The Secrets of Iceland's Geothermal and CCAS Success

Iceland's distinctive geography, with its active volcanoes and arctic conditions, provides the foundation for its position in green energy. The nation is a centre for climate tech development in areas such as carbon capture and storage geothermal power and biotech.

This innovation is concentrated at the Geothermal Park at Hellisheiði, owned by Orka náttúrunnar (ON Power), one of the country's leading green energy providers.

The park is situated on 103 hectares at the site of the Hellisheiði power plant, the largest geothermal power plant in Europe. It serves as an incubator for both climate tech start-ups and established businesses, using the earth's natural energy to power its vision.

The steam that hangs overhead is a clear indicator of the geothermal activity being harnessed below.

How Will COP30 Impact Big Oil and Global Energy?

The upcoming COP30 in Belém, Brazil, is positioned at a critical juncture for global climate action, taking place in the symbolic heart of the Amazon rainforest.

For the energy sector, the location amplifies the growing pressure to reconcile fossil fuel production with decarbonisation goals. Following a COP29 event in Azerbaijan that faced scrutiny, the choice to host in the Amazon signals a deliberate change in focus, placing the planet's ecological health front and centre.

However, the logistical and political challenges of this location could create new tensions that threaten to divert attention from the primary goal of advancing climate policy.

Ember: Solar Power Sees Renewables Overtake Coal

Solar and wind power now expand at a rate sufficient to meet the world's increasing demand for electricity. In the first half of 2025 the combined expansion of these renewable sources surpasses global demand growth by 109%. Solar power alone meets 83% of this increase while coal generation experiences a slight decline of 0.6%.

New data from an Ember report analysis reveals that 88 countries that account for 93% of global electricity demand report that renewables have overtaken coal for the first time. This event could signal a turning point for the global power mix moving towards cleaner energy sources.

Top 10: Renewable Energy Companies

The global renewable energy landscape is undergoing a historic transformation, with new data showing solar and wind power growing fast enough to outpace rising electricity demand. 

According to Ember’s H1 2025 analysis, their combined growth exceeded global demand growth by 109%, with solar alone meeting 83% of the increase. This surge pushed renewables past coal for the first time on record, now supplying 34.3% of the world’s electricity compared to coal’s 33.1%. 

Ranked by market capitalisation, this list explores the largest renewable energy companies in the world.

How The Carbon Trust Captures Offshore Wind Potential

A core challenge since 2001 for the Carbon Trust has been de-risking and scaling emerging low-carbon technologies particularly those in the pre-commercial phase.

With almost a quarter-century of experience, the Carbon Trust is finding this challenge more manageable through its accelerator model.

This model combines government and corporate funding to invest in applied innovation reduce technology costs and overcome market barriers which enables wider commercial adoption.