BALANCE SHEETS - USD ($)	Aug. 31, 2016	Aug. 31, 2015
Current
Cash and cash equivalents	$ 31,034	$ 84,157
Owned securities	18,780	181,950
GST receivable	11,012	23,653
Prepaid expenses and deposit	83,286	15,832
Inventory	0	38,335
Total current assets	144,112	343,927
Non-Current
Long term investments in affiliated company	1	22,183
Mineral properties	83,750	0
Long term investments	1	0
Prepaid for Lithium technology	12,500	0
Total Assets	240,364	366,110
Current
Accounts payable	236,242	208,749
Deferred revenues	0	40,000
Shares subscription received	1,334	0
Due to related parties	138,923	76,288
Total Current Liabilities	376,499	325,037
STOCKHOLDERS' EQUITY
Share capital Authorized: 200,000,000 common shares with a par value of $0.001 per share Issued and outstanding: 89,528,460 common shares at August 31, 2016 and August 31,2015: 71,508,460	89,528	71,508
Additional paid-in capital	12,214,934	11,884,661
Shares to be returned	0	0
Deficit accumulated during the exploration stage	(12,440,597)	(11,915,096)
Total Stockholders' Equity	(136,135)	41,073
Total Liabilities and Stockholders' Equity	$ 240,364	$ 366,110

Deficit accumulated during the exploration stage

No definition available.

Name:	enrt_DeficitAccumulatedDuringTheExplorationStage
Namespace Prefix:	enrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).