Exhibit 10(f)-3
EASTERN


To:        Barclays Bank Plc, as Agent under the Guarantee and
           Indemnity referred to below.

Copied     The Banks and the Participants referred to below and,
           where applicable, their respective successors and permitted
           assigns.


                                                               11 March 1999



Dear Sirs

EASTERN MERCHANT PROPERTIES LIMITED ("EMPL")
- --------------------------------------------
RENT FACTORING TRANSACTION (THE "RFI") DATED 28TH OCTOBER 1996
- --------------------------------------------------------------

1.   INTRODUCTION

     We refer to the  Consent  Letter  dated 17th July 1998  addressed  by us to
     Barclays Bank Plc in relation to the  Guarantee  and  Indemnity  dated 28th
     October  1996 (as amended and  restated)  relating to the RFT, in which the
     consent of the Banks (as defined in the  Guarantee and  Indemnity)  and the
     Participants  (as  defined in the Deed of  Assignment  of Rents  dated 28th
     October  1996  relating to the RFT) to certain  changes to the terms of the
     Guarantee  and  Indemnity  was  requested.  As  used in  this  letter,  the
     expression   "Guarantee  and  Indemnity"  means  the  above  Guarantee  and
     Indemnity as amended and restated to date,  including by the above  Consent
     Letter.

     By this letter,  we request certain  amendments to be made to the Guarantee
     and Indemnity.

2.   BACKGROUND

(a)  The Consent  Letter,  as  approved by the Banks and the  Participants,
     made certain amendments to the Guarantee and Indemnity,  including the
     insertion of two new financial covenants, a minimum net worth covenant
     and a  gearing  limit.  For  the  purposes  of both  covenants,  a new
     definition - "Adjusted Consolidated Tangible Net Worth" - was introduced
     and for the purposes of the gearing  limit a new  definition of "Total
     Consolidated  Net Borrowings" was also introduced.  Unfortunately,  in
     this process two errors were made:

     (i)  Paragraph (g) of the definition of Adjusted Consolidated Tangible
          Net Worth  should  have given rise to a  deduction  in respect of
          "any  indebtedness  OWED by (i) The Energy  Group PLC (now called
          Energy  Holdings  (Number  3)  Limited),  (ii) a TU  Company  (as
          defined)  or  (iii)  Texas  Utilities  Company  or  any  company,
          partnership  or  person  of  which a TU  Company  is a  diret  or
          indirect Subsidiary Undertaking [as defined] or any other direct
          or  indirect   Subsidiary   Undertaking   of  any  such  company,
          partnership  or  person,  in each case to any member of the Group
          (as defined)".  A  typgraphical  error was made by using the word
          "owned" instead of the word "owed" highlighted above.

     (ii)  For the  purposes of the gearing  limit,  the  expression  "Total
           Consolidated  Net  Borrowings"  was  introduced,  defined  as the
           aggregate principal amount of all Borrowings (as already defined)




          of the Group less Cash (as  defined).  This new  definition  thus
          worked in part off an existing definition  (Borrowings) but erred
          in doing so without qualification.

          This is because  Borrowings as already defined  included,  as a deemed
          Borrowing under  paragraph (g) of the definition,  all premium payable
          by EMPL to  National  Power Plc under the  National  Power  headlease.
          Whilst this was appropriate  where the expression  Borrowings was used
          in the cross default clause (Clause  17.1(f)),  it was not appropriate
          in the context of the new gearing  covenant,  given in particular  the
          nature of the National  Power  headlease as an  operating  lease.  The
          inclusion   of  lease   premium  as  a  deemed   Borrowing   was  also
          inappropriate  where that term was used in the context of the original
          borrowing  restrictions  (Clauses 4.1(t) and 5(d), which have now been
          deleted  by  the  above   Consent   Letter)  and  the   definition  of
          Consolidated  Interest,  used in the interest cover covenant in Clause
          4.1(q),  particularly as that covenant already made specific provision
          for a portion  of the rents  payable by  Eastern  Merchant  Generation
          Limited to EMPL under the Lease to be treated as interest.

(b)  In the past 12 months, Eastern has taken a number of significant steps
     towards its  objective of creating an integrated  pan-European  energy
     porfolio.

     .   Purchase of 5% shareholding in Hidroelectrica  del Cantabrico
         (fourth largest electricity company in Spain), and establishing
         of a joint venture energy trading and risk management company
         with them to operate in the deregulating Iberian market.

     .   Purchase  of the rights to output  from two hydro power stations
         in Norway over a 55 year period, and formation of joint venture
         energy retail and trading  company to operate in the Nord Pool
         area  (Norway, Sweden and Finland).  Eastern's JV partner is
         Lunds Energi, one of the top ten energy retailers in Sweden.

     .   Formation of Compass  Energy,  a joint venture with Energie Noord
         West of Holland to retail gas in the deregulating Dutch market.

