Solar Energy Statistics 2026 show the fast growth of solar power and its larger role in renewable electricity. Across the world, governments, businesses and households are investing in solar PV to cut fossil fuel use and support cleaner power systems. In the UK, record installs show growing demand for rooftop solar and a bigger role for solar in the UK’s renewables mix. Grid capacity, battery storage and panel recycling still matter for the years ahead.
This guide covers the latest global solar figures, UK install trends, leading markets, power generation and the environmental issues linked to wider solar use.
Global solar installs reached a record in 2025, and worldwide capacity passed 3 terawatts in early 2026.
The UK recorded 269,000 solar installs in 2025.
Future progress will depend on power networks, energy storage and responsible panel recycling.
Global Solar Energy Statistics 2026
Solar power has become a major part of global renewable energy growth. SolarPower Europe’s Global Market Outlook for Solar Power 2026–2030 says the world installed a record 664 gigawatts (GW) of new solar capacity in 2025, up 12% from 2024.
Global solar capacity reached about 2.9 terawatts (TW) by the end of 2025 and passed 3 TW in early 2026. Solar electricity generation reached an estimated 2,778 terawatt-hours (TWh) in 2025, equal to about 9% of global electricity production, according to SolarPower Europe.
IEA PVPS gave a different estimate of about 690 GW of new solar PV capacity installed in 2025. The gap comes from different data and methods used by the two groups. Both reports show that solar power kept growing at a very fast pace.
These energy statistics separate annual installs from total capacity. Annual installs measure the new capacity added in a year. Cumulative capacity is the total installed over time.
SolarPower Europe’s medium case forecasts 612 GW of new installs in 2026, an 8% drop from 2025. This is a forecast, not a final result. The lower figure reflects changes in China and issues with power networks and storage.
Solar Energy Statistics UK: Installation Growth
The UK solar market keeps growing as households, businesses and energy developers invest in renewable power. Government figures published in May 2026 confirmed that 269,000 solar installs were completed during 2025. That was a record annual total and 37% more than the year before.
About 255,000 of those installs were rooftop systems on homes, businesses and other buildings. The UK also passed two million solar installs in March 2026, which shows the rising use of solar technology.
In April 2026, the country recorded almost 23,000 more installs. More than half were on homes, which shows strong interest in local power generation.
These figures show that solar PV is no longer limited to large power stations. Households, manufacturers, warehouses, schools and other organisations can install solar panels to generate electricity and may reduce their use of grid power.
For businesses, the financial benefits depend on install costs, electricity prices, roof fit and how much power can be used on site. Systems should be checked against real energy use, not assumed savings.
Which Countries Lead Solar Power Generation?
Solar installs vary from country to country because of policy, factory capacity, investment and electricity demand.
China stayed the world’s largest solar market in 2025. SolarPower Europe estimates that China installed 382 GW of new capacity, equal to 57% of global additions. India ranked second with 45.7 GW, while the United States installed 43.2 GW.
IEA PVPS gave higher estimates for China and India, based on its own dataset. Its figures put China’s installs at about 415 GW and India’s at 54 GW. These gaps show why readers should check the source and method when comparing solar statistics.
China’s role in the market is very large. Changes in its install rate can affect global annual totals because the country makes up such a big share of new solar deployment.
India’s growing market also shows the importance of solar power in meeting rising electricity demand. At the same time, European countries keep investing in solar systems to diversify power supplies and cut dependence on imported fossil fuel energy.
How Much Electricity Does Solar Energy Generate?
Solar PV turns sunlight into electricity without directly burning fuel during operation. The amount generated depends on sunlight, weather, panel efficiency, system angle and maintenance.
SolarPower Europe says solar PV generated 2,778 TWh of electricity worldwide in 2025, supplying about 9% of global electricity production. That makes solar power an increasingly important part of modern power systems.
In the UK, solar output changes through the year. Longer daylight hours usually support higher generation in spring and summer, while shorter days reduce output in winter. Cloud cover and shading can also affect system performance.
This variation matters when planning a solar install. Businesses should look at annual electricity demand and expected generation rather than rely on peak summer output.
Battery storage can help households and organisations use extra daytime electricity later. However, batteries add install costs and have their own environmental impacts. Their value depends on power use, export terms and system design.
Solar power also works with other renewable sources. Wind, hydropower and sustainable bioenergy can add to a more varied power supply. Liquid biofuels are especially relevant to transport and some industrial uses, although they play a different role from solar electricity.
Are Solar Panels Becoming Cheaper in 2026?
Solar tech has become more available through better manufacturing, higher output and more supply-chain competition. However, the cost of a full solar install depends on more than panel price.
UK government figures published in May 2026 said the cost of buying and fitting solar PV had fallen by up to 9%. Actual costs still vary with the size and complexity of each project.
