A close run between five modules
TWMNF-66HD725 delivers 21,345 kWh over 30 years at 0.37 ¢/kWh, which makes its energy 4% cheaper per kilowatt-hour than the dearest module in this report. It is not the cheapest sticker price in the set - $66.78 is - and it still wins.
- Most energy produced. 21,345 kWh over 30 years.
- Best composite in the set. It scores highest across lifetime energy, cost per kWh and warranty length taken together, even though it is not the cheapest energy in the set.
Side by side
What drives each score
Each bar is the module's own composite, split into the three weighted parts that make it up. A dimension the whole set ties on separates nothing and splits evenly, and one they nearly tie on counts for nearly nothing.
Where the difference comes from
Kilowatt-hours added up year by year. The gap widens with every year - by year 30 it is 2,797 kWh between the highest and lowest module.
Percentage of nameplate power still delivered, on each module's own datasheet curve. A module that holds its power longer is producing from a bigger number every year.
Energy price inflation, inverter and installation cost, local irradiance and weather, shading, or degradation behaviour that differs from the datasheet curve. This report compares modules against each other, not a full system business case. Talk to an installer before you buy.