Jonathan Hugh O'Neill

Hartree Partners (UK) Ltd. engages in proprietary trading in crude oil and petroleum products. The company was founded on October 3, 1997 and is headquartered in London, the United Kingdom.

Part of Hartree Partners LP, Hartree Partners Power & Gas Co. (UK) Ltd. is a British company that explores, produces, purchases, transports, and sells crude oil. The private company is based in London, UK and was founded in 2001.

Part of Hartree Partners LP, Powertree (Holdings) Ltd. is an independent power producer (IPP) in the renewable energy industry. Powertree develops, builds, and manages solar plants primarily in the UK. The British company's mission is to create a fully sustainable energy future through solar energy by combining their technical expertise with investments from sustainably-minded investors. The energy industry is at a tipping point, and Powertree aims to power the energy transition through solar energy. The private company was founded in 2018 by two brothers from Uruguay, Emmanuel and Rafael Meyer, with a goal to build an energy company that focuses exclusively on renewables.

Part of Hartree Partners LP, Rydberg Development Co. Ltd. is a British company that identifies and develops gas fired power stations. The private company is based in London, UK. Rydberg Development Co. was founded in 2016.

Founded in 2017, Hartree Partners Securities (UK) Ltd. is a professional, scientific, and British technical services company. Part of Hartree Partners LP, the private company is based in London, UK.

Part of Hartree Partners LP, Powertree (Taylor Lane) Ltd. is an independent power producer (IPP) in the renewable energy industry. The private company is based in Nottingham, UK. Powertree develops, builds, and manages solar plants primarily in the UK. The British company's mission is to power the energy transition through solar energy by combining their technical expertise with investments from sustainably-minded investors. The energy industry is at a tipping point, and Powertree aims to create a fully renewable energy future. The company was founded in 2018 by two brothers from Uruguay, Emmanuel and Rafael Meyer, with a goal to build an energy company that focuses exclusively on renewables.

Part of Hartree Partners LP, Hartree Partners Advisory Services U.K. Ltd. provides business advisory services. The private company is based in London, UK and was founded in 2001.

Vertree Partners Ltd. is a carbon solutions provider that enables corporates, governments, institutions, and investors to accelerate and deliver upon ambitious climate commitments. The company is based in London, UK and was founded in 2020. The British company guides clients on their journeys towards decarbonisation and helps navigate the carbon markets, accelerating and unlocking the highest quality investment opportunities by capitalising on their deep expertise in sustainability, carbon project development, trading, and risk management. Vertree offers services such as abatement, compensation and neutralisation, project development, and advisory to help businesses and institutions mitigate their environmental impacts through the use of carbon finance. The company works with world-leading partners to develop high-quality climate compensation and neutralisation projects.