SAV Storage Elf L1-7

Storage Elf L1-7 — more power on the same footprint

The Storage Elf L1-7 delivers 112 kWh and 56 kW. That is 16 kWh and 8 kW more than the L1-6 with no change to the cabinet: same footprint, same height, same foundation, same grid connection. Only the weight rises, to a maximum of 1,490 kg.

This is where the series becomes interesting for peak shaving. What matters there is not how much energy sits in the cabinet but how much power it can deliver at the right moment. A site that wants to cut its peak by 50 kW needs a system that reliably provides those 50 kW — for the full duration of the peak, not just for seconds.

So the L1-7 is worth assessing against the load profile. The quarter-hour values from the grid operator show how high the peaks actually are, how long they last and how often they occur. Only then does it become clear whether 56 kW is the right size.

The series at a glance

Variant	Capacity	Rated on-grid power	Battery voltage	Weight
L1-5	80 kWh	40 kW	224–292 V	≤ 1,270 kg
L1-6	96 kWh	48 kW	269–350 V	≤ 1,380 kg
L1-7 (this page)	112 kWh	56 kW	314–409 V	≤ 1,490 kg
L1-8	128 kWh	64 kW	358–467 V	≤ 1,600 kg

All four variants share the same cabinet, the same footprint and the same 100 kW inverter. They differ solely in the number of battery packs — each pack contributes 16 kWh and 8 kW.

The intermediate size also makes sense where two tasks coincide — PV self-consumption during the day and peak shaving in the afternoon, for instance. The L1-7 has enough headroom to run both modes alongside each other without one blocking the other.

Configuration options

Two functions of the series depend on configuration and are not part of every delivery:

• Direct PV integration — the MPPT input for up to 70 kW of DC-coupled PV is listed as an option in the manufacturer’s datasheet. Below 438 V of string voltage the input operates with derating.
• Grid/island transfer (STS) — the backup power function is likewise listed as an option in the datasheet, while the manufacturer’s website describes it as a standard function.

We clarify both with the manufacturer before quoting. Either way, backup power is not a product feature but a project. Grid disconnection, protection equipment, load allocation, inrush currents and bridging time are assessed for each site.