EPC

Wiki-Solar

The authority on utility-scale solar power

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Leading utility-scale construction partners

The most recently published list of top EPC contractors is shown below, citing figures in mid 2016.

Rank

EPC contractor

Projects number

Capacity MWAC

1

First Solar [US]

45

3,497

2

Juwi Solar [DE] (including JSI construction)

72

980

3

Swinerton Renewable Energy [US]

51

967

4

Belectric [DE]

90

959

5

Sterling & Wilson [IN] (part of: Shapoorji Pallonji Group)

40

835

6

Enerparc [DE]

92

825

7

SunEdison [US] (including Enfinity)

46

746

8

Q-Cells [DE] (now: Hanwha Q.Cells)

30

558

9

SunPower Corporation [US] (inc. Sunray Renewable)

26

474

10

Activ Solar [AT]

11

466

11

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

38

456

12

Eiffage [FR]

7

443

13

TBEA SunOasis [CN] (part of: TBEA)

8

440

14

IB Vogt Solar [DE]

47

409

15

Canadian Solar [CA] (including Recurrent Energy)

22

385

16

Bechtel [US]

2

376

17

Amec Foster Wheeler [GB]

10

368

18

RES Group (Renewable Energy Systems) [GB]

13

362

19

Trina Solar [CN]

2

340

20

Martifer [PT]

33

318

21

Phoenix Solar [DE]

31

292

22

BayWa r.e. [DE]

20

268

23

Solarcentury [GB]

26

254

24

Yingli Solar [CN]

7

251

25

Toshiba [JP]

6

242

26

Abengoa Solar [ES]

3

241

27

Saferay [DE] GP Joule [DE]

16

227

28

Solar Power Inc [US] (part of: LDK; including Xinyu Xinwei)

17

225

29

Mortenson Construction

6

225

30

Gestamp [ES] (now: X-Elio)

16

215

What is the EPC contractor?

This project partner is primarily responsible for the Engineering, Procurement and Construction of the plant. This usually includes selecting the suppliers of solar modules, inverters and other key items of equipment; and finalising and underwriting the final design and output projections for the plant.

While fulfilling the role of prime contractor, many EPCs will in turn appoint sub-contractors to handle much of the construction work; typically divided between mechanical and electrical activities.

The EPC contractor is usually appointed by the project developer or the owner (though a company may fulfil more than one of these roles).

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.

EPC contractors are identified against 41.9% of the operating capacity on the Wiki-Solar Database (of which these top 30 account for 22.7%). The total capacity for contractors listed may therefore be on average up to twice that identified here (though a number have confirmed details of their portfolio to Wiki-Solar).

Because capacity is included in these figures only when the plant is connected, the total capacity now fully and partly constructed by many of those listed will be higher.

Some contractors in this list also fulfil other roles in utility-scale projects. The figures quoted here apply only to their construction activities. Where companies have maps, however, these will show all their projects.

EPC contractor

The project participant primarily responsible for the construction of the solar generating station

The Torreiles solar plant in France, for which Juwi Solar was the EPC contractor