Renewable Energy Statistics
Renewables dominate new power capacity. 585 GW added in 2024 (92.5% of all additions). Solar broke records with 452 GW. Total capacity 4,448 GW. Now 46.4% of global power capacity, up from 43.1% in 2023.
Key Renewable Energy Insights
Solar Dominance Accelerating
Solar added record 452 GW in 2024 (+32% capacity growth), reaching 1,866 GW total—42% of renewable capacity. Exceeded all other sources combined. China installed 250 GW solar alone (55% of global additions). Costs plummeted 90% since 2010. Solar now cheapest power source in history—$30/MWh utility-scale.
Wind Power Expansion Continues
Wind capacity grew 113 GW (2024) to 1,133 GW total (25.5% of renewables). Onshore 1,045 GW, offshore 88 GW. China 470 GW wind (42% of global), USA 170 GW, Germany 70 GW. Offshore wind accelerating—new projects 15-18 MW turbines (2× 2020 average). Capacity factors improving: 35% → 42% with taller turbines.
Hydro Remains Largest Renewable
Hydropower 1,270 GW capacity (29% of renewables)—largest single source but growth slowing (+2% annually). Generates 4,200 TWh (16% of global electricity). China 420 GW (33%), Brazil 110 GW, USA 103 GW. Pumped hydro storage 160 GW—90% of grid storage. New projects face environmental/social constraints.
Tripling Goal Within Reach
COP28 goal: triple renewable capacity to 11.2 TW by 2030 (from 3.7 TW in 2022). Current 4.4 TW requires 16.6% annual growth—achievable but needs policy support. 2024 growth 15.1%. Solar+wind can deliver 80% of tripling. Investment needed: $1.5T/year vs current $0.6T. Grid, storage, permitting are bottlenecks.
Renewable Capacity Growth by Technology (2010-2024)
Installed capacity in gigawatts (GW)
Key Finding: Solar exploded from 40 GW (2010) to 1,866 GW (2024)—47× increase. Wind grew steadily 198 GW → 1,133 GW. Hydro stable ~1,200-1,270 GW. Other (geothermal, biomass, tidal) 179 GW. Total capacity tripled 1,320 → 4,448 GW in 14 years.
Annual Renewable Additions (2015-2024)
New capacity added per year (GW)
Key Finding: Additions accelerated from 152 GW (2015) to 585 GW (2024)—nearly 4× increase. 2024 set record for 23rd consecutive year. Solar share of additions rose from 46% to 77%. Wind contribution fell from 39% to 19% as solar outpaced. Momentum building toward tripling goal.
Top 10 Countries by Renewable Capacity (2024)
Total installed renewable capacity (GW)
Key Finding: China dominates with 1,450 GW (33% of global capacity)—more than next 5 countries combined. USA 430 GW, Brazil 200 GW (hydro-heavy), India 190 GW. EU collectively 650 GW. China added 250 GW solar + 75 GW wind in 2024 alone—more than entire US renewable capacity.
Renewable Share of Power Capacity (2010-2024)
% of total global installed capacity
Key Finding: Renewable share surged from 28% (2010) to 46.4% (2024). Crossed 40% in 2022. Renewables now largest capacity source globally (ahead of coal 36%, gas 13%). Generation share lags at 31% due to lower capacity factors. Trend: renewables > 50% capacity by 2026.
Solar & Wind Cost Decline (2010-2024)
Levelized cost of energy (LCOE) in $/MWh
Key Finding: Utility solar costs crashed 90%: $360/MWh (2010) → $30/MWh (2024). Onshore wind -70%: $110 → $35/MWh. Offshore wind -60%: $190 → $75/MWh. Both now cheaper than new coal ($75), gas ($60). Learning rates: 40% cost drop per doubling for solar. Renewables undercut existing fossil plants in 70% of markets.
Renewable Electricity Generation (2024)
TWh generated by technology
Key Finding: Hydro generates 4,200 TWh (45% of renewable electricity), wind 2,400 TWh (26%), solar 1,800 TWh (19%), bioenergy 700 TWh (8%), geothermal 100 TWh (1%). Total 9,200 TWh = 31% of global electricity. Solar+wind grew 20% in 2024—fastest generation growth. Hydro flat due to droughts.
Understanding Renewable Energy Metrics
Key Concepts
Installed Capacity (GW): Maximum potential power output under ideal conditions. Doesn't equal actual generation—depends on capacity factor.
Capacity Factor: Actual output ÷ maximum possible. Solar ~20% (sun availability), wind ~35% (variable), hydro ~45%, geothermal ~85%. Nuclear/coal ~85% for comparison.
Generation (TWh): Actual electricity produced annually. Capacity × capacity factor × 8,760 hours/year. 1 GW solar @ 20% = 1.75 TWh/year.
LCOE ($/MWh): Levelized cost of energy—total lifetime costs ÷ lifetime generation. Includes capital, O&M, fuel, decommissioning. Allows fair comparison across technologies.
Technology Types
Solar PV: Photovoltaic cells convert sunlight to electricity. Utility-scale (1-1,000 MW), rooftop (3-10 kW). Silicon dominates (95%), perovskite emerging.
Wind: Onshore (2-8 MW turbines, CF ~35%), offshore (8-18 MW, CF ~45%). Higher capacity factors at sea due to steadier winds.
Hydro: Run-of-river (no storage), reservoir (storage), pumped storage (grid battery). Large dams controversial—ecosystem impacts.
Data Limitations
IRENA data relies on government reporting—some countries lag by 1-2 years. Small-scale solar (<50 kW) often undercounted—true capacity 10-20% higher. Decommissioned capacity sometimes not subtracted. Generation data more reliable than capacity (measured by grid operators). Capacity factors vary by location—global averages mask regional differences.