Environmental Law · M&A
Environmental Due Diligence in M&A Transactions
Hidden environmental liabilities can represent between 5% and 30% of a transaction's price. Six analysis dimensions, three report formats, and full advice on SPA clauses: R&Ws, indemnities, escrow and RWI Insurance.
Why environmental DD is decisive in industrial M&A
In any merger or acquisition involving industrial assets, production facilities, land with a history of polluting activity, or companies subject to intensive environmental regulation, environmental due diligence is not a formality — it is the analysis that determines whether the deal closes, at what price, and how risks are allocated between buyer and seller.
Dobarro y Asociados' experience in environmental law and in M&A transactions involving industrial assets in Spain allows us to integrate legal-environmental analysis with SPA negotiation, ensuring the risks identified during DD are correctly reflected in the contractual clauses.
We cover the six key dimensions of environmental DD within 3 to 8 weeks, depending on the target's complexity and the format chosen.
Scope of analysis
The six dimensions of environmental DD
Each transaction requires an analysis proportional to the target's activity, sector and environmental history. These are the six dimensions our report covers.
Environmental authorisations and licences
Review of the status of all the target's current environmental authorisations: Integrated Environmental Authorisation (AAI), Environmental Impact Statement (DIA), discharge authorisations into public hydraulic or maritime-terrestrial domain, waste management licences (hazardous and non-hazardous) and compliance with their conditions. Identification of operations running without the required authorisation.
Sanctioning proceedings and environmental litigation
Identification of all administrative sanctioning proceedings ongoing or resolved in the last 5 years on environmental matters (emissions, waste, discharges, soil). Analysis of pending administrative litigation and active or latent environmental liability claims.
Historical liabilities: soil and water
Analysis of the site's industrial activity history to identify possible soil and groundwater contamination. Review of contaminated-soil declarations, existing preliminary studies or risk assessments, and the land's registry status. Liability can affect the acquirer even if unrelated to the cause of the contamination (Law 22/2011, RD 9/2005).
Compliance: PRTR, CSRD and RD 214/2025
Verification of compliance with applicable environmental reporting obligations: PRTR declarations (E-PRTR Regulation, pollutant emissions and transfers), CSRD sustainability reports (ESRS E1 to E5), and calculation and registration of the carbon footprint with the MITECO Registry (RD 214/2025). An undisclosed breach in the SPA is a direct source of an R&W claim.
Future CAPEX risks
Quantification of future investments needed to maintain the target's environmental compliance: facility adaptations to new emission limit values (ELVs), pending corrective measures set out in administrative decisions, foreseeable decontamination costs, and adaptation to regulations in the pipeline. Future CAPEX liabilities can represent between 5% and 30% of the transaction price.
Regulatory and sustainable finance risks
Analysis of risks arising from foreseeable regulatory changes (tighter ELVs, new waste legislation, expansion of the EU ETS), of the activity's alignment with the Green Taxonomy (EU 2020/852), and of the effects on access to finance labelled as sustainable. Assessment of the target's ESG profile and its impact on valuation and on the acquirer's reputation.
Formats
Three environmental DD report formats
Red Flag Report
Timeline: 2-3 weeksRapid identification of the target's most relevant environmental risks. An executive format geared towards the decision on whether to proceed with the transaction. Useful in early negotiation stages or when deadlines are very tight.
When: First approach · Pre-LOI due diligence · Competitive processes with short deadlines
Full Environmental DD Memorandum
Timeline: 4-8 weeksComplete analysis of the six dimensions with quantification of contingencies, identification of recommended SPA clauses, and a proposed price adjustment or earn-out. The standard for transactions of a certain size.
When: Transactions over €5M · Industrial targets · Regulated sectors · Targets with a complex environmental history
Environmental Vendor DD
Timeline: 3-6 weeksAdvice to the seller in preparing the environmental data room and drafting the vendor DD report to be provided to potential buyers. Reduces information asymmetry and speeds up closing.