     .   Establishment of development offices in Madrid, Frankfurt,
         Stockholm, Prague and Warsaw, to be followed by Paris and Milan.

     The  purchases  in Spain and Norway have added some  L180  million of
     additional  borrowing to the balance sheet of Eastern  Group,  although the
     process to replace a  significant  portion of this amount with non recourse
     borrowing is well  advanced.  At the same time,  Eastern's  Net Assets have
     been  depleted  by  the  upstreaming  of  dividends  to  service  the  debt
     introduced by the acquisition of Eastern by Texas Utilities Company.

     The  combination  of  additional  borrowing  and reduced cash  reserves has
     pushed  Eastern  close to the  existing  150% gearing  ceiling,  which will
     constrain Eastern's ability to make further  significant  investments until
     non recourse refinancing creates further headroom.

     Additional   headroom  for   expansion  is  included  in  the  revised  and
     restructured facility for Eastern's UK parent TXU Eastern Holdings Limited,
     that is currently  in  syndication.  The proposed  amendment is intended to
     create a similar effect under this Facility.

     An increase in the maximum  permitted  gearing limit to 200%,  would enable
     Eastern to provide the initial  finance  for new  investments,  either from
     cash or short term  borrowings,  and  create  time for the  arrangement  of
     longer term non recourse refinancing.

     To address the concern of lenders towards fruther  depletion of Net Assets,
     Eastern   offers  to  increase  the  minimum  Net  Worth   requirement   to
     L1,000,000,000.

3.   AMENDMENTS REQUESTED

     We request your consent to the  amendment of the terms of the Guarantee and
     Indemnity by:

                                    Page 2




(a)  the  substitution  of  "owed"  for  "owned"  to  paragraph  (g) of the
     definition of "Adjusted Consolidated Tangible Net Worth";

(b)  and by  the  inclusion,  at  the  beginning  of  paragraph  (g) of the
     definition  of  "Borrowings",  of the words "(for the purposes only of
     Clause 17.1(f))"; and

(c)  the deletion of existing Clause 4.1(t) to be replaced with:

     "procure that:

      (i)  the adjusted Consolidated Tangible Net Worth is not, at any time,
           less than L1,000,000,000; and

     (ii)  Total  Consolidated  net  Borrowings do not, at any time,  exceed
           200% of Adjusted Consolidated Tangible Net Worth".

4.   EFFECTIVE DATE

     The amendments set out above will take effect on and from the date on which
     the Agent  confirms to each Bank and to The Royal Bank of Scotland  plc, as
     Participation  Agent for the Participants and to EMPL that all of the Banks
     and an  Instructing  Group have agreed to the  matters  referred to in this
     letter  (the  "Effective  Date")  and that all costs and  expenses  and the
     relevant fee for considering the amendments have been paid to the Agent and
     the Participant Agent (for the Banks and the Participants, as appropriate).

5.   SUPPLEMENTAL EFFECT

     This letter is supplemental to the Guarantee and Indemnity and, on and from
     the Effective Date, the terms of this letter and the terms of the Guarantee
     and  Indemnity  shall be read and  construed  as one  document.  Except  as
     expressly  amended  by this  letter,  the  Guarantee  and  Indemnity  shall
     continue in full force and effect.

6.   INCORPORATION OF PROVISIONS

     The  provisions  of Clauses 29, 35, 37 and 41 of the Guarantee of Indemnity
     shall apply to this  letter as if set out in full in this  letter  (mutatis
     mutandis)  but as if  references  in those  provisions  to any  Transaction
     Document were  references to this letter.  Capitalised  terms not otherwise
     defined  in this  letter  shall,  where the  context so  permits,  have the
     meanings given to them in the Guarantee and Indemnity.

7.   DELIVERY TO CUSTODIAN

     EMPL  undertakes  to deliver the  executed  original of this letter and its
     counterparts to the Custodian for retention in accordance with the terms of
     the Custody Deed.

8.   COUNTERPARTS

     This letter may be executed  in any number of  counterparts  and this shall
     have the same effect as if all of the  signatures  were on a single copy of
     this letter.

9.   LAW

     This letter is governed by English law.


                                  Page 3




     If you agree to the above,  please sign this letter and return a copy of it
     to us.

Yours faithfully


   /s/ E.J. Lean
 ........................................
Eastern Group plc



   /s/ E.J. Lean
 ........................................
Eastern Merchant Properties Limited



   /s/ E.J. Lean
 ........................................
Eastern Generation Limited



   /s/ E.J. Lean
 ........................................
Eastern Electricity plc





We agree to the  amendment  requested  in this letter and confirm  that,
having received the requisite  approvals from an Instructing Group and all
of the Banks in accordance with Clause 31.1. of the Guarantee and Indemnity,
we are authorised to sign this letter as Agent on behalf of the Banks.




   /s/ L.J. Kenworthy
 ........................................   Duly Authorized
Barclays Bank PLC as Agent

Date:  30 March 1999


                                    Page 4