It is often grouped depending on its uses that are distributed for heating and cooling, lighting, operating appliances etc [1]
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj:pass	4:nsubj:pass	Discourse=context-background:33->29:2|Entity=(64-abstract-giv:act-cf1*-1-ana)
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	4:aux:pass	_
3	often	often	ADV	RB	Degree=Pos	4	advmod	4:advmod	_
4	grouped	group	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	_
5	depending	depend	VERB	VBG	VerbForm=Ger	8	case	8:case	Discourse=mode-manner:34->33:0
6	on	on	ADP	IN	_	5	fixed	5:fixed	_
7	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	8:nmod:poss	Entity=(67-event-new-cf4-2-sgl(56-abstract-giv:act-cf2-1-ana)
8	uses	use	NOUN	NNS	Number=Plur	4	obl	4:obl:depending_on|11:nsubj:pass	_
9	that	that	PRON	WDT	PronType=Rel	11	nsubj:pass	8:ref	Discourse=elaboration-attribute:35->34:0
10	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux:pass	11:aux:pass	_
11	distributed	distribute	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	acl:relcl	8:acl:relcl	_
12	for	for	SCONJ	IN	_	13	mark	13:mark	_
13	heating	heat	VERB	VBG	VerbForm=Ger	11	advcl	11:advcl:for	_
14	and	and	CCONJ	CC	_	15	cc	15:cc	_
15	cooling	cool	VERB	VBG	VerbForm=Ger	13	conj	11:advcl:for|13:conj:and	SpaceAfter=No
16	,	,	PUNCT	,	_	17	punct	17:punct	_
17	lighting	light	VERB	VBG	VerbForm=Ger	13	conj	11:advcl:for|13:conj	SpaceAfter=No
18	,	,	PUNCT	,	_	19	punct	19:punct	_
19	operating	operate	VERB	VBG	VerbForm=Ger	13	conj	11:advcl:for|13:conj	_
20	appliances	appliance	NOUN	NNS	Number=Plur	19	obj	19:obj	Entity=(68-object-new-cf3-1-sgl)
21	etc	etc.	NOUN	FW	Typo=Yes	13	conj	11:advcl:for|13:conj	CorrectForm=etc.|Entity=67)|XML=<sic ana:::"etc."></sic>
22	[	[	PUNCT	-LRB-	_	23	punct	23:punct	Discourse=explanation-evidence:36->33:1|SpaceAfter=No
23	1	1	NUM	CD	NumForm=Digit|NumType=Card	4	dep	4:dep	Entity=(69-abstract-new-cf5-1-sgl)|SpaceAfter=No
24	]	]	PUNCT	-RRB-	_	23	punct	23:punct	_