When: Competitive sale processes · PE exits · Transactions with multiple potential buyers
Sale and purchase agreement
Environmental clauses in the SPA
Environmental DD only protects the buyer if its results are correctly reflected in the sale and purchase agreement. These are the usual contractual mechanisms.
Environmental R&Ws
Representations & Warranties given by the seller in the SPA regarding the target's environmental compliance status: authorisations in force, absence of undisclosed sanctioning proceedings, no known soil or water damage, and correct PRTR and CSRD compliance. A breach entitles the buyer to claim indemnification from the seller.
Specific indemnities
Indemnification clauses aimed at specific environmental liabilities identified during DD but difficult to quantify exactly: pending penalties, estimated decontamination costs, PRTR contingencies. Unlike general R&Ws, indemnities do not require proving a breach of a representation, only the materialisation of the liability.
Earn-out and escrow
Escrow is the retention of part of the price in deposit until identified environmental contingencies are resolved. The earn-out ties part of the price to a favourable outcome for specific environmental liabilities (judgment, closure of proceedings, final decontamination cost). Both mechanisms align the seller's incentives with resolving the liability post-closing.
RWI Insurance
Insurance covering breach of the environmental R&Ws included in the SPA. The insurer assumes the risk facing the buyer (buy-side) or the sellers (sell-side). Especially useful when the seller limits its post-closing exposure, when there is uncertainty over the amount of a liability, or when the buyer is a private equity fund requiring a clean exit.
How we work
Environmental M&A DD services
Pre-DD: preliminary environmental feasibility analysis
Rapid assessment of the target's environmental profile before formalising the offer, to decide whether to proceed with a deeper environmental DD and in which dimensions.
Drafting the environmental DD report
Drafting of the Red Flag Report or the Full Environmental DD Memorandum with quantification of contingencies and recommendations for the SPA.
Advice on environmental SPA clauses
Negotiation and drafting of environmental R&Ws, specific indemnities, earn-out/escrow mechanisms, and coordination with the RWI Insurance broker.
Vendor DD: preparing the environmental data room
Advice to the seller in gathering environmental documentation, identifying its own risks, and preparing the vendor DD report.
Frequently asked questions about environmental M&A due diligence
What does environmental due diligence cover in an M&A transaction in Spain?
Environmental DD in M&A covers six dimensions: (1) current environmental authorisations and licences (AAI, EIA, discharges, waste); (2) sanctioning proceedings and environmental litigation; (3) historical liabilities in contaminated soil and water; (4) PRTR, CSRD and RD 214/2025 compliance; (5) future CAPEX risks; and (6) regulatory and sustainable finance risks. The usual timeline is 3 to 8 weeks, in Red Flag, Full Memorandum or Vendor DD format.
How much can hidden environmental liabilities represent in the transaction price?
Hidden environmental liabilities can represent between 5% and 30% of the transaction price. In sectors such as chemicals, metallurgy, waste treatment or mining, historical soil and water liabilities can exceed the value of the asset itself. Environmental DD is the only way to quantify and contractually allocate these risks before closing.
What are environmental R&Ws in the SPA and how do they protect the buyer?
Environmental R&Ws (Representations & Warranties) are seller representations in the SPA regarding the target's environmental compliance status: authorisations in force, absence of undisclosed proceedings, no known soil damage, and correct PRTR and CSRD compliance. If a representation proves false or incomplete, the buyer is entitled to claim indemnification. R&Ws are complemented by specific indemnities for concrete liabilities identified during DD.
What is RWI Insurance and when is it worth taking out in an M&A transaction?
RWI Insurance (Representations & Warranties Insurance) covers breach of the R&Ws included in the SPA, transferring the risk to an insurer. It is worth taking out when the seller limits its post-closing exposure, when there are environmental liabilities of uncertain amount, when the buyer is a private equity fund requiring a clean exit, or when the environmental DD reveals risks with uncertain probability of materialising.