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Can green finance weather the Trump storm?

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Peter Tankov
Professor of Quantitative Finance at ENSAE (IP Paris)
David Zerbib
Olivier David Zerbib
Researcher at CREST and Assistant Professor at ENSAE (IP Paris)
Key takeaways
  • Green finance, understood as the allocation of capital for the environmental transition, is being called into question for political motives.
  • In addition, the funding allocated to the transition falls far short of what is needed to keep global temperatures within acceptable limits.
  • Beyond necessary government interventions, promoting training, information sharing, investor coalitions, and open access to environmental data would help engage a wide range of actors in sustainable finance and strengthen support for the ecological transition.
  • Academic research highlights the growing environmental risks, the financial relevance of which could help convince hesitant investors and public authorities, while moving beyond the notion of ESG to focus more on impact investing.

Green fin­ance, defined as the alloc­a­tion of cap­it­al to sup­port the eco­lo­gic­al trans­ition, is under­go­ing a tur­bu­lent peri­od. It is being called into ques­tion for polit­ic­al reas­ons, par­tic­u­larly since Don­ald Trump’s return to power in early 2025, and because it has become less prof­it­able since the energy shock and the rise in interest rates fol­low­ing the war in Ukraine. Yet, there is a com­pel­ling need for fin­ance to go green: among oth­er things, the cli­mate emer­gency is intensi­fy­ing, and the need for fin­an­cing to lim­it glob­al warm­ing to a reas­on­able level remains sig­ni­fic­ant. There are reas­ons for hope, how­ever: recent research in green fin­ance has giv­en us a bet­ter under­stand­ing of the mech­an­isms investors can use to pres­sure com­pan­ies to go green and has iden­ti­fied tools that could sig­ni­fic­antly bend the emis­sions curve. Nev­er­the­less, this will require a strong and con­cer­ted effort from civil soci­ety, aca­demia, and green investors, who will need to play a great­er role to com­pensate for the lack of ambi­tion dis­played by pub­lic authorities.

A US-led backlash against a backdrop of unfavourable global macro-political conditions

Since Don­ald Trump’s first pres­id­en­tial term, invest­ment incor­por­at­ing envir­on­ment­al, social, and gov­ernance (ESG) cri­ter­ia has been at the heart of polit­ic­al debates in the United States. Some US politi­cians, such as Florida’s Repub­lic­an gov­ernor Ron DeS­antis, described these prac­tices as “woke invest­ment,” that is, polit­ic­ally motiv­ated ini­ti­at­ives that are deemed excess­ively pro­gress­ive. Over the past few years, states such as Texas and Flor­ida have restric­ted the use of ESG cri­ter­ia in the man­age­ment of pub­lic funds. In addi­tion, fol­low­ing massive with­draw­als of pub­lic cap­it­al from their ESG funds, sev­er­al major US asset man­agers have releg­ated ESG con­sid­er­a­tions to the back­ground to lim­it polit­ic­al and repu­ta­tion­al risks. As a res­ult, faced with polit­ic­al pres­sure in the United States and threats of defec­tion from US fin­an­cial organ­isa­tions, the Net Zero alli­ances of fin­an­cial insti­tu­tions (NZIA, GFANZ, NZAM) have been dis­solved, have announced a down­ward revi­sion, or even the remov­al of their cli­mate targets.

Don­ald Trump’s return to the White House in 2025 has cemen­ted this back­lash in reg­u­la­tion. For example, the Secur­it­ies and Exchange Com­mis­sion (SEC) has stopped defend­ing its Cli­mate Dis­clos­ure rule, and the US Depart­ment of Labor is con­sid­er­ing repeal­ing the Invest­ment Duties rule, which allowed pen­sion funds to use ESG cri­ter­ia. In terms of cor­por­ate gov­ernance, the SEC has rein­stated very per­missive stand­ards for reject­ing share­hold­er res­ol­u­tions on cli­mate issues. With regard to the devel­op­ment of “green” infra­struc­ture, sub­sidies for pro­jects con­trib­ut­ing to green­house gas reduc­tion have been can­celled, and new wind tur­bine per­mits have been suspended.

