What’s the value of the green energy market?

Point of note: Update July 2026.

The global renewable energy market was valued at approximately $1.2 trillion in 2025, up from approximately $881 billion in 2020http://emunitefs.co.uk/renewable-energy-market/. Meanwhile, the International Energy Agency expects renewable power capacity to almost double by 2030, driven primarily by continued growth in solar PV and wind energy.

The green energy sector has grown faster than expected by most analysts. Global renewable energy capacity increased from around 2,799GW in 2020 to a record 5,149GW by the end of 2025, driven largely by rapid growth in solar and wind power. Forecasts indicate that this momentum will continue through to 2030, with annual capacity additions to reach 935GW. 

By the end of 2025, renewables accounted for 49.4% of the world's total installed power capacity, bringing the sector closer than ever to becoming the dominant source of global electricity generation. Given the record 692GW of renewable capacity added during 2025, the industry appears well on track to exceed 5,500GW in 2026.

What is driving the growth of the green energy sector?

The growth is being driven by continued interest and support - both from the public and from governments - of renewable energy. Increasing concern about climate change and other adverse effects of fossil fuels is leading to continued investment and interest in green energy powering grids.  

What is the fastest growing renewable energy source?

Solar power has emerged as the fastest-growing renewable energy source, driven by falling technology costs, improved efficiency, and widespread deployment across both developed and emerging markets. According to the International Energy Agency (IEA) , solar PV is expected to account for around 80% of the growth in global renewable power capacity through 2030.

As the green energy market continues to grow, it it's crucial to ensure that power networks are capable of adding more and more power sources into the network – especially as renewable energy can often be generated by a larger volume of smaller power stations compared to nuclear and coal plants. 

Ensuring that cables have been laid to connect new power stations to the grid and ensuring that the existing network’s cables are able to sustain the increased load, will be essential to delivering on the promise of the booming green energy market. 

Apart from being good for the planet, green energy is increasingly becoming good business.