1. Solar Power — The #1 ROI Upgrade
A quality 6.6kW solar system costs $4,000–$8,000 after rebates and typically pays back in 3–5 years.
Pro tip: Combine solar with a battery if you're out all day and not home to use daytime generation.
2. Insulation
Adding ceiling insulation reduces heating and cooling energy use by 40–50%. Cost: $1,500–$4,000. Payback: 2–4 years.
3. LED Lighting
Replacing halogen downlights with LED equivalents reduces lighting energy use by 80%. Payback under 2 years.
4. Hot Water Heat Pump
A heat pump hot water system uses 60–75% less electricity than conventional electric. Running cost drops from ~$700/year to ~$200/year.
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