This polit­ic­al back­lash in the US is com­poun­ded by an unfa­vour­able glob­al macro-fin­an­cial envir­on­ment. The eco­nom­ic slow­down, com­bined with per­sist­ent infla­tion fuelled by high­er tar­iffs, has brought many energy trans­ition invest­ment pro­jects to a halt. Fur­ther­more, the increase in armed con­flicts and the expan­sion­ist ambi­tions of cer­tain coun­tries are ham­per­ing the devel­op­ment of green fin­ance, which is suf­fer­ing from increased mil­it­ary spend­ing and reduced cooper­a­tion between coun­tries. As a res­ult, faced with declin­ing returns on ESG assets, some investors have turned away from green invest­ing in search of fin­an­cial performance.

Inherent obstacles to the development of green finance

In addi­tion, the prac­tice of envir­on­ment­al fin­ance has not yet reached matur­ity. As far as investors are con­cerned, although aca­dem­ic research is start­ing to provide a good under­stand­ing of impact invest­ment mech­an­isms, the range of funds offer­ing this type of invest­ment remains insuf­fi­ciently developed com­pared with the offer of tra­di­tion­al “green funds,” and impact meas­ure­ment indic­at­ors are not stand­ard­ised, par­tic­u­larly with regard to non-cli­mate impacts on nature.

Moreover, reg­u­lat­ory frame­works are frag­men­ted and still under devel­op­ment in most coun­tries. In some cases, they are even being revised to make them less restrict­ive (see, in par­tic­u­lar, the EU Omni­bus Act, which aims to reduce the ambi­tions of the Cor­por­ate Sus­tain­ab­il­ity Report­ing Dir­ect­ive [CSRD]), due to fears of incom­pat­ib­il­ity between the socio-envir­on­ment­al object­ives of sus­tain­able fin­ance and the per­ceived or real risks of los­ing com­pet­it­ive­ness. This lack of ambi­tion is also reflec­ted in pub­lic policies where, for example, sup­port for the eco­lo­gic­al trans­ition still coex­ists with fossil fuel sub­sidies in many countries.

As for civil soci­ety, it is still insuf­fi­ciently involved in sup­port­ing sus­tain­able invest­ment. This is due to a lack of inform­a­tion on the pres­sures exer­ted by human activ­ity on cli­mate and bio­lo­gic­al equi­lib­ria, and on the levers for action that sus­tain­able fin­ance could offer. Addi­tion­ally, gre­en­wash­ing by many com­pan­ies, albeit to vary­ing degrees, is under­min­ing investor con­fid­ence and commitment.

As a res­ult, the fund­ing alloc­ated to the trans­ition is still well below the level needed to keep glob­al tem­per­at­ures at a reas­on­able level, par­tic­u­larly in emer­ging coun­tries. Accord­ing to the Cli­mate Policy Ini­ti­at­ive, annu­al cli­mate fin­ance flows would need to increase five­fold by 2030 – from $1.46 tril­lion to $7.4 tril­lion – to stay on track for a 1.5°C glob­al tem­per­at­ure rise.

