This one is a new locomotive, Newag's type E6ACTa, also known as Dragon2. This one is owned by the locomotive leasing company Cargounit and it has been leased by the Czech national Railways CD's Polish subsidiary CD Cargo Polska. This Dragon2 has six powered axles and it is capable of pulling trains up to 3200 tons.
Picture from Gieraltowice from along the Knurow-Gieraltowice main line 23.10.2023 by Petr Štefek.

An old formerly Czech Škoda locomotive of the class 181 now owned by Cargounit.
Picture from Gieraltowice from along the Knurow-Gieraltowice main line 23.10.2023 by Petr Štefek.

Several Polish private companies - including also international companies active in several countries - have cheaply bought old locomotives from Czech Republic, Slovakia and Romania and have brought them into Poland. This is one example. This is an old Czech class 182 machine, now owned by CTL Logistics. CTL is a Polish company, formerly Chem Trans Logic. They own 165 locomotives. The Czech class 182 used to be Czechoslovakian ČSD class E 669.2, a locomotive built by Škoda Works 1963-65. Most have been scrapped, but some are still in use in Czech Republic, Slovakia and Poland. In Poland two companies use them still.
Picture from Olsztyn station 29.6.2013 by Ilkka Siissalo.

Another view of the same old Czech class 182 machine of CTL Logistics.
Picture from Olsztyn station 29.6.2013 by Ilkka Siissalo.

Another old Czech class 182 locomotive of CTL Logistics trying to hide behind poles and in the foggy weather.
Picture from Czestochowa station 28.6.2015 by Ilkka Siissalo.

Yet another old Czech class 182 locomotive of CTL Logistics, this time a bit better seen.
Picture from Bialystok station 29.6.2018 by Ilkka Siissalo.

A class 66 locomotive of the German DB Cargo (formerly DB Schenker Rail Polska) hauling a heavy coal train. Note the UIC table at the side of the locomotive: The machine is still in UK register. Photo from Rybnik 29.6.2015 by Ilkka Siissalo.

Another class 66 diesel of DB Cargo in UK register hauling a heavy coal train. Photo from Rybnik 29.6.2015 by Ilkka Siissalo.

Germany lost in WWII its precious coal mines of upper Silesia, but today it's again German DB trains that haul the coal there. Photo from Rybnik 29.6.2015 by Ilkka Siissalo.

This incredible and odd looking creature is a totally renewed old Russian M62 locomotive. It has been rebuilt beyond recognition and it is not immediately eveident from the picture either, but it actually belongs to DB Cargo. DB uses it for transporting Silesian coal to the ports by the Baltic Sea. Photo from Rybnik 29.6.2015 by Ilkka Siissalo.

Another picture of the same rebuilt M62 as above. Only the undercarriage structures and bogies are left from the original Russian locomotive. Photo from Rybnik 29.6.2015 by Ilkka Siissalo.

It just looks stunning, doesn't it ? Not beautiful, but I could only stare... WTF is that ?? =8-)
Photo from Rybnik 29.6.2015 by Ilkka Siissalo.

This is a new Siemens Vectron, class 5170 of DB Schenker Rail Polska, here rented for trial purposes to PKP Intercity.
Picture from Krakow Glowny 7.3.2015 by Ilkka Siissalo.

EP Cargo is a Czech cargo operator company which operates not only in Czechia, but also in Germany and Poland. Here we see their new Siemens Vectron decorated by quite fancy tapings.
Picture from Břeclav 18.6.2023 by Markku Salo.

A class 66 locomotive of the British company Freightliner, moved from Britain to Poland and here parked at a siding near the small village of Papierna in eastern Poland. Picture by Ilkka Siissalo 25.6.2015.

The class 66 is something very British and very odd in the Polish countryside, but there is a paper factory in Papierna, which probably is the reason why the machine was there, engines running. Picture in Papierna by Ilkka Siissalo 25.6.2015.

This huge six axle locomotive is a brand new Dragon built by the company Newag. This one is of the subtype Dragon E6ACTd which will run only on DC current plus that it has a small additional diesel engine so that it can deliver wagons to unelectrified branch lines. It's a purely cargo locomotive and we don't know why it was here with two first class Intercity coaches. Maybe some kind of a demonstration run for this new locomotive type? Freightliner is a British company with a Polish subsidiary Freightliner PL. They ordered five of these new Dragon machines and this one is the number 001 of them.
Picture from Zworzec Gdanski 13.5.2023 by Markku Salo.

Lotos is a large petroleum and chemical industry company, which has its own railway subsidiary Lotos Kolej (Lotos railroads). This picture is from the main depot of Lotos Kolej in Gdansk. The locomotive is an old PKP diesel switcher of the class SM42, but modernised by the company Newag and operated by Lotos. Picture in Gdansk 4.4.2017 by Ilkka Siissalo.

Another SM42 switcher. This one is owned by the company Wiskol, but it operates on behalf of Lotos Kolej. Picture in Gdansk 4.4.2017 by Ilkka Siissalo.

Lotos Kolej has also old SM42 switchers carrying its own colours.
Picture from Lotos' depot at Gdansk 30.6.2013 by Ilkka Siissalo.

Also this is an SM42, but thoroughly rebuilt by Newag so that only the undercarriage remains of the old locomotive.
Picture from Lotos' depot at Gdansk 30.6.2013 by Ilkka Siissalo.

Lotos bought a number of old Czech electric locomotives of the Czech class 181 as it was fairly straightforward to get them registered in Poland too. In Poland they became class 3150 and as is evident from the pictures, the machines retained their Czech registration numbers in addition to the new Polish ones. The model is a six axle heavy electric loco built by Škoda Works 1961-62. Picture in Gdansk 4.4.2017 by Ilkka Siissalo.

Three old Czech class 181 electric locomotives and one brand new Bombardier TRAXX multiengine diesel of the German Baureihe 285 at Lotos' depot in Gdansk. Picture 30.6.2013 by Ilkka Siissalo.

Lotos has about 80 km of its own tracks near the huge petroleum refinery that the group owns in Gdansk. Picture in Gdansk 4.4.2017 by Ilkka Siissalo.

Lotos Kolej's petroleum wagon depot in Gdansk. Picture 30.6.2013 by Ilkka Siissalo.

This is a modernised former PKP class EU07 locomotive, but now painted in the colours of DLA, Dolnośląskie Linie Autobusowe, which is a bus company now owning three of these locomotives. Here they operate for Lotos Kolej. The second locomotive is an old Czech built diesel, used for shunting of the petroleum wagons at non- electrified yards.
Picture from Lowicz station 28.6.2015 by Ilkka Siissalo.

A second view of the same train as above. The diesel engine is an originally Czech machine of their class T448p, now owned by the company Euronaft Trzebinia. They were built 1973-89 for Czechoslovakian state railways and they are commonplace in Czech and Slovakian train yards.
Picture from Lowicz station 28.6.2015 by Ilkka Siissalo.

This electric locomotive is an interesting one. It is called now type 207E but actually it is (or was) a Soviet built M62 diesel which in Poland is known as the type ST44. Only the underparts of the old M62 have been used and then on top of that a brand new electric locomotive has been built.
Picture from Gieraltowice from along the Knurow-Gieraltowice main line 23.10.2023 by Petr Štefek.