Usually, it costs about $10,900- $16,900 to install solar in smaller homes, while for bigger homes, the cost ranges from $21,170 – $58,020. The federal investment tax credit (ITC) lowers that price by 30% of all your solar equipment and installation costs.
A standard 1 HP (horsepower) water pump typically requires between 800 to 1200 watts of solar panels. This usually translates to three 400W panels or twelve 100W panels. The exact number depends on the pump type (AC or DC), its efficiency, and your location's sunlight conditions.
A solar water pump sizing calculator is an online tool that estimates: Pump power (Watts) → how much energy your pump needs. Battery capacity (Amp-hours) → storage needed to keep water flowing during cloudy days.
About 97% of solar panels quoted on the EnergySage Marketplace in the second half of 2025 are 400 to 460 watts—expect to see panel outputs in this range in your quotes. Your panels' actual output will depend on your roof's shading, orientation, and hours of sun exposure.
The average cost of solar panels ranges from $2. 50 per watt installed, with most homeowners paying between $15,000 and $35,000 for a complete system before incentives.