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Climate Change

Key Documents
  • Climate Change Statement

White Mountains is an owner of insurance-related businesses and, as such, climate change has direct relevance to the performance of our company.

Climate Change Statement

Carbon dioxide and other greenhouse gases contribute to higher temperatures, sea level rise and weather events including droughts, wildfires, convective storms and hurricanes.  We do not manufacture products that produce carbon dioxide or other greenhouse gases, nor do we otherwise meaningfully impact the environment through our operations.  However, as the owner and operator of a diversified group of businesses in insurance, financial services and related sectors, we are exposed to risks that are exacerbated by climate change, in particular in our property and casualty insurance/reinsurance and municipal bond guaranty businesses.  Accordingly, in our risk management processes, we consider the potential impact of climate change on the nature of the risks we are assuming and the pricing for such risks.

We believe that we have an important role to play as a responsible corporate citizen on climate change matters.  Our corporate philanthropy reflects our commitment to the environment.

Our Approach

As part of the underwriting process, all of our businesses exposed to the impacts of climate change model expected losses based on the estimated frequency and severity of catastrophic events, then price for those expected losses plus an underwriting profit.  In addition, they model capital adequacy and use various techniques to protect our capital position, such as concentration limits, portfolio diversification strategies, outbound reinsurance and safety margins.  Our businesses use multiple techniques, metrics and data sources in the modeling process.  In doing so, they incorporate current data and science on climate change and frequently customize third party models and tools to enhance their accuracy and relevance.  At the same time, they recognize the limitations of these models. Additional measures to address climate change vary across our operating businesses:

  • Ark. Ark has launched an initiative that targets renewable energy clients including wind farms, solar plants, hydroelectric plants, geothermal plants and wave and tidal projects. In addition, Ark is implementing the evolving climate risk management guidelines of the UK Prudential Regulation Authority (PRA). In recent years, Ark has (i) established a climate change working group; (ii) undertaken a climate change risk assessment; (iii) analyzed climate change risk as part of its risk management framework; (iv) engaged with industry peers through the Lloyd’s Climate Change market group; (v) establishing executive responsibility and quarterly Board reporting for climate change risk; and (vii) incorporated a climate change statement and sustainable underwriting strategy as part of its business plan.
White Mountains Insurance Group, Ltd.
  • 26 Reid Street, Suite 601
    Hamilton HM 11, Bermuda

    441-278-3160

  • 23 South Main Street, Suite 3B
    Hanover, New Hampshire 03755

    603-640-2200

  • 265 Franklin Street, Suite
    901 Boston, Massachusetts 02110

    617-725-7122

  • 200 Hubbard Road
    Guilford, Connecticut 06437

    203-458-5823

[email protected]

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