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Eco ETFs: Understanding and Investing in Sustainability

Climate Finance
Summary

This article decodes how ecological ETFs work, how to spot truly sustainable funds, and how to align your investments with your environmental values. It explains key approaches like best-in-class, exclusions, and thematic strategies (renewables, water, hydrogen), as well as how to choose funds based on your goals. It also highlights tools like Greenfin and Article 9 classification to avoid greenwashing. Finally, it shows how ETFs and carbon allowances—available via Homaio—can work together to build a portfolio that drives impact and performance.

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Do you wish for your savings to reflect your values? That your investments actively contribute to a more sustainable future? You have heard about ecological ETFs but wonder how they actually work. How can you combine financial performance with environmental convictions? What exactly is an ecology-focused ETF, how do you choose one, and are they all as "green" as they claim? It is time to shed light on these financial tools to enable you to make informed decisions that align with both the planet and your portfolio.

Understanding Ecological ETFs: What Are They?

Before diving into ecological specifics, it is essential to understand what an ETF is. An ETF (Exchange-Traded Fund) is a financial product that allows you to invest in a single transaction into a basket of dozens, or even hundreds, of companies. It works like an investment fund but trades on the stock exchange like a share. The goal of an ETF is to replicate the performance of a reference stock market index (such as the CAC 40, the S&P 500, or a more specialized index).

This type of product has two major advantages that have contributed to its popularity:

  • Diversification: By buying a single share of an ETF, you bet on the collective performance of many companies. The risk is thus diluted. If one company in the index encounters difficulties, its decline can be offset by the rise of others.
  • Reduced fees: Unlike actively managed funds where managers try to "beat the market" through constant arbitrage, an ETF passively replicates an index. Management fees are therefore significantly lower.

The Specificity of an "Ecological" ETF

The term "ecological ETF" is not an official category but rather a generic label to designate ETFs that select companies in their portfolios based on environmental criteria. Instead of simply tracking a broad index like the CAC 40, these funds follow specialized indices that filter companies to keep only those working for ecological transition or presenting the best environmental practices.

These funds may focus on specific themes such as renewable energies, water management, future mobility, or the circular economy. The idea is to direct capital towards the actors who are building the world of tomorrow while offering investors growth potential associated with these future-oriented sectors.

How Does an ETF Become "Green"? Selection Methods

The true "ecological" value of an ETF lies in the rigor of its selection method. How can a fund ensure that the companies it includes are truly virtuous? Several strategies, often combined, are used to construct these sustainable indices.

  1. The "Best-in-Class" approach: This method consists of selecting, within each industry sector (even the most polluting), the companies demonstrating the best ESG (Environmental, Social, and Governance) practices. The idea is not to exclude an entire sector but to encourage top performers to continue their efforts.
  2. The exclusion approach: This is the simplest method. It consists of purely excluding companies from sectors considered controversial or harmful to the environment. Fossil fuels (coal, oil), tobacco, or armaments are often the primary targets.
  3. The thematic (or sectoral) approach: Here, the fund focuses exclusively on companies whose core business is directly related to an environmental solution. An ETF focusing on renewable energies will only select companies producing solar, wind, etc.
  4. The "Best-of-Universe" approach: This strategy groups companies that rate highest on specific environmental criteria (CO2 emissions, waste management, etc.), across all sectors, without seeking to represent each sector.
Investing in sustainable development means supporting companies working for a better world. This approach relies on ESG criteria to assess companies' commitment. They strive to protect the environment, ensure good working conditions, and operate according to responsible governance that promotes diversity and respects all stakeholders.

Labels to Guide You

To help investors navigate, several labels and regulations have emerged. They provide guarantees regarding the sustainability approach of funds.

  • The French ISR label: It guarantees that the fund integrates ESG criteria into its analysis. It is a mark of transparency but is often considered not very restrictive and does not impose strong sector exclusions.
  • The French Greenfin label: Much stricter, this label is dedicated to green finance. It excludes companies from fossil fuels and nuclear sectors and ensures that the financed activities have a positive environmental impact.
  • The European SFDR regulation: It classifies funds into two main categories:    
    • Article 8: Funds that "promote" environmental or social characteristics.
    • Article 9: Funds with an explicit "sustainable investment objective." These are logically considered to have a more direct and measurable impact.
  • Paris-Aligned Benchmarks (PAB): These European indices are designed to align with the Paris Agreement’s objective of limiting warming to 1.5°C. They impose drastic reductions in the portfolio's carbon intensity.

