Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: ii

Ecofin Water & Power Opportunities Plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

Horizontal Aggregation Disclosure

X

3. Full name of person(s) subject to thenotification obligation: iii

Brewin Dolphin

4. Full name of shareholder(s)  (if different from 3.):iv

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

26 May 2016

6. Date on which issuer notified:

27 May 2016

7. Threshold(s) that is/are crossed orreached: vi, vii

11% [GB00B504KH32]

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

'6% CNV SUB 31/07/16 GBP1

GB00B504KH32

ORD GBP0.001

GB00B09LK252

Below 5%

Below 5%

Below 5%

Below 5%

N/A

N/A

N/A

N/A

5,090,444

1,373,529

N/A

N/A

1.9868%

0.5361%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

6,463,973

2.5229%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi

'6% CNV SUB 31/07/16 GBP1

ORD GBP0.001

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will ceaseto hold:

12. Date on which proxy holder will cease to holdvoting rights:

13. Additional information:

Figures based on shares in issue of 209,880,513 (Ord shares) & 46,336,519 (Cnv Sub shs) giving a total potential voting rights figure of 256,217,032.

Disclosure trigger due to individual horizontal aggregation on GB00B504KH32. Ratio = 1:1.7265 Percentage has decreased from 11.0352% to 10.9858% (disc quantity held [8788651/1.7265=5,090,444] / issued share capital [80,000,000/1.7265=46,336,519] x 100 = 10.9858%)

The indirect voting rights under (9) relate to shares held in client portfolios, managed by those firms, under discretionary investment management agreements.

14. Contact name:

Graham Brabbs

15. Contact telephone number:

0191 230 7190