Positive signs and reasons for hope

Yet, there are good reas­ons to keep hope alive, as the glob­al momentum for sus­tain­able fin­ance and devel­op­ments in research on this top­ic are favour­able. Indeed, green invest­ing is gain­ing momentum and acquir­ing innov­at­ive tools. In 2024, it accoun­ted for $2 tril­lion, twice as much as invest­ments in fossil fuels1, con­trib­ut­ing to the deep­en­ing of green mar­kets (e.g., the stock of green and sus­tain­able bonds accoun­ted for $5.4 tril­lion in Q3 20242). In terms of pri­cing, com­pan­ies with the largest envir­on­ment­al foot­prints fin­ance their debt at a high­er cost than the oth­ers via a “brown premi­um3.” In addi­tion, col­lect­ive ini­ti­at­ives con­tin­ue to flour­ish: for example, the Just Energy Trans­ition Part­ner­ships are expand­ing (e.g., in Seneg­al with €2.5 bil­lion) and cre­at­ing a blen­ded fin­ance mod­el to phase out coal in emer­ging mar­kets4. All this is rein­forced by the devel­op­ment of trans­ition plans to assess com­pan­ies’ align­ment with the Par­is Agree­ment tar­gets. In 2023, one in four com­pan­ies assessed by the Car­bon Dis­clos­ure Pro­ject had a trans­ition plan com­pat­ible with a 1.5°C scen­ario, up 44% from the pre­vi­ous year5.

The favour­able momentum of green fin­ance is also observed in the indus­tri­al sec­tor. Sev­er­al indus­tries are green­ing quickly: for example, in the trans­port industry, more than one in five cars sold in 2024 was elec­tric6, up 25% from the pre­vi­ous year7. In addi­tion, innov­a­tion in green tech­no­logy is accel­er­at­ing: for example, the cost of a bat­tery pack fell by 20% between 2023 and 2024, open­ing up prom­ising pro­spects for massive devel­op­ment of energy stor­age8.

Finally, from a research per­spect­ive, sig­ni­fic­ant pro­gress is being made in under­stand­ing the mech­an­isms through which investors can incentiv­ise com­pan­ies to become green­er. In terms of ESG invest­ment screens, sev­er­al recent stud­ies9 show how neces­sary it is to build a port­fo­lio that takes into account the extern­al­it­ies and fin­an­cing needs of all com­pan­ies in the eco­nomy – not just those in the invest­ment port­fo­lio – to max­im­ise the addi­tion­al­ity of the invest­ment rel­at­ive to a coun­ter­fac­tu­al state. Moreover, the sig­ni­fic­ant bene­fits of share­hold­er engage­ment have been doc­u­mented by sev­er­al early empir­ic­al works10.

Levers for action by governments, society, and researchers

So, what levers can be used to har­ness fin­ance for an ambi­tious eco­lo­gic­al trans­ition in this chaot­ic envir­on­ment? Ideally, gov­ern­ments should rein­force the favour­able dynam­ics of green invest­ment by, among oth­ers: strength­en­ing fund­ing from pub­lic agen­cies and mul­ti­lat­er­al devel­op­ment banks to increase the num­ber of pro­jects fin­anced, thereby increas­ing the sup­ply of green fin­an­cial assets; sup­port­ing blen­ded fin­ance pro­jects to reduce the cost of cap­it­al for com­pan­ies con­trib­ut­ing to the eco­lo­gic­al trans­ition and cata­lyse an increase in private invest­ment; mak­ing the com­mit­ments made under the Net Zero alli­ances leg­ally bind­ing; har­mon­ising stand­ards and tax­onom­ies on an inter­na­tion­al scale; com­bat­ing gre­en­wash­ing (through the devel­op­ment of labels, rein­forced mon­it­or­ing, and even the intro­duc­tion of leg­al liab­il­ity); sup­port­ing green R&D; and repeal­ing fossil fuel sub­sidy policies.

How­ever, the polit­ic­al and geo­pol­it­ic­al envir­on­ments lead us to acknow­ledge that these ambi­tious bind­ing meas­ures are unlikely to be imple­men­ted in the near future. In this con­text, what room for man­oeuvre do civil soci­ety, busi­nesses, and investors have to com­pensate for gov­ern­ment inaction?

