CO2 / PPM /Annual Averages / Data Source: noaa.gov 1980 338.91ppm 1981 340.11ppm 1982 340.86ppm 1983 342.53ppm 1984 344.07ppm 1985 345.54ppm 1986 346.97ppm 1987 348.68ppm 1988 351.16ppm 1989 352.78ppm 1990 354.05ppm 1991 355.39ppm 1992 356.1ppm 1993 356.83ppm 1994 358.33ppm 1995 360.18ppm 1996 361.93ppm 1997 363.04ppm 1998 365.7ppm 1999 367.8ppm 2000 368.97ppm 2001 370.57ppm 2002 372.59ppm 2003 375.14ppm 2004 376.96ppm 2005 378.97ppm 2006 381.13ppm 2007 382.9ppm 2008 385.01ppm 2009 386.5ppm 2010 388.76ppm 2011 390.63ppm 2012 392.65ppm 2013 395.39ppm 2014 397.34ppm 2015 399.65ppm 2016 403.09ppm 2017 405.22ppm 2018 407.62ppm 2019 410.07ppm 2020 412.44ppm 2021 414.72ppm 2022 418.56ppm 2023 421.08ppm 2024 424.61ppm 2025 427.35ppm
CO2 / PPM /Annual Averages / Data Source: noaa.gov 1980 338.91ppm 1981 340.11ppm 1982 340.86ppm 1983 342.53ppm 1984 344.07ppm 1985 345.54ppm 1986 346.97ppm 1987 348.68ppm 1988 351.16ppm 1989 352.78ppm 1990 354.05ppm 1991 355.39ppm 1992 356.1ppm 1993 356.83ppm 1994 358.33ppm 1995 360.18ppm 1996 361.93ppm 1997 363.04ppm 1998 365.7ppm 1999 367.8ppm 2000 368.97ppm 2001 370.57ppm 2002 372.59ppm 2003 375.14ppm 2004 376.96ppm 2005 378.97ppm 2006 381.13ppm 2007 382.9ppm 2008 385.01ppm 2009 386.5ppm 2010 388.76ppm 2011 390.63ppm 2012 392.65ppm 2013 395.39ppm 2014 397.34ppm 2015 399.65ppm 2016 403.09ppm 2017 405.22ppm 2018 407.62ppm 2019 410.07ppm 2020 412.44ppm 2021 414.72ppm 2022 418.56ppm 2023 421.08ppm 2024 424.61ppm 2025 427.35ppm
Briefs

CalPERS bets on real estate and equities as climate solution assets hit $60bn

US pension giant CalPERS has reported significant progress towards its goal of committing $100bn to climate solutions by 2030, with investments in real estate and public equities driving portfolio growth to nearly $60bn by the end of the first half of 2025.

The fund said the increase reflected both investment appreciation and new commitments, marking a major milestone just two years after setting its 2030 target.

CalPERS reported an investment return of 11.6% for the fiscal year, fuelled by strong performance in equities and private markets. Although details of its latest climate commitments have not yet been disclosed, last year the fund shifted more than $5bn of its equity holdings into a Climate Transition Index, designed as an alternative to conventional market-cap weighted indices. As of June 2025, $38bn – equivalent to 18% of CalPERS’ total equity portfolio – was invested using a factor-weighted approach.

In September, the fund announced a series of real estate commitments, including $1bn with Brookfield Asset Management and a further $400m with BentallGreenOak, supporting office, industrial and residential developments in Asia.

Despite political headwinds – including US president Trump’s withdrawal from the Paris Agreement and his dismissal of climate change as a “con job” – the Sacramento-based pension fund, which manages $556.2bn in assets, remains steadfast in its approach.

“In just two years, CalPERS has seen significant growth in its Climate Action Plan, growth that is driven by the energy transition,” said CalPERS CEO Marcie Frost. “Climate is a key megatrend, and CalPERS is committed to leading the way and finding the best investments on behalf of our members.”

However, CalPERS has faced criticism from campaign group California Common Good over the inclusion of fossil fuel companies within its climate solutions portfolio. The group highlighted the presence of firms such as BP, ExxonMobil and Chevron in the fund’s holdings.

In response, CalPERS said it had redefined its climate investments to focus on green revenues and that the companies in question play a role in financing low-carbon initiatives.

However,  Allie Lindstrom, senior strategist with the Sierra Club’s Sustainable Finance campaign, expressed concern about the continued inclusion of fossil fuel assets. “CalPERS’ climate action plan, which uses size as a signal of ambition and counts progress in billions, doesn’t demonstrate progress on the things that matter most: emissions avoided, communities served, and clean energy expanded. This isn’t a PR issue — it’s about how investment strategies need to shift in a changing economy. System-level risks require system-level solutions. For a fund of CalPERS’ size and influence, that means using its leverage to mitigate the systemic risks of climate change that threaten both the economy and its beneficiaries’ pensions. CalPERS should start by adopting climate solutions principles that set clear investment exclusions and clearly define the strategies needed for mitigation, adaptation, and transition.

The fund has appointed Mercer Investments LLC in 2023 and in 2024 to review and benchmark its net zero plan against key industry standards.


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CalPERS pushes back against greenwashing allegations

Renewables remain resilient: Peter Cashion on the outlook for US climate investing


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