Battery storage
How home battery storage works under Net Billing.
Learn more →Premium equipment only
Every system has three parts: panels, an inverter and, if you want one, a battery. Below is what we use for each, and which size fits your home or business.
More output in the summer heat.
Heterojunction (HJT) panels, 425–450 W, up to 23.0% efficiency. They lose only 0.255% of output per °C, which matters on a Cyprus roof in July.
One system for panels, battery and backup.
KSTAR hybrid inverters are our main platform, with battery and backup built in. Enphase microinverters, one per panel, for roofs with shade or several directions.
Safe storage that lasts.
Lithium iron phosphate, chosen for thermal stability and long life. KSTAR 5.12 kWh packs or the Enphase IQ Battery 5P at home, cabinets for business.
| Power | 425–450 W |
| Efficiency | 21.8–23.0% |
| Heat loss | −0.255% per °C (temperature coefficient of Pmax) |
| Build | HJT, double glass (2 + 2 mm), bifacial |
| Warranty | 15 years product, 30 years linear output (1% first year, 0.25% per year after) |
Sungrow is the only other brand we use, and only when a project calls for it. We do not install budget or unbranded equipment, and every proposal names the exact components.
Most homes fit Scale 1. Pick the card closest to your property to jump to its systems.
Houses & apartments. KSTAR 5–12 kW with 5.12–40.96 kWh, or Enphase.
See home systems ↓Scale 2Villas with heavy loads, small commercial. 50 kW inverter + ~100 kWh cabinet.
See 50kW class ↓Scale 3Businesses to factories. Cabinets 100–215 kWh, parallel up to 20 units.
See C&I systems ↓All-in-one hybrid systems for houses and apartments. A KSTAR inverter with stackable 5.12 kWh LFP battery packs (CATL or EVE cells), so storage can grow later. Inverters IP66, batteries IP65, both outdoor-rated.
| Inverter | Power | Storage (stackable) | Best for |
|---|---|---|---|
| E5KS-D22 | 5 kW single-phase | 5.12 – 20.48 kWh (1–4 packs) | Typical family homes |
| E8KT-D22 | 8 kW three-phase | 5.12 – 40.96 kWh (1–8 packs) | Three-phase homes |
| E10KT-D22 | 10 kW three-phase | 5.12 – 40.96 kWh (1–8 packs) | Larger homes |
| E12KT-D22 | 12 kW three-phase | 5.12 – 40.96 kWh (1–8 packs) | Large homes, heat pump, EV |
Battery pack BP48100: 5.12 kWh (4.6 kWh usable), 5-year product and 10-year performance warranty · GT63 gateway for three-phase whole-home backup: up to 63 A, switches to backup in 10 ms or less · app monitoring and remote updates.
Prefer Enphase? Microinverters under each panel, with IQ Battery 5P units (5.0 kWh usable each, single- or three-phase). See the comparison below.
When a standard home battery is not enough, villas with pools, heat pumps and EV charging, or small businesses, move up to a 50kW hybrid inverter (KAC50DP) paired with a 100kWh-class battery cabinet (BC100DE, 102.4 kWh, CATL LFP, integrated BMS and air conditioning).
| Building block | Spec | Best for |
|---|---|---|
| KAC50DP inverter | 50 kW three-phase hybrid | High-demand homes, small commercial |
| BC100DE cabinet | 102.4 kWh, CATL LFP | Meaningful daily storage & backup |
For businesses and industrial sites: modular cabinets that run in parallel to reach the capacity a site needs, for self-consumption, peak shaving and critical backup.
| Cabinet | Capacity | Notes |
|---|---|---|
| BC100DE | 102.4 kWh | Entry C&I / large homes |
| BC197DE | 197 kWh | Commercial loads |
| BC215DE | 215 kWh · 125 kW | IP54, C4 anti-corrosion, up to 20 units in parallel |
See full commercial & industrial details →
Both are premium. They work differently, so the roof and your goals decide.
| KSTAR hybrid | Enphase microinverters | |
|---|---|---|
| How it works | One inverter for the whole array, with the battery connected to it | A small inverter under each panel, converting to AC on the roof |
| Best for | Most homes, systems with battery and backup, business | Roofs with shade, or panels facing several directions |
| Monitoring | Whole system in the KSTAR app | Every panel separately in the Enphase app |
| Battery | BP48100 packs, 5.12 kWh each, up to 8 per system | IQ Battery 5P, 5.0 kWh usable per unit |
| Battery warranty | 5 years product, 10 years performance | 15 years or 6,000 cycles (over 60% capacity) |
We recommend one or the other after the study, never before.
The sizes above are a starting map, not a menu. The right system depends on your electricity bills, your supply and fuse size, your roof, and whether you want self-consumption, backup, or both. Our free assessment works that out, and the proposal then names the exact equipment.
Related
How home battery storage works under Net Billing.
Learn more →Large-scale KSTAR systems for business and industry.
Learn more →Supply and fuse limits explained.
Learn more →Quick answers
Common questions, answered