LONGi Solar — China

Hi-MO 7 395-A Black

The LONGi Solar Hi-MO 7 395-A Black is a 395W PERC solar panel with 19.5% efficiency. Backed by a 25-year warranty.

Standard TierFEOC: Restricted

395W

Wattage

19.5%

Efficiency

PERC

Cell Type

25 years

Warranty

Full Specifications

Brand
LONGi Solar
Model
Hi-MO 7 395-A Black
Series
Hi-MO 7
Wattage
395W
Module Efficiency
19.5%
Cell Type
PERC
Dimensions
65-67" x 39-40"
Weight
44 lbs
Warranty
25 years
Est. Price Per Watt
$1.94
Est. 7kW System Cost
$13,580
Est. 10kW System Cost
$19,400
Temperature Coefficient
-0.35%/°C
Bifacial
No
Origin
China
FEOC Status
fail

Other LONGi Solar Panels

ModelWattageEfficiencyCell$/W
Hi-MO 480W D480W22.1%N-Type TOPCon$2.67
Hi-MO X 480W D480W22.1%N-Type TOPCon$2.67
Hi-MO 5 480W D480W22.1%N-Type TOPCon$2.67
Hi-MO 6 480W D480W22.1%N-Type TOPCon$2.67
Hi-MO 7 480W D480W22.1%N-Type TOPCon$2.67

Similar Wattage Panels (Competitors)

PanelWattageEfficiency$/W
Panasonic EverVolt 425W E Pro425W22.5%$4.18
Panasonic EverVolt VK 425W E Pro425W22.5%$4.18
Panasonic HIT 425W E Pro425W22.5%$4.18
Panasonic HIT Plus 425W E Pro425W22.5%$4.18

Frequently Asked Questions

How much does a 395W LONGi Solar Hi-MO 7 395-A Black cost?
The LONGi Solar Hi-MO 7 395-A Black costs approximately $766 per panel ($$1.94/W). A typical 7kW system using this panel would cost around $13,580 before incentives.

⚠ The 30% Federal Solar Tax Credit (48E/ITC) expired July 4, 2026.

Selecting 30% ITC assumes you began construction before this deadline. Most new purchases no longer qualify.Learn about your options after the deadline →

Is the LONGi Solar Hi-MO 7 395-A Black a good solar panel?
The LONGi Solar Hi-MO 7 395-A Black has 19.5% efficiency and a 25 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many LONGi Solar Hi-MO 7 395-A Black panels do I need?
For a typical 7kW residential system, you'd need approximately 18 panels. For a 10kW system, plan for about 26 panels. The exact number depends on your roof space, energy usage, and local sun hours.

Written & reviewed by

Jeremy Wolfe — Senior Solar Energy Analyst

Jeremy Wolfe is a solar energy analyst specializing in residential photovoltaic economics, federal and state incentive policy, and return-on-investment modeling for homeowners. He leads EnergyTools' solar research program and methodology.

  • 10+ years analyzing residential solar economics and payback modeling
  • Lead researcher for EnergyTools' 50-state solar cost-per-watt database
  • Author of 100+ solar ROI, payback, and incentive analyses

Methodology & data sources:NREL PVWatts, EPA FuelEconomy.gov, state utility commissions— updated 2026.