Clean Energy Statistics
Authoritative data on clean energy investment, costs, and market growth. Sourced from IEA, IRENA, BloombergNEF, and other leading research organizations.
Last updated: December 2024
Global Clean Energy Investment
Global clean energy investment in 2023
Clean energy investment now exceeds fossil fuel investment globally for the first time in history.
Global solar investment in 2023
Solar attracted more investment than all other electricity generation technologies combined.
Battery storage investment in 2023
Grid-scale battery storage deployment doubled in 2023 compared to 2022.
Green hydrogen investment in 2023
Over 1,000 green hydrogen projects announced globally with $320B in planned investment through 2030.
Renewable Energy Costs
Average utility-scale solar LCOE in 2023
Solar is now the cheapest source of new electricity generation in most of the world.
Lithium-ion battery pack price in 2023
Battery prices have fallen 97% since 2010, making storage economically viable at scale.
Green hydrogen production cost range
Expected to fall to $1-2/kg by 2030 with scale and technology improvements.
Average commercial solar payback period
With the 30% ITC and accelerated depreciation, some commercial systems achieve 3-4 year payback.
Market Growth & Deployment
Global installed solar capacity (2023)
Solar capacity additions in 2023 exceeded all other power sources combined.
Grid-scale battery storage deployed in 2023
The US alone deployed 15 GWh of grid storage in 2023, a record year.
Microgrid capacity in the US (2023)
Commercial and industrial microgrids are the fastest-growing segment.
Electrolyzer capacity installed globally (2023)
Over 200 GW of electrolyzer capacity is in the project pipeline through 2030.
Environmental Impact
Global CO2 emissions from energy (2023)
Emissions growth is slowing due to clean energy, but not yet declining globally.
CO2 avoided by renewable energy in 2023
Equivalent to taking 600 million cars off the road for one year.
Share of global electricity from renewables (2023)
Solar and wind together generated 12% of global electricity in 2023.
Nations with net-zero targets
These countries represent 88% of global emissions and 92% of global GDP.
US Market Specifics
US solar capacity installed (cumulative)
Solar now powers over 32 million American homes.
Average commercial electricity rate
Rising utility rates make solar increasingly attractive for commercial customers.
Federal Investment Tax Credit
The Inflation Reduction Act extended the 30% ITC through 2032 with domestic content bonuses.
Home value increase from solar
Homes with solar sell for an average of 4.1% more than comparable homes without.
Technology Performance
Redundant microgrid architecture
Redundant, islandable designs are engineered to minimize downtime for critical loads.
PEM electrolyzer efficiency
Modern PEM electrolyzers convert 95% of electrical energy into hydrogen chemical energy.
Round-trip efficiency of solid-state batteries
Solid-state batteries maintain 80%+ capacity after 20 years of cycling.
Solar panel expected lifespan
Most panels retain 80%+ efficiency after 25 years; many operate 30+ years.
Data Sources & Methodology
Statistics are compiled from leading energy research organizations including the International Energy Agency (IEA), International Renewable Energy Agency (IRENA), BloombergNEF, Solar Energy Industries Association (SEIA), and U.S. Energy Information Administration (EIA). Data is updated quarterly.