An install may include panels, inverters, mounting gear, electrical work and labour. Battery storage, roof repairs and electrical upgrades can lift the starting cost.
Businesses should look at the expected payback period as well as the purchase price. Financial returns depend on install costs, electricity prices, upkeep and the share of power used on site.
For example, a warehouse that uses a lot of power during the day may benefit from using its own solar output. A business that runs mostly at night may need battery storage or another energy plan.
A professional review can help show whether a proposed system is a good fit for the building and its energy needs.
Why Solar Energy Matters for the UK’s Net Zero Goals
Solar energy can support the UK’s move to a lower-carbon power system. When solar power replaces electricity from more carbon-heavy sources, it can reduce operating greenhouse gas emissions.
Rooftop solar also lets buildings generate power without needing every install to take up extra land. This creates options for homes, factories, offices and public buildings.
However, solar panels are not free of impact. Manufacturing, transport and install all use energy and materials. Their full environmental benefit depends on production, working life and end-of-life treatment.
As the number of installs grows, responsible waste management matters more. Panels will eventually need repair, replacement or recycling, even if many stay in service for decades.
Planning for end-of-life management helps ensure that useful materials are recovered and that discarded gear is handled properly.
PV Recycling provides more detail in its guide to solar panel adoption and end-of-life management.
Solar Panel Waste and Recycling Statistics
The growth of solar installs will create more end-of-life gear over time. Although most newly installed panels will stay in use for years, some may need early replacement because of damage, defects or major refurbishment projects.
Solar panels contain materials that can be recovered through proper recycling methods. Depending on the panel design and treatment method, these include glass, aluminium and copper, plus other materials that may need special recovery methods.
Recycling can cut the need for virgin raw materials and help stop useful resources from being wasted. However, recovery rates vary, and not every part can be recycled the same way.
Businesses that manage solar gear should keep records of damaged and retired panels. Good collection and treatment plans can help ensure that waste is handled responsibly and in line with the rules.
Large solar farms should plan for end-of-life during project work. A single site may one day produce large amounts of panels, cabling, mounting gear, and electrical parts that need proper handling.
Read PV Recycling’s 2026 PV waste forecast for more information about the growing solar waste challenge.
What Are the Main Solar Energy Trends in 2026?
Several trends are shaping the solar sector. Global installed capacity keeps rising, although annual install rates can change from country to country. A drop in new installs in one year does not mean total installed capacity is falling.
Battery storage is becoming more important because it can move some solar power from high-output periods to times of higher demand. Investment in storage and power networks can help systems take on more renewable power.
Rooftop solar is another key trend. Homes and business buildings can generate power close to where it is used, which can reduce grid buys and improve energy planning.
Grid capacity remains a challenge. New projects need the right links, and network congestion can delay installs or limit power exports. Investment in infrastructure and flexibility will shape future growth.
Finally, solar panel recycling is becoming more important as the sector matures. Manufacturers, project owners and waste managers need good ways to handle damaged and end-of-life gear while recovering useful resources.
What Do Solar Energy Statistics 2026 Mean for Businesses?
For UK businesses, solar power offers ways to manage power use and support environmental goals. The benefits depend on the building, power demand, install costs and available grid links.
Firms considering solar should review their electricity bills, roof condition, working hours and future power needs before they invest. They should also assess whether battery storage would add value.
Businesses already using solar should include upkeep and eventual replacement in their asset plans. Good equipment records make it easier to plan repairs and manage waste when parts reach the end of their useful life.
The recycling sector also has a key role. As solar installs grow, good collection and treatment services can help recover materials and support more circular supply chains.
Explore PV Recycling’s solar panel supply chains guide for 2026 for more information about the industry’s growth.
The Future of Solar Energy Beyond 2026
Solar power is expected to stay central to the global energy shift. SolarPower Europe’s medium case forecasts that cumulative global capacity could reach 6.6 TW by 2030, more than double the capacity recorded at the end of 2025.
This is still a forecast, not a sure result. Future growth will depend on policy choices, investment, electricity demand, supply chains and the availability of suitable grid links.
In the UK, wider use across homes, commercial buildings and solar farms could strengthen domestic power generation. But lasting growth needs more than panel installs. Power networks must adapt, projects must stay financially sound, and waste systems must be ready for equipment that reaches the end of its useful life.
Combining new installs with effective recycling will help extend the environmental benefits of solar technology beyond power generation alone.
Why is solar panel recycling important?
Recycling helps recover materials such as glass, aluminium and copper, cuts resource waste and supports responsible management of end-of-life panels.
Solar Energy Statistics 2026 show the growing importance of solar power in global and UK power systems. Record installs in 2025 and the global capacity milestone in early 2026 show the technology’s rising role.
Future progress will depend on affordable systems, stronger power networks, effective energy storage and responsible recycling. Together, these steps can help solar power support a more sustainable energy system across the full life of each install.