Beware of Greenwashing

The notion of ecology is complex. Producing solar panels requires mineral extraction, and recycling plastic emits greenhouse gases. There is no perfect solution. Some ETFs, especially the more general ones, may include companies whose ecological commitment is more of a marketing argument than a deep reality. Take time to read the fund's documentation (the Key Investor Information Document) and review its main holdings to ensure they correspond to your vision of ecology.

The Main Families of ETFs for Sustainable Investment

The ecological ETF market is vast and covers many themes. Here is an overview of the main categories, with examples to illustrate their diversity.

Renewable Energy ETFs

These funds are at the heart of the energy transition. They invest in leading companies in solar, wind, geothermal energy, or green technologies. It is a direct way to finance the phasing out of fossil fuels.

ETF NameISINAnnual Fees (%)Focus
iShares Global Clean Energy UCITS ETFIE00B1XNHC340.65%Global leaders in clean energy
Amundi MSCI New Energy ESG Screened UCITS ETFFR00105247770.60%Alternative energies and energy efficiency
L&G Clean Energy UCITS ETFIE00BK5BCH800.49%Actors in the clean energy value chain

Low Carbon and Paris-Agreement Aligned ETFs

Rather than focusing on a single sector, these ETFs adopt a broader approach. They start from a large index (global, European...) and exclude the most polluting companies to keep only those aligned with a decarbonization trajectory.

ETF NameISINAnnual Fees (%)Focus
Amundi S&P 500 Climate Net Zero Ambition PABIE000O5FBC470.07%S&P 500 companies aligned with the Paris Agreement
Lyxor S&P Eurozone Paris-Aligned Climate (PAB)LU21952260680.20%Low-carbon leaders in the Eurozone (PEA eligible)
Xtrackers MSCI World ESG UCITS ETFIE00BZ02LR440.20%Global selection of companies with solid ESG practices and low carbon footprint

Thematic ETFs: Water, Hydrogen, and More

For investors who wish to target a specific environmental issue, thematic ETFs are an ideal solution.

Water: Access to potable water, sanitation, and water management are major global challenges. Water ETFs invest in companies providing solutions in this crucial sector.

ETF NameISINAnnual Fees (%)Focus
iShares Global Water UCITS ETFIE00B1TXK6270.65%Global companies in water management and distribution
Lyxor PEA Water (World Water) UCITS ETFFR00118823640.60%Global water players (PEA eligible)
L&G Clean Water UCITS ETFIE00BK5BC8910.49%Technologies and services for clean water

Hydrogen: Considered a future energy vector, especially for storing renewable energies and decarbonizing heavy industry, hydrogen attracts considerable investment. However, note that not all hydrogen is "green"; its production can be highly carbon-intensive. These ETFs focus on companies developing the clean hydrogen economy.

ETF NameISINAnnual Fees (%)Focus
L&G Hydrogen Economy UCITS ETFIE00BMYDM7940.49%Hydrogen value chain, from production to use
VanEck Hydrogen Economy UCITS ETFIE00BMDH15380.55%Actors of the hydrogen economy

How to Choose the Right Ecological ETF for Your Portfolio?

With such abundant options, making a choice might seem complex. Here is a three-step approach to help you select the funds that suit you.

1. Define Your Goals and Convictions

Start by asking yourself what "ecology" means to you.

  • Do you want to radically exclude certain sectors (fossil fuels, nuclear)?
  • Do you prefer to actively finance solutions (renewables, water, circular economy)?
  • Do you simply want to reduce the carbon footprint of your overall portfolio?

Your answer will guide your search towards exclusion, thematic, or low-carbon ETFs. Also consider your investor profile: an ETF heavily focused on an emerging technology like hydrogen will be riskier than a diversified low-carbon ETF spanning hundreds of global companies.

2. Analyze the Fund’s Composition

Do not rely solely on the ETF’s name. Dive into the details.

  • Review the top holdings: The list of the 10 largest companies in the fund will give you a good idea of its actual composition. Are these companies aligned with your values?
  • Check the exclusion policy: The Key Investor Information Document specifies excluded sectors and practices. This is crucial to avoid unpleasant surprises.
  • Analyze the reference index: Understanding the methodology of the index tracked by the ETF is the best way to grasp its selection logic.

