Segment performance

	2020	2019	2018
Revenue from non-PGNiG Group customers	2,754	3,351	3,795
Inter-segment revenue	1,858	2,471	3,876
Total revenue, including	4,612	5,822	7,671
– high-methane and nitrogen-rich gas	2,490	3,086	4,536
– crude oil, condensate and NGL	1,491	2,112	2,554
– geophysical, geological and drilling services	227	277	275

	2020	2019	2018
Total expenses	(4,933)	(3,518)	(3,714)
– depreciation and amortisation expense	(1,248)	(1,056)	(1,063)
– raw materials and consumables used	(313)	(356)	(380)
– employee benefits expense	(910)	(890)	(867)
– services	(618)	(590)	(667)
– transmission services	(210)	(223)	(261)
– cost of dry wells and seismic surveys written-off	(198)	(258)	(687)
– impairment of non-current assets	(1,485)	(354)	203
– work performed by the entity and capitalised	494	488	506
– other expenses, net	(445)	(279)	(498)

Change in the E&P segments EBITDA: 2019 vs 2020 [PLN m]

revenue from sales of crude oil and condensate down PLN -621m (-29%) y/y, on lower sales volumes in Poland (-8% y/y) and Norway (41% y/y), and a -34% y/y decrease in the average oil price in USD (USD 42/bbl).
crude oil and NGL production volumes in Norway up 40% y/yr, to 615 thousand tonnes;
revenue from sales of gas down PLN -605m (-19%) y/y, driven by a -25% decline in EUR-denominated gas prices on the PPX Day-Ahead Market (TTF);
cost of dry wells and seismic surveys written off: PLN -198m in 2020 vs PLN -258m in 2019;
recognition of impairment losses on non-current assets: PLN -1,485m in 2020 vs PLN -354m in 2019;
overlift/underlift in Norway in 2020 – effect on profit or loss for 2020: PLN 16m. In 2019, the effect of overlift/underlift on profit or loss was PLN -12m.

PGNiG UN (NOKm)	2020	2019	2018
Revenue	2,180	2,358	3,569
EBITDA	436	1,515	2,247
EBIT	(945)	721	1,343
Net profit/loss	(183)	143	157
Total assets	15,219	13,244	10,145
Equity	1,711	1,894	751

Financial performance of subsidiaries