12.	PROPERTY, PLANT AND EQUIPMENT

	2018

	C o s t											D e p r e c i a t i o n

Account	Beginning of the year		Additions		Retirements		Transfers			End of the year		Accumulated at the beginning of the year		Retirements		For the year		Rate %		Accumulated at at the end of the year		Net book value

Pipelines		39,112,667		-		18,101		831,882			39,926,448		18,606,656		300		959,389		2.2		19,565,745		20,360,703

Compressor plants		14,541,520		-		308,660		1,023,210			15,256,070		9,981,767		278,943		629,861		3,3 a 25		10,332,685		4,923,385

Other plants		17,219		-		-		-			17,219		4,642		-		584		3.3		5,226		11,993

Stations of regulation and/or measurement of pressure		1,360,656		1,081		5,948		4,001			1,359,790		1,053,505		5,163		36,195		4.0		1,084,537		275,253

Other technical installations		264,962		-		1,330		5,308			268,940		225,092		1,330		5,742		6.7		229,504		39,436

Subtotal assets related to natural gas transportation service		55,297,024		1,081		334,039		1,864,401			56,828,467		29,871,662		285,736		1,631,771				31,217,697		25,610,770

Assets related to natural gas upstream service		3,489,476		5,971		197,269		(32,913	)		3,265,265		1,330,045		177,846		207,557		3,3 a 25		1,359,756		1,905,509

Assets related to liquids production and commercialization service		7,030,019		-		474,602		434,953			6,990,370		5,958,293		440,455		97,677		3.3		5,615,515		1,374,855

Lands		71,837		35,511		-		-			107,348		-		-		-		-		-		107,348

Buildings and constructions		1,985,027		-		48,091		90,998			2,027,934		1,147,560		38,159		35,802		2.0		1,145,203		882,731

Fittings and features in building		165,920		-		11,752		17,252			171,420		67,417		6,123		7,209		4.0		68,503		102,917

Machinery, equipment and tools		513,762		129,963		47,758		10,981			606,948		396,215		47,588		27,234		6,7 a 10		375,861		231,087

UT Machinery, equipment and tools		-		591		-		-			591		-		-		446		6,7 a 10		446		145

Computers and Telecommunication systems		3,745,839		168		1,355,581		325,263			2,715,689		3,382,394		1,350,936		192,240		6,7 a 20		2,223,698		491,991

Vehicles		263,745		38,089		5,817		-			296,017		191,683		5,503		22,310		20		208,490		87,527

Furniture		148,460		-		-		104			148,564		143,026		-		837		10		143,863		4,701

Materials		1,572,902		572,326		35,953		(572,902	)		1,536,373		-		-		-		-		-		1,536,373

Line pack		153,720		-		-		222,473			376,193		17,971		-		-		-		17,971		358,222

Works in progress		2,229,243		6,122,710		-		(2,360,610	)		5,991,343		-		-		-		-		-		5,991,343

Total		76,666,974		6,906,410		2,510,862		-			81,062,522		42,506,266		2,352,346		2,223,083				42,377,003		38,685,519

	2017

	C o s t											D e p r e c i a t i o n

Account	Beginning of the year		Additions		Retirements		Transfers			End of the year		Accumulated at the beginning of the year		Retirements		For the year		Rate %		Accumulated at at the end of the year		Net book value

Pipelines		38,613,449		-		17,399		516,617			39,112,667		17,678,180		63		928,539		2.2		18,606,656		20,506,011

Compressor plants		14,181,525		2,660		189,100		546,435			14,541,520		9,508,571		102,860		576,056		3,3 a 25		9,981,767		4,559,753

Other plants		17,219		-		-		-			17,219		4,058		-		584		3.3		4,642		12,577

Stations of regulation and/or measurement of pressure		1,350,336		-		-		10,320			1,360,656		1,002,347		-		51,158		4.0		1,053,505		307,151

Other technical installations		259,919		-		11,194		16,237			264,962		219,216		187		6,063		6.7		225,092		39,870

Subtotal assets related to natural gas transportation service		54,422,448		2,660		217,693		1,089,609			55,297,024		28,412,372		103,110		1,562,400				29,871,662		25,425,362

Assets related to natural gas upstream service		3,231,072		-		2,815		261,219			3,489,476		1,123,382		100		206,763		3,3 a 25		1,330,045		2,159,431

Assets related to liquids production and commercialization service		6,839,452		-		3,922		194,489			7,030,019		5,878,107		36		80,222		3.3		5,958,293		1,071,726

Lands		71,830		7		-		-			71,837		-		-		-		-		-		71,837

Buildings and constructions		1,945,894		-		1,027		40,160			1,985,027		1,112,381		5		35,184		2.0		1,147,560		837,467

Fittings and features in building		165,425		-		-		495			165,920		60,396		-		7,021		4.0		67,417		98,503

Machinery, equipment and tools		430,019		82,172		-		1,571			513,762		382,173		-		14,042		6,7 a 10		396,215		117,547

UT Machinery, equipment and tools		-		-		-		-			-		-		-		-		6,7 a 10		-		-

Computers and Telecommunication systems		3,672,719		-		-		73,120			3,745,839		3,286,123		-		96,271		6,7 a 20		3,382,394		363,445

Vehicles		235,191		49,029		20,475		-			263,745		194,679		20,475		17,479		20		191,683		72,062

Furniture		148,206		-		-		254			148,460		142,192		-		834		10		143,026		5,434

Materials		1,118,657		514,263		9,213		(50,805	)		1,572,902		-		-		-		-		-		1,572,902

Line pack		153,720		-		-		-			153,720		17,971		-		-		-		17,971		135,749

Works in progress		2,190,845		1,648,510		-		(1,610,112	)		2,229,243		-		-		-		-		-		2,229,243

Total		74,625,478		2,296,641		255,145		-			76,666,974		40,609,776		123,726		2,020,216				42,506,266		34,160,708

As of December 31, 2018 and 2017, the assets allocated to the natural gas treatment and compression service include the following amounts in which the Company is a financial lease under the terms of leasing contracts:

	2018			2017
Cost – Capitalized financial leasing		1,429,713			1,429,713
Accumulated depreciation		(222,649	)		(130,518	)
Total		1,207,064			1,299,195

The financial leasing agreement expires in September 2026, the date on which the purchase options provided for in the contracts may be exercised.