Budget

The cheapest per unit under a price cap, for inverters, batteries and solar panels.

How this list works

How this list works

Each class has a price cap: a product is listed when its newest recorded store price, dated on its card, is at or under it. Within a class the order is the price per watt (inverters and solar panels) or per kWh (batteries), lowest first. A product with no price, or with no documented size to divide by, is left out, and so is a discontinued model and one no listed store sells. A class with fewer than three products to show is not drawn.

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12 V inverters, up to $500

Lowest price per watt first.

24 V inverters, up to $750

Lowest price per watt first.

48 V inverters, up to $1,000

Lowest price per watt first.

Off-grid inverter

WattCycle 6500W 48V Hybrid Single-Phase Solar Inverter Charger

SKU WTINV48V6K5W1P-SGRF-US

$764.991Price as of Nov 12, 2026, 4:40 AM PST, may change
DetailsView at AmazonPaid link. As an Amazon Associate we earn from qualifying purchases.

High voltage inverters, up to $2,000

Lowest price per watt first.

12 V batteries, up to $500

Lowest price per kWh first.

$189.991Price as of Nov 12, 2026, 5:40 AM PST, may change
DetailsView at AmazonPaid link. As an Amazon Associate we earn from qualifying purchases.

24 V batteries, up to $900

Lowest price per kWh first.

48 V batteries, up to $1,500

Lowest price per kWh first.

DetailsView at AmazonPaid link. As an Amazon Associate we earn from qualifying purchases.

High voltage batteries, up to $3,000

Lowest price per kWh first.

Expansion battery

EcoFlow DELTA Pro Ultra X EB

Manufacturer SKU not documented

$2,3491Price as of Nov 12, 2026, 5:40 AM PST, may change
DetailsView at AmazonPaid link. As an Amazon Associate we earn from qualifying purchases.

Solar panels, up to $150

Lowest price per watt first. The price of one panel; a panel sold in a package is judged by its price per panel.

Solar panel

Mission Solar Energy MSE365SQ9S

Manufacturer SKU not documented

Details
Details
Solar panel

Qcells Q.PEAK DUO BLK ML-G10+ 400

SKU Q.PEAK DUO BLK ML-G10+ 400

Details