Renewable Energy

Intermediate

Panel Output After Degradation

Panel power after n years of gradual degradation.

Formula

P_n = P_0 (1 - d)^n

Live Calculator

Members

Variables

P_nPower in year n

P_0Initial power

dAnnual degradation rate

nYears

Example

P_0=400 W, d=0.005, n=25: P ≈ 353 W

Did You Know?

Quality panels degrade only ~0.5% a year, still delivering over 85% of rated power after 25 years.

renewable solar degradation

Share this formula

More in Renewable Energy

Solar PV Energy Yield

Annual energy from a solar array's area, efficiency and sunlight.

Wind Turbine Power

Power a wind turbine extracts, rising with the cube of wind speed.

Betz Limit

Maximum fraction of wind energy any turbine can capture.

Capacity Factor

Ratio of actual output to theoretical maximum.

Levelised Cost of Energy

Lifetime cost per unit of energy produced.

Battery Energy Capacity

Energy stored from voltage and charge capacity.