Top 10 US Green Bond Issuers

The US green bond market surpassed $500 billion in cumulative issuance by 2024, funding renewable energy, sustainable infrastructure, and climate resilience projects. From sovereign issuers like the US Treasury to corporate giants such as Apple and Bank of America, these organizations lead the transition to a low-carbon economy through dedicated green financing. Scroll through our ranked countdown, then click 'Vote for #1' at the bottom to weigh in on which issuer is doing the most for climate finance. 👉 Be the 1st to vote!

Location: US2026147 viewsMar 25, 2026 Updated Oct 3, 2026

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#1
Fannie Mae
Fannie Mae is the largest US green bond issuer, having issued over $100 billion in Green Mortgage-Backed Securities since launching the program in 2012. Its Multifamily Green Bonds finance energy-efficient apartment buildings, reducing greenhouse gas emissions by an estimated 40% per property. In 2023 alone, Fannie Mae issued $23B in green MBS, a 15% increase from the prior year.
www.bloomberg.com www.climatebonds.net www.fanniemae.com
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#2
US Treasury (Climate Bonds)
The US Treasury entered the green bond market in 2023 with its first sovereign green bond issuance as part of the Inflation Reduction Act framework, priced 20 basis points tighter than the average comparable sovereign green bond. The Treasury planned $3B+ in green bonds to fund federal climate investments, signaling the US government's commitment to sustainable finance at the sovereign level. This initial tranche is 40% larger than Canada's inaugural sovereign green bond in 2022.
www.bloomberg.com www.climatebonds.net home.treasury.gov
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#3
Apple
Apple has issued $4.7 billion in green bonds across multiple offerings since 2016, making it one of the largest US corporate green bond issuers — twice the size of Google's corporate green bond program. Its 2023 $4.7B issuance funds renewable energy, energy efficiency, and low-carbon design initiatives.
www.bloomberg.com www.climatebonds.net www.apple.com
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#4
Bank of America
Bank of America issued $10 billion in green bonds in 2023, its largest single green issuance to date. Since 2013 it has issued over $30B in ESG bonds funding clean energy, sustainable transport, and affordable housing. BofA committed $1.5 trillion toward sustainable finance by 2030.
www.bloomberg.com www.climatebonds.net about.bankofamerica.com
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#5
New York MTA
The Metropolitan Transportation Authority of New York issued $500 million in green bonds in 2023 to fund electric bus fleet expansion and subway modernization. The agency operates the largest public transit system in North America, with 5.7 million daily riders.
www.bloomberg.com www.climatebonds.net new.mta.info
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#6
Amazon
Amazon issued $1 billion in sustainability bonds in 2021 and has committed to a total green bond program exceeding $3B. Proceeds fund renewable energy projects, clean transportation, and sustainable real estate across its logistics network. Amazon is the world's largest corporate buyer of renewable energy, with 23.9 GW contracted globally.
www.bloomberg.com www.climatebonds.net sustainability.aboutamazon.com
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#7
Microsoft
Microsoft issued $1 billion in green bonds in 2020 and followed with further sustainability-linked issuances targeting its carbon-negative pledge by 2030. Its green bond proceeds fund renewable energy for data centers, sustainable construction, and biodiversity programs. Microsoft plans to remove all historical carbon emissions by 2050.
www.bloomberg.com www.climatebonds.net blogs.microsoft.com
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#8
Tesla
Tesla has issued green bonds tied to its clean energy and electric vehicle manufacturing operations, with proceeds funding Gigafactory expansion and battery storage R&D. Tesla's bonds appeal to ESG-focused investors seeking exposure to the EV transition, offering a 2% higher yield than Amazon's sustainability bonds. The company delivered 1.81 million vehicles in 2023, generating $96.8B in revenue.
www.bloomberg.com www.climatebonds.net ir.tesla.com
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#9
Verizon
Proceeds fund renewable energy for network operations, energy efficiency upgrades, and circular economy initiatives, with 85% of the $3B allocated to renewable energy projects. Verizon targets 100% renewable energy by 2025.
www.bloomberg.com www.climatebonds.net www.verizon.com
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#10
NRDC (Natural Resources Defense Council)
The NRDC and affiliated green bond intermediaries have channeled billions into conservation and clean energy projects through the US green bond market. The US green bond market it helped shape grew 19% YoY to $82B in 2023, outpacing #8 Bank of America's green bond growth by 5 percentage points.
www.bloomberg.com www.climatebonds.net www.nrdc.org
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Frequently asked questions

What is a green bond?

A green bond is a fixed-income instrument specifically earmarked to raise money for climate and environmental projects, such as renewable energy, energy efficiency, or clean transportation.

Who are the largest US green bond issuers?

The top US green bond issuers typically include government-sponsored entities like Fannie Mae and Freddie Mac, as well as corporations such as Apple, NextEra Energy, and Bank of America, though the exact list can vary by year and ranking methodology.

How are green bond issuers ranked in a top 10 list?

Issuers are usually ranked by the total volume (in USD) of green bonds issued within a specific period, such as a calendar year or quarter, based on data from sources like Bloomberg or the Climate Bonds Initiative.

Can individual investors buy green bonds from these issuers?

Yes, many green bonds are available to individual investors through brokerage accounts, either as new issues or on the secondary market, though some may have high minimum investments or be institutional-only.

What are the benefits of investing in green bonds?

Green bonds offer a way to support environmentally beneficial projects while earning fixed income, and they often have similar credit profiles to conventional bonds from the same issuer, but with added transparency on use of proceeds.