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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 Lecturer at ENSAE (IP Paris)
Key takeaways
  • Green finance, or the allocation of capital for environmental transition, is being called into question for political motives.
  • However, the climate emergency is intensifying, and significant funding is needed to limit global warming.
  • Furthermore, the funding allocated to the transition falls far short of what is needed to keep global temperatures within acceptable limits.
  • Nevertheless, green finance is developing innovative tools, and in the industrial sector, more than one in five cars sold in 2024 will be electric.
  • Possible levers for action include government intervention, but also research and training on environmental issues in institutions (universities, businesses).

Green finance, defined as the allo­ca­tion of cap­i­tal to sup­port the eco­log­i­cal tran­si­tion, is going through 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 an urgent need for finance to go green: among oth­er things, the cli­mate emer­gency is wors­en­ing 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 reduce emis­sions. How­ev­er, this will require a broad 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 shown by governments.

A U.S. led backlash against a backdrop of unfavourable global macro-political conditions

Since Don­ald Trump’s first term, invest­ment incor­po­rat­ing envi­ron­men­tal, social and gov­er­nance (ESG) cri­te­ria has been at the heart of polit­i­cal debate in the Unit­ed States. Some US politi­cians, such as Florida’s Repub­li­can gov­er­nor Ron DeSan­tis, describe these prac­tices as “woke invest­ment”, i.e. polit­i­cal­ly moti­vat­ed ini­tia­tives that are con­sid­ered exces­sive­ly pro­gres­sive. In recent 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 insti­tu­tions, the Net Zero alliances of finan­cial insti­tu­tions (NZIA, GFANZ, NZAM) have been dis­solved or 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 pro­lif­er­a­tion of wars and the expan­sion­ist poli­cies 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 aban­doned green invest­ing in favour of finan­cial performance.

Inherent obstacles to the development of green finance

Fur­ther­more, envi­ron­men­tal finance is still in its infan­cy. On the investor side, although impact invest­ment mech­a­nisms are begin­ning to be bet­ter under­stood by aca­d­e­m­ic research, the range of funds offer­ing this type of invest­ment remains insuf­fi­cient­ly devel­oped com­pared to tra­di­tion­al “green funds”. Impact mea­sure­ment indi­ca­tors are not stan­dard­ised, par­tic­u­lar­ly with regard to non-cli­mate impacts on nature.

Fur­ther­more, 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]). This is 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 not suf­fi­cient­ly involved in sup­port­ing sus­tain­able invest­ment. This is due to a lack of infor­ma­tion on the pres­sures exert­ed by human activ­i­ty on cli­mate and bio­log­i­cal bal­ances, and on the levers for action that sus­tain­able finance could offer. Fur­ther­more, 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

How­ev­er, there are good rea­sons to remain hope­ful, as the glob­al momen­tum for sus­tain­able finance and devel­op­ments in research on this top­ic are favourable. Indeed, green invest­ment is accel­er­at­ing and acquir­ing inno­v­a­tive tools. In 2024, it rep­re­sent­ed $2 tril­lion, twice as much as invest­ment in fos­sil fuels1, con­tribut­ing to the fur­ther devel­op­ment of green mar­kets (e.g. the stock of green and sus­tain­able bonds rep­re­sent­ed $5.4 tril­lion in Q3 20242). In terms of pric­ing, com­pa­nies with the largest envi­ron­men­tal foot­print finance their debt at a high­er cost than oth­ers via a “brown pre­mi­um3”. In addi­tion, col­lec­tive ini­tia­tives con­tin­ue to devel­op: for exam­ple, 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.

Favourable momen­tum for green financ­ing can also be seen in the indus­tri­al sec­tor. Sev­er­al sec­tors are green­ing very quick­ly: for exam­ple, in the trans­port sec­tor, more than one in five cars sold in 2024 was elec­tric6, up 25% from the pre­vi­ous year7. In addi­tion, inno­va­tion in green tech­nol­o­gy is speed­ing up: for exam­ple, the cost of a bat­tery pack fell by 20% between 2023 and 2024, open­ing up excit­ing prospects for the mas­sive devel­op­ment of ener­gy stor­age8.

The fund­ing allo­cat­ed to the tran­si­tion is still well below the lev­el need­ed to keep glob­al tem­per­a­tures at a rea­son­able level

Final­ly, in the field of research, there is a sig­nif­i­cant increase in under­stand­ing of the mech­a­nisms through which investors can push com­pa­nies to become green­er. In terms of ESG invest­ment fil­ters, 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. This is in order to max­imise the addi­tion­al­i­ty of the invest­ment rel­a­tive to a coun­ter­fac­tu­al sce­nario. In addi­tion, the sig­nif­i­cant ben­e­fits of share­hold­er engage­ment have been doc­u­ment­ed by sev­er­al ear­ly empir­i­cal stud­ies10.

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 strength­en the momen­tum behind green invest­ment by increas­ing fund­ing for pub­lic agen­cies and mul­ti­lat­er­al devel­op­ment banks. This would increase the num­ber of projects financed and boost the sup­ply of green finan­cial assets by sup­port­ing blend­ed finance projects, there­by reduc­ing the cost of cap­i­tal for com­pa­nies con­tribut­ing to the eco­log­i­cal tran­si­tion and catalysing a surge in pri­vate invest­ment. With this in mind, com­mit­ments made under the Net Zero alliances should be made legal­ly bind­ing, and stan­dards and tax­onomies should be har­monised at the inter­na­tion­al lev­el. It would also be pos­si­ble to com­bat green­wash­ing (through the devel­op­ment of labels, enhanced mon­i­tor­ing and even the intro­duc­tion of legal lia­bil­i­ty), sup­port green R&D, or even repeal fos­sil fuel sub­sidy policies.

How­ev­er, the polit­i­cal and geopo­lit­i­cal con­text leads us to recog­nise 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 actors 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. In addi­tion, the devel­op­ment of free, open-source data plat­forms on com­pa­nies’ envi­ron­men­tal foot­prints would give indi­vid­ual and small insti­tu­tion­al investors easy access to key met­rics. Among oth­er pos­si­ble impacts, sup­port for the eco­log­i­cal tran­si­tion, which involves in par­tic­u­lar strength­en­ing the range of impact funds offered by asset man­agers, would also ben­e­fit from the rise of envi­ron­men­tal­ly-focused crowd­fund­ing platforms.

Final­ly, 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 coun­try of ori­gin. Empha­sis­ing envi­ron­men­tal risks, which are becom­ing increas­ing­ly seri­ous and whose poten­tial finan­cial impact is unde­ni­able, could poten­tial­ly 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 must 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 most com­mon ESG strate­gies are not the most effec­tive in push­ing com­pa­nies to green their busi­ness models.

Conclusion

As Don­ald Trump begins his sec­ond term, green finance is stalling polit­i­cal­ly and fac­ing sys­temic chal­lenges. How­ev­er, recent advances in both tech­nol­o­gy and acad­e­mia offer grounds for opti­mism. By mobil­is­ing researchers, investors and civ­il soci­ety, it is still pos­si­ble to put finance on a path com­pat­i­ble with ambi­tious cli­mate goals. While the urgency is clear, the tools are avail­able. What is need­ed now is the polit­i­cal and col­lec­tive will to use 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., K¨olbel, 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​.ener​gy​pol​i​cy​.colum​bia​.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/
9cf. Green and Roth, 2025; Oehmke and Opp, 2025
10See Heeb and Köl­bel, 2024; van der Kroft et al., 2025

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