A first lever for action is to enable as many play­ers as pos­sible (uni­ver­sit­ies, com­pan­ies, muni­cip­al­it­ies, admin­is­tra­tions, asso­ci­ations, etc.) to devel­op train­ing and aware­ness-rais­ing pro­grammes on envir­on­ment­al issues and the avail­able sus­tain­able fin­ance instru­ments. Sup­port should also be giv­en to the devel­op­ment of ini­ti­at­ives pro­mot­ing investor coali­tions. This could strengthen share­hold­er act­iv­ism on envir­on­ment­al issues and ini­ti­at­ives to dis­sem­in­ate inform­a­tion widely to stake­hold­ers. Fur­ther­more, the devel­op­ment of free, open-source data plat­forms on com­pan­ies’ envir­on­ment­al foot­prints would give retail and small insti­tu­tion­al investors easy access to key met­rics. In addi­tion, sup­port for the eco­lo­gic­al trans­ition, which includes increas­ing the num­ber of impact funds offered by asset man­agers, would also bene­fit from the rise of envir­on­ment­ally-focused crowd­fund­ing platforms.

Finally, aca­dem­ic research has an import­ant role to play. It is essen­tial to sup­port research­ers and research pro­jects on envir­on­ment­al issues whose activ­it­ies are com­prom­ised in their home coun­try. Emphas­ising envir­on­ment­al risks, which are becom­ing increas­ingly threat­en­ing, and whose fin­an­cial mater­i­al­ity is not in ques­tion, could enable green fin­ance to regain the con­fid­ence of the most reluct­ant investors and pub­lic author­it­ies. How­ever, bey­ond these undeni­able risks, research needs to fur­ther ana­lyse the con­di­tions under which invest­ment can most effect­ively sup­port the eco­lo­gic­al trans­ition. In par­tic­u­lar, the focus should shift from ESG invest­ing to impact invest­ing, as ESG is a concept that encom­passes het­ero­gen­eous and some­times con­tra­dict­ory dimen­sions, expos­ing it to cri­ti­cism and facil­it­at­ing gre­en­wash­ing prac­tices. This is all the more import­ant giv­en that the com­mon ESG strategies are not the most effect­ive in spur­ring com­pan­ies to green their busi­ness models.

Conclusion

At the dawn of Don­ald Trump’s second term, green fin­ance is stalling polit­ic­ally and facing sys­tem­ic chal­lenges. Yet, recent advances in both tech­no­logy and aca­demia offer grounds for optim­ism. By mobil­ising research­ers, investors, and civil soci­ety, it is still pos­sible to har­ness fin­ance to achieve a path com­pat­ible with ambi­tious cli­mate object­ives. While the urgency is obvi­ous, the instru­ments are avail­able. What is needed now is the polit­ic­al and col­lect­ive will to mobil­ise them!

Ref­er­ences:

