Solar Panels vs Heat Pump: Which Home Upgrade Should Come First?

Why the order matters

A heat pump (space + water) typically cuts home energy use 30–50% — shrinking the system you need before you size solar. Installing solar first on an un-electrified home often means undersizing or over-sizing for your future load. Most electrification advisors recommend efficiency first, solar second.

The 2026 numbers

A heat pump costs roughly $5,000–$12,000 installed and can cut annual electricity use by 3,000–6,000 kWh. That reduces a solar system by 2–4 kW — worth $5,000–$12,000 less on the solar side, often fully paying for the heat pump itself. Combined, the pair delivers faster payback than either alone.

When solar should come first

If you already use a lot of daytime power (EV, pool, workshop) or your state has a limited net metering future, solar first can lock in favorable terms. Otherwise: heat pump first, then size solar to the new, lower bill. Run both through the PVFig ROI calculator to compare sequences for your home.

Should I install a heat pump or solar panels first?

Usually the heat pump first — it cuts usage 30–50%, so you need a smaller (cheaper) solar system. Then size solar to the reduced bill.

Can solar panels power a heat pump?

Yes — a heat pump adds roughly 3,000–6,000 kWh/year of usage; you just add ~2–4 kW of solar to cover it.

Is a heat pump + solar worth it in 2026?

Together they often pay back faster than either alone, especially in cold-climate states with high electricity rates and IRA heat pump rebates.