Expert Advice

Diversification remains key. Just as it is not advisable to put all your money into a single stock, relying on a single thematic ETF can be risky. Consider building a balanced portfolio by combining a broad, low-carbon "core" ETF with one or two more targeted thematic ETFs to bet on strong convictions without overexposing your capital.

3. Consider Fees and Availability

Finally, practical aspects matter.

  • Ongoing fees (TER): They typically range from 0.07% for larger ETFs to over 0.60% for more thematic ones. Over the long term, even a small fee difference can significantly impact final performance.
  • Tax-advantaged wrappers: Check if the ETF is eligible for the PEA (French stock savings plan), which offers a significant tax benefit after 5 years of holding. Eligible ETFs generally invest in Europe. For others, you will need to go through a standard securities account (CTO) or a life insurance plan.

Beyond ETFs: Diversify Your Impact with Carbon Allowances

Investing in ecological ETFs is an excellent way to support companies building a sustainable future. It is an approach to finance the "good" actors of the economy. But there is another, more direct way to act on the climate: making pollution more expensive.

This is precisely what we offer at Homaio. We make accessible a powerful lever until now reserved for experts: European carbon allowances (EUAs). The principle is simple: polluting industries in Europe are required to buy "pollution rights" for each ton of CO2 they emit. By purchasing these allowances as an investor, you remove them from the market. You create scarcity that drives up their price, thereby encouraging industries to invest in cleaner technologies to reduce their costs.

Investing in carbon allowances via Homaio offers you:

  • A direct and measurable impact: Each allowance held corresponds to one ton of CO2 that will not be emitted by a polluter.
  • Access to a financial asset uncorrelated with stock markets: The performance of carbon allowances depends on climate policies and supply/demand dynamics, not on stock market health. It is an excellent diversification tool.
  • Combining performance and ecology: You actively participate in decarbonizing industry while aiming for financial performance.

Thinking of your wealth sustainably means combining several strategies. Ecological ETFs allow you to bet on the champions of the transition, while carbon allowances act as a direct lever to penalize pollution. These two approaches are not opposed but deeply complementary.

Responsible investing has ceased to be a niche to become a major movement. Ecological ETFs provide a simple, diversified, and low-cost tool to take part. By carefully choosing funds that match your convictions and integrating them into a comprehensive wealth strategy, you can really make a difference. You hold the power to direct your capital towards tomorrow’s solutions and make your savings an engine of positive change.

FAQ: Your Questions About Ecological ETFs

Is an Ecological ETF Necessarily Less Performing Than a Classic ETF?

No, this is a misconception. Numerous studies have shown that in the long term, integrating ESG criteria does not negatively impact performance and may even improve it. Companies well managed environmentally and socially are often more resilient and better prepared for future risks. Furthermore, sectors related to ecological transition (clean energy, sustainable mobility...) benefit from strong structural trends that can make them significant growth drivers for decades to come.

What Is the Difference Between an "Article 8" and "Article 9" ETF (SFDR)?

This is a key distinction in European regulation. An Article 8 ETF "promotes" sustainable characteristics. It applies ESG filters but its primary objective remains financial. An Article 9 ETF has a clear and measurable "sustainable investment objective." For example, an ETF explicitly aiming to finance renewable energies to reduce CO2 emissions. For maximum impact, Article 9 funds are usually preferred.

How Can I Verify if an ETF Is Truly "Green"?

The best approach is to exercise due diligence. Do not rely solely on the commercial name.

  1. Read the Key Investor Information Document (KIID): It summarizes the strategy, objectives, and risks.
  2. Analyze the top 10 holdings: They are always listed on your broker’s fund page or on specialized sites. Do these companies correspond to your idea of ecology?
  3. Check the labels: Labels like Greenfin or an Article 9 classification are strong indicators of the fund's commitment.

Can I Hold Ecological ETFs in Any Investment Account?

It depends on the ETF. To benefit from the favorable taxation of the PEA (French Equity Savings Plan), the ETF must be predominantly invested in European companies. Many Europe-focused ecological ETFs are eligible. For global ETFs (invested in the USA, Asia...), you will need a regular securities account (CTO) or a life insurance plan. Life insurance is indeed an excellent wrapper to build a diversified portfolio of responsible ETFs.

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