Ana Vasconcelos· Renew

Confirmed

The cost of solar energy has fallen by 90% in a single decade

Omissions

• The 90% figure refers to global data from IRENA covering 2010-2024 (14 years), not strictly a single decade. The claim was made without citing a specific source.
• The IRENA source used (published 2025) was not yet available at the time of the speech, though the data trends were well-established from earlier reports. IRENA's 2023 report also showed consistent dramatic cost declines.
• The claim does not specify that this refers to the Levelized Cost of Energy (LCOE) or whether it includes total installed costs vs. electricity generation costs.

Sources

• PrimaryIRENA - Renewable Power Generation Costs in 2024Between 2010-2024, the global weighted average LCOE from solar PV decreased by 90%, and total installed cost fell by 87%
• PrimaryIRENA - Renewable Power Generation Costs in 2024 (Full Report)After more than a decade of steep cost declines, solar and wind energy prices have stabilized; solar PV LCOE declined 90% from 2010-2024