Berlin-based climate research institute Mercator Research Institute on Global Commons and Climate Change (MCC) has released a new study indicating that, in the last decade, the cost of solar power has dropped by 87 percent, and the cost of battery storage by 85 percent. The cost of solar continues to decline across residential, commercial, and utility-scale PV systems, driven largely by increased module efficiency as well as lowered hardware and inverter costs. NREL's cost. The median quoted price on its platform reached $2. 50 per watt in the second half of 2024, falling 6. “Heading into 2025, solar and battery prices had never been lower on the EnergySage. The National Renewable Energy Laboratory (NREL) released a report last year modeling the all-in cost for solar energy systems, accounting for all system and project-development costs incurred during installation. The report provided time-series cost benchmarks dating back to 2010.
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