Actually they do produce power as well through a wholly owned...

Actually they do produce power as well through a wholly owned subsidiary Poly Energy (GCLP). It's mostly in Gas, but also uses solar and bio-mass fuels from what I can see. They are also into purified water production.

They also own Coal Mines.

One wonders if the fuel produced would be covered under their Bio-mass fuels caveat.

The stake LINC sold or technically at this stage 'in the process of selling' is to GCL Poly Energy (GCPL).

http://www.cnbc.com/id/47056613/Linc_Energy_sells_stake_to_GCL_Poly_Energy_unit_shares_soar

Their energy production supplied some of the most affluent area's in China.

It appears GCL/GCLP is by no means a small time operator within China.

GCLP was also awarded "The Credible Enterprise of China Accreditation (“CECA”) 2011-2013. It is the only
enterprise which has been granted such honour in the energy sector.

http://www.gcl-poly.com.hk/attachment/2012030516233417_en.pdf