As hardworking entrepreneurs embarking on their retirement journey, this customer envisioned a self-sustaining base station that would provide uninterrupted power, significant energy savings, and a reliable income stream. With rooms added for tenants, they created a setup that offers fixed rental income, even while they travel in their camper van, knowing their home remains energy-efficient and well-supported.

To fulfill these goals, we installed a robust system featuring a 5kW Victron MultiPlus-II inverter/charger, paired with a 5kVA Fronius grid-tie inverter, and a 10kWh lithium battery. The 7.5kWp solar array—18 panels of 420W each—was installed in an east-west configuration to maximize solar generation throughout the day. This Victron-Fronius combination achieves optimal PV-to-load efficiency, ensuring that solar power directly meets the property’s demands while also charging the battery with any excess PV energy. The result is a system with minimal grid dependency and low electrical expenses for both the owners and their tenants.

As an added feature, we implemented automatic load protection on certain outlets: if the battery reaches 80% during a power outage, designated plugs are temporarily disconnected to conserve battery life and prioritize essential loads. This tailored, future-ready solution allows the couple to travel with peace of mind, knowing their property remains energy-sustainable and income-generating year-round.

Components:

• Victron MultiPlus-II 48/5000/70-50 Inverter/Charger;
• Fronius Primo 5kVA Grid-Tie Inverter MPPT with 18x 420W PV panels;
• Freedom Won 10/8 Lithium battery;
• Victron CerboGX + Touch50;
• Victron Lynx Distributor DC busbar;

Notes:

• ESS active with BatteryLife on 20%;
• AC-Out2 enabled on Generator-Start-Stop Assistant on 80%