Should we choose a simpler system or plan for future expansion?

If you might add an EV, more appliances, more people, or heavier heating/cooling in the next 3–5 years, plan expansion now — retrofitting an undersized platform costs more than sizing the infrastructure correctly upfront.

Prevention approach:

• Modular inverter/battery platform (e.g. Sigenergy) that accepts add-on modules
• Oversized solar array for future load
• Battery sized for today, expandable tomorrow

Simpler only makes sense when usage is genuinely stable — no family change, no EV, no new heavy loads. Most households grow energy demand over time.

100UP’s default: plan for expansion. Lower cost now, fewer expensive regrets later.