O&M

Maps available for selected companies using pull-down menus above or hyperlinks below

O&M contractor

The entity responsible for maintaining the plant when it is operation and optimising output

The Lopburi solar plant in Thailand. Sharp, which was part of the original EPC construction team, has been appointed O&M contractor

Leading Operations & Maintenance contractors

This category was added to the Wiki-Solar Database later than most of the other roles, so there is less data available, and these rankings may be less reliable than others in this section of the website (see notes below right).

This list is based on the figures available at the end of 2018..

Rank

O & M Contractors

Projects number

Capacity MWAC

1

56

4,063

2

SunEdison [US] (in insolvency)

65

1,571

3

161

1,463

4

juwi AG [DE]

88

1,236

5

Bharat Heavy Electricals  [IN]

9

1,046

6

Elecnor [ES]

30

804

7

59

609

8

EDF Energies Nouvelles [FR] (part of: EDF)

33

505

9

41

454

10

Conergy [DE] (now part of: Kawa Capital)

39

448

11

Signal Energy [US]

4

428

12

Martifer [PT] (now part of: Voltalia)

35

421

13

TBEA SunOasis [CN] (part of: TBEA)

6

419

14

25

415

15

Sterling & Wilson [IN] (part of: SP Group) BayWa r.e. [DE]

5

400

16

9

393

17

24

390

18

Saferay [DE]

22

374

19

Biosar Energy

10

336

20

5

284

21

Grupo Ortiz [ES]

7

270

22

DEPCOM Power [US]

7

259

23

Vikram Solar

5

252

24

TSK Group [ES]

5

251

25

Metka-Egn [GR] (part owned by: Egnatia Energy)

42

249

26

12

243

27

1

240

28

RES Group (Renewable Energy Systems) [GB]

3

238

29

EDF Renewable Energy [US] (part of: EDF-EN)

14

225

What is an O&M contractor?

The Operations and Maintenance contractor is appointed by the owner to oversee the technical operation of the plant.

This includes routine maintenance and cleaning, and whatever unscheduled fault finding may be required in order to optimise the output of the installation.

Because the EPC contractor has been responsible for the detailed design and construction, it is often the party best able to continue into the operational phase, and many EPC contractors go on to under-take the O&M role.

Depending on the size and complexity of the project the O&M role may require permanent onsite staff; or may be fulfilled remotely with periodic site visits.

Basis of the data used

The data used for the analysis and the table on the left is derived from operating projects of 4MWAC+ on the Wiki-Solar Database, according to these criteria.

O&M contractors are identified against 10.2% of the operating capacity on the Wiki-Solar Database (of which these top 29 account for 9.6%). The total capacity for O&M contractors listed may therefore be on average up to 10 times that identified here (though some do confirm details of their portfolio to Wiki-Solar).

Some contractors listed also fulfil other roles in utility-scale projects, and many are also EPC contractors. Any figures quoted here apply only to their O&M activities. Where companies have maps, however, these will show all their projects.

Wiki-Solar

The authority on utility-scale solar power

         @wikisolar

Company

Copyright ©  2012-19  WolfeWare Limited