • East & west elevation panels •…
What this video covers
This is one of KMM's top-of-funnel short-form videos — a 60-second introduction to a topic worth understanding before you book a survey.
When this new build property applied for solar, the grid tried to cap the system at 6kW. We appealed. They approved the full 8kW inverter. In this video, Jonathan walks through: • East & west elevation panels •…
Solar battery storage economics
- Typical domestic battery cost: £640–£900 per usable kWh fitted in 2026 (LFP chemistry)
- Recommended 4-bed family home size: 9.5–13.5 kWh usable
- Self-consumption uplift: from ~38% to ~75% on typical 4kWp domestic install
- Time-of-use tariff arbitrage: charge at 7–7.5p overnight, discharge during 28p peak — typical 6–8 year payback on battery-only installs
- Warranty: tier-1 brands warrant 10 years and 80% capacity retention; cycle life typically 6,000+ cycles
How this applies to your project
If you're researching solar for your own home, farm, factory or commercial building, the principles in this video apply directly — but the specific numbers will vary based on your roof orientation, your import tariff, your half-hourly load profile and your tax position.
KMM's fully funded survey is the fastest way to translate this video into specific advice for your site. We:
- Run a desktop assessment from your MPAN and roof satellite imagery — inside 5 working days, no site visit needed at this stage
- Schedule a drone survey if the desktop assessment shows the project is viable — 3D model of your roof inside 48 hours
- Deliver a bound proposal with full ROI cash model, three finance routes side-by-side, and every commission disclosed
- Decide together — no hard sell, no time-pressured discounts, no deposit required to keep the quote open for 30 days
Related KMM pages
Battery Storage · Ev Chargers · Cost · Case Studies · Domestic Solar
Subscribe for the next video
Steve and Kieren publish a new video on the KMM YouTube channel — Solar Made Simple every couple of weeks. Topics typically rotate through real customer install case studies, technical explainers, finance route walk-throughs, and tariff comparisons.
Book a fully funded survey to apply this to your project
Tell us your postcode, sector and current electricity spend — we will run a desktop assessment inside 5 working days. No deposit, no pressure.
Book Fully Funded Survey → 0115 647 3822