Electrification
How Much Land is Needed to Power the U.S. with Solar?
How Much Land is Needed to Power the U.S. with Solar?
The Biden administration has set a goal of reaching 100% clean electricity throughout the U.S. by 2035, and solar power is a key for this American energy transition.
In the last decade alone, solar has experienced an average annual growth rate of 42% in the U.S. thanks to federal tax credits, declining costs, and increasing demand. It is projected that more than one in seven American homes will have a solar power system by 2030.
To put this trend into perspective, this graphic uses data from the United States Department of Energy to see how much land would be needed to power the entire country with solar panels.
Solar Panels Across the Ocean State
The U.S. has 102.9 gigawatts of total solar installed capacity which is equivalent to 965 square miles, roughly the size of the country’s smallest state, Rhode Island. This current solar capacity generates enough electricity to power 18.6 million American homes, which is nearly 13% of the nation’s households.
According to a report from the National Renewable Energy Laboratory, roughly 22,000 square miles of solar panel-filled land (about the size of Lake Michigan) would be required to power the entire country, including all 141 million households and businesses, based on 13-14% efficiency for solar modules.
Many solar panels, however, reach 20% efficiency, which could reduce the necessary area to just about 10,000 square miles, equivalent to the size of Lake Erie.
Solar Installations Spreading Across the States
Today, solar represents only 3% of the total U.S. electrical generation.
While California has traditionally dominated the market, other states like Florida and Texas are expanding rapidly, boosted by the residential market.
Large companies with clean energy goals such as Walmart, Apple, Target and Amazon have also helped push solar adoption to near-record levels in 2021.
Despite having a high installation cost, the technology tends to bring savings in the long term. An average-sized residential system has dropped from a price of $40,000 in 2010 to roughly $20,000 in 2020. Along with this, solar panels can save between $10,000-$30,000 over a 30-year lifetime.
Between land and rooftops, the United States has more than enough space to build all the solar panels necessary to power the country. Until then, the future of clean electricity will also depend on hydro, nuclear, geothermal, and wind energy.
Electrification
Charted: Battery Capacity by Country (2024-2030)
This graphic compares battery capacity by cathode type across major countries.
Charted: Battery Capacity by Country (2024-2030)
As the global energy transition accelerates, battery demand continues to soar—along with competition between battery chemistries.
According to the International Energy Agency, in 2024, electric vehicle sales rose by 25% to 17 million, pushing annual battery demand past 1 terawatt-hour (TWh)—a historic milestone.
This graphic, using exclusive data from Benchmark Mineral Intelligence (as of February 2025), compares battery capacity by cathode type across major countries. It focuses on the two dominant chemistries: Nickel Cobalt Manganese (NCM) and Lithium Iron Phosphate (LFP).
Understanding Cathode Chemistries
Batteries store and release energy through the movement of lithium ions. The cathode—a key electrode—determines a battery’s cost, range, and thermal performance.
NCM
- Offers higher energy density and better performance in cold climates, but is more expensive and has a shorter lifespan.
LFP
- Known for its lower cost and improved thermal stability, though it delivers a shorter driving range and adds weight.
As of now, LFP cathodes make up 40% of the EV market in terms of gigawatt-hours (GWh).
Beyond passenger vehicles, LFP batteries are widely used in systems that undergo frequent charging and discharging—like residential and grid-scale energy storage—where added weight isn’t a major concern. They’re also ideal for daily-use applications such as buses and delivery fleets.
Regional Market Trends
In China, LFP is already dominant, accounting for 64% of the market in 2024. By 2030, that figure is projected to grow to 76%, driven by a focus on affordability in the world’s largest EV market. Notably, over 70% of all EV batteries ever manufactured have been produced in China, contributing to deep manufacturing expertise.
| Region/Country | Year | % NCM | % LFP | % Other |
|---|---|---|---|---|
| China | 2024 | 27% | 64% | 8% |
| North America | 2024 | 71% | 7% | 22% |
| Europe | 2024 | 69% | 8% | 24% |
| South Korea | 2024 | 62% | 4% | 35% |
| Japan | 2024 | 58% | 0% | 42% |
Outside of China, NCM remains the leading chemistry due to consumer demand for longer range and premium performance.