  • Bolton, P., Kac­per­czyk, M. T., 2021. Do investors care about car­bon risk? Journ­al of Fin­an­cial Eco­nom­ics 142, 517–549.
  • Green, D., Roth, B., 2024. The alloc­a­tion of socially respons­ible cap­it­al. Journ­al of Fin­ance, Forth­com­ing Paper.
  • Heeb, F., Köl­bel, J., 2024. The impact of cli­mate engage­ment: A field exper­i­ment. Work­ing Paper.
  • Hsu, P., Li, K., Tsou, C., 2023. The Pol­lu­tion Premi­um. Journ­al of Fin­ance 78, 1343–1392.
  • Oehmke, M., Opp, M. M., 2025. A The­ory of Socially Respons­ible Invest­ment. The Review of Eco­nom­ic Stud­ies 92, 1193–1225.
  • van der Kroft, B., Pala­cios, J., Rigo­bon, R., Zheng, S., 2025. Tim­ing sus­tain­able share­hold­er pro­pos­als in real asset invest­ments. Work­ing Paper.
  • Zer­bib, O. D., 2022. A Sus­tain­able Cap­it­al Asset Pri­cing Mod­el (S‑CAPM): Evid­ence from Envir­on­ment­al Integ­ra­tion and Sin Stock Exclu­sion. Review of Fin­ance 26, 1345–1388.
1https://​www​.iea​.org/​n​e​w​s​/​i​n​v​e​s​t​m​e​n​t​-​i​n​-​c​l​e​a​n​-​e​n​e​r​g​y​-​t​h​i​s​-​y​e​a​r​-​i​s​-​s​e​t​-​t​o​-​b​e​-​t​w​i​c​e​-​t​h​e​-​a​m​o​u​n​t​-​g​o​i​n​g​-​t​o​-​f​o​s​s​i​l​-​fuels
2https://​www​.cli​mate​bonds​.net/​r​e​s​o​u​r​c​e​s​/​p​r​e​s​s​-​r​e​l​e​a​s​e​s​/​2​0​2​4​/​1​1​/​g​l​o​b​a​l​-​g​s​s​-​m​a​r​k​e​t​-​s​u​r​g​e​s​-​u​s​d​-​5​4​-​t​r​i​l​l​i​on-q3
3Bolton and Kac­per­czyk, 2021; Zer­bib, 2022; Hsu, Li, and Tsou, 2023
4https://​www​.energy​po​licy​.columbia​.edu/​p​u​b​l​i​c​a​t​i​o​n​s​/​r​e​a​l​i​z​i​n​g​-​t​h​e​-​p​o​t​e​n​t​i​a​l​-​o​f​-​j​u​s​t​-​e​n​e​r​g​y​-​t​r​a​n​s​i​t​i​o​n​-​p​a​r​t​n​e​r​s​h​i​p​s​-​i​n​-​t​h​e​-​c​u​r​r​e​n​t​-​g​e​o​p​o​l​i​t​i​c​a​l​-​e​n​v​i​r​o​n​ment/
5https://​www​.cdp​.net/​e​n​/​c​l​i​m​a​t​e​-​t​r​a​n​s​i​t​i​o​n​-​plans
6https://​www​.iea​.org/​r​e​p​o​r​t​s​/​g​l​o​b​a​l​-​e​v​-​o​u​t​l​o​o​k​-​2​0​2​4​/​e​x​e​c​u​t​i​v​e​-​s​u​mmary
7https://​rho​mo​tion​.com/​n​e​w​s​/​o​v​e​r​-​1​7​-​m​i​l​l​i​o​n​-​e​v​s​-​s​o​l​d​-​i​n​-​2​0​2​4​-​r​e​c​o​r​d​-​year/
8https://​about​.bnef​.com/​b​l​o​g​/​l​i​t​h​i​u​m​-​i​o​n​-​b​a​t​t​e​r​y​-​p​a​c​k​-​p​r​i​c​e​s​-​s​e​e​-​l​a​r​g​e​s​t​-​d​r​o​p​-​s​i​n​c​e​-​2​0​1​7​-​f​a​l​l​i​n​g​-​t​o​-​1​1​5​-​p​e​r​-​k​i​l​o​w​a​t​t​-​h​o​u​r​-​b​l​o​o​m​b​e​r​gnef/
9https://​www​.iea​.org/​n​e​w​s​/​i​n​v​e​s​t​m​e​n​t​-​i​n​-​c​l​e​a​n​-​e​n​e​r​g​y​-​t​h​i​s​-​y​e​a​r​-​i​s​-​s​e​t​-​t​o​-​b​e​-​t​w​i​c​e​-​t​h​e​-​a​m​o​u​n​t​-​g​o​i​n​g​-​t​o​-​f​o​s​s​i​l​-​fuels
10https://​www​.cli​mate​bonds​.net/​r​e​s​o​u​r​c​e​s​/​p​r​e​s​s​-​r​e​l​e​a​s​e​s​/​2​0​2​4​/​1​1​/​g​l​o​b​a​l​-​g​s​s​-​m​a​r​k​e​t​-​s​u​r​g​e​s​-​u​s​d​-​5​4​-​t​r​i​l​l​i​on-q3

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