31. Trade and other payables

in PLN thousand	As at 31 December 2018	As at 31 December 2017 (transformed data)
Trade payables due to related entities	32 018	58 029
Trade payables due to other entities	22 380	13 614
Tax, custom duties and social security payables	30 235	26 885
Payables due to tangible assets' acquisition	49 430	41 410
Environmental fees	3 086	1 193
Liabilities from property insurances	3 074	3 339
Grants	10 913	6 593
Liabilities from gas compensation	11 425	-
Other payables and accruals	1 549	1 357
	164 110	152 420