North America – NCM holds a 71% share in 2024, with a slight decline to 69% forecasted for 2030.
Europe – NCM’s share is expected to grow from 69% in 2024 to 71% by 2030.
South Korea and Japan – Both countries show similar trends, with NCM gaining share as LFP remains limited or absent.
Electrification
Top 20 Countries by Battery Storage Capacity
China holds about two-thirds of global BESS capacity.
Visualizing the Top 20 Countries by Battery Storage Capacity
Over the past three years, the Battery Energy Storage System (BESS) market has been the fastest-growing segment of global battery demand. These systems store electricity using batteries, helping stabilize the grid, store renewable energy, and provide backup power.
In 2024, the market grew by 52%, compared to 25% growth in the EV battery market. Among the top companies in the BESS market are technology giants such as Samsung, LG, BYD, Panasonic, and Tesla.
This graphic highlights the top 20 BESS markets by current and planned grid capacity in gigawatt hour (GWh), based on exclusive data from Rho Motion as of February 2025.
Chinese Dominance
As with the EV market, China currently dominates global BESS deployments, accounting for approximately two-thirds of installed capacity. However, other markets are expected to grow significantly in the coming years, driven by low-cost lithium-ion cells and the expansion of renewable energy capacity.
Currently, China has 215.5 GWh of installed capacity and an ambitious 505.6 GWh project pipeline. The U.S. follows with 82.1 GWh installed and 162.5 GWh planned.
| Top BESS Markets | Installed 2024 (GWh) | 2027P |
|---|---|---|
| 🇨🇳 China | 215.5 | 721.2 |
| 🇺🇸 USA | 82.1 | 244.6 |
| 🇬🇧 UK | 7.5 | 56.3 |
| 🇦🇺 Australia | 5.6 | 102.9 |
| 🇨🇱 Chile | 3.8 | 41.0 |
| 🇮🇹 Italy | 2.2 | 7.9 |
| 🇸🇦 Saudi Arabia | 1.3 | 32.4 |
| 🇿🇦 South Africa | 1.3 | 9.4 |
| 🇮🇪 Ireland | 1.6 | 2.5 |
| 🇵🇭 Philippines | 1.0 | 6.1 |
| 🇯🇵 Japan | 1.0 | 5.0 |
| 🇩🇪 Germany | 1.0 | 6.2 |
| 🇰🇷 South Korea | 1.1 | 1.3 |
| 🇮🇱 Israel | 0.8 | 4.6 |
| 🇫🇷 France | 0.6 | 1.8 |
| 🇧🇪 Belgium | 0.7 | 5.3 |
| 🇺🇿 Uzbekistan | 0.6 | 5.9 |
| 🇸🇪 Sweden | 0.6 | 1.5 |
| 🇮🇳 India | 0.5 | 4.3 |
| 🇨🇦 Canada | 0.3 | 18.3 |
Canada is projected to be the fastest-growing market through 2027, with its cumulative capacity hitting 18.3 GWh—a significant increase from its current 0.3 GWh capacity.
Countries such as Australia (97.3 GWh pipeline), Saudi Arabia (31.1 GWh), and Chile (37.2 GWh) have relatively small current installations but plan substantial expansions. Within Europe, the UK leads with 7.5 GWh of installed capacity and 48.7 GWh in the pipeline, while Italy, Germany, France, and Belgium show steady but more modest growth.
Despite being technological leaders, Japan (4 GWh pipeline) and South Korea (0.3 GWh) have relatively low planned BESS expansions.
According to Rho Motion, China will remain the dominant player in 2027, but its share of the total market is expected to decline to just over 50% based on the current project pipeline.
While the BESS market is expanding, challenges remain, including grid connection bottlenecks and the development of revenue streams in emerging markets.
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