Our successful financial performance is supported by our deep commitment to investing responsibly and we believe it is paramount in our ability to deliver sustainable, long term returns.
Responsible Investment remains at the core of our fund and it is more pressing than ever as we face a climate emergency. Through our new Responsible Investment Strategy, we demonstrate to our members we have a credible plan to deliver strong long term financial returns as the impacts of climate change materialise. We believe financial risk and opportunities will come from both these impacts, regulation and policy, alongside increased competition from alternatives and technological innovation.
In 2015 we set ourselves the target to maintain at least 25% of our investments in clean technology and other sustainable opportunities across all asset classes. As at 31 December 2018, 39% of our investments were in clean technology and other sustainable opportunities, representing a value of £1.35bn. We also continue to make excellent progress against our climate change related goals, with 11% of the Fund now invested in low carbon, energy efficient and other climate mitigation opportunities.
By integrating climate change into our risk management process, using carbon footprinting, assessing fossil fuel exposure and challenging managers on physical risks, we seek to reduce unrewarded climate and carbon risk. Collaboration is core to how we deliver our approach, well evidenced through the Climate Action 100+ successful engagement with Shell PLC.
This year, we agreed as a Committee to directly engage on our members' behalf with those companies where our assets are invested, to better understand their approach to managing the physical risks of climate change. We're attending selected company Annual General Meetings (AGMs) to ask questions of Boards regarding their climate change performance and future actions.
We have continued to be active in our support for the work of the Task Force on Climate-related Financial Disclosure (TCFD) and we report in line with the TCFD recommendations. Following our launch as co-founders of the Transition Pathway Initiative (TPI) in 2016, we are delighted to see how important a framework it has become for asset owners to assess how companies are transitioning to a low-carbon economy. We only see this increasing in the future.
Being open and transparent about the Fund, its benefits and how we invest is a core principle. Our Board and member representatives actively engage with our members and other stakeholders to ensure the Fund is aware and can respond effectively to all member and stakeholder concerns.
In all the complex decisions we take as a Pensions Committee, we recognise our legal duty to act in the best interests of our members. Our top priority is to ensure that the pensions of our past, present and future members are secure and well managed.