Note 6 - Note Payable (Details Textual)																												1 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Feb. 02, 2018 USD ($)	Jan. 23, 2018 USD ($) $ / shares shares	Jan. 21, 2018 shares	Dec. 22, 2017 shares	Dec. 04, 2017 USD ($) $ / shares	Nov. 22, 2017 shares	Nov. 13, 2017 shares	Oct. 24, 2017 USD ($) $ / shares	Sep. 28, 2017	Aug. 30, 2017 USD ($)	Aug. 29, 2017 USD ($) $ / shares shares	Jul. 28, 2017 USD ($) $ / shares shares	Jun. 19, 2017 USD ($)	May 31, 2017 USD ($) shares	May 16, 2017 $ / shares shares	May 01, 2017 USD ($) $ / shares shares	Apr. 27, 2017 USD ($) shares	Apr. 21, 2017 USD ($) $ / shares shares	Mar. 31, 2017 USD ($) $ / shares shares	Mar. 07, 2017 USD ($) $ / shares shares	Mar. 03, 2017 USD ($) $ / shares shares	Mar. 01, 2017 USD ($) $ / shares shares	Feb. 01, 2017 USD ($)	Jan. 27, 2017 USD ($) shares	Nov. 11, 2016 USD ($) $ / shares shares	Oct. 28, 2016 USD ($) shares	Jan. 15, 2016 USD ($) $ / shares	Nov. 30, 2017 shares	Jan. 31, 2016 USD ($) $ / shares shares	Feb. 28, 2018 USD ($) $ / shares	Feb. 28, 2018 USD ($) $ / shares	Feb. 28, 2017 USD ($)	May 31, 2017 USD ($)	Aug. 31, 2016 USD ($)	May 06, 2016 USD ($)	Mar. 31, 2016 USD ($)	Jan. 08, 2016 USD ($)
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																														$ 1.25	$ 1.25
Convertible Debt, Current														$ 871,651																$ 3,108,112	$ 3,108,112		$ 871,651
Repayments of Short-term Debt																															488,000
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction																															23,600	9,000
Debt Instrument, Convertible, Beneficial Conversion Feature																															318,764	$ 184,416
Convertible Debt, Noncurrent														6,040,706																			6,040,706
Notes Payable, Current														545,832																545,832	545,832		545,832
Class of Warrant or Right Exercised in Period | shares																												3,182,162
Warrant [Member]
Class of Warrant or Right Exercised in Period | shares															831,168
AIP Note Purchase Agreement [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares											$ 0.60
Conversion of Stock, Shares Converted | shares											150,001
Other Noncash Expense																															594,583
Six Percent Promissory Note [Member]
Debt Instrument, Face Amount																													$ 60,000						$ 10,000	$ 10,000
Debt Instrument, Interest Rate, Stated Percentage																													6.00%						6.00%	6.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares											50,000																		100,000
Interest Expense, Debt																													$ 23,990	11,995
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares											$ 1																		$ 1
Class of Warrant or Right, Term											3 years																		3 years
Convertible Debt																														20,000	20,000
Convertible Debenture [Member]
Debt Instrument, Face Amount																																					$ 130,000
Debt Instrument, Interest Rate, Stated Percentage																																					6.00%
Debt Instrument, Convertible, Number of Equity Instruments																											50,000
Convertible Debt																											$ 40,000
Six Percent Convertible Note Due December 31, 2016 [Member]
Debt Instrument, Face Amount														$ 40,000																			40,000
Debt Instrument, Convertible, Conversion Price | $ / shares																											$ 1.20
10% Promissory Note Due March 31, 2017 [Member]
Debt Instrument, Face Amount																				$ 100,000		$ 100,000												$ 150,000
Debt Instrument, Interest Rate, Stated Percentage																			6.00%	10.00%		10.00%												10.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares											25,000								100,000	100,000		100,000
Interest Expense, Debt											$ 5,998								$ 23,990
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares											$ 1				$ 0.60				$ 1	$ 0.60		$ 0.60
Class of Warrant or Right, Term											3 years								3 years	3 years		3 years
Convertible Debt																														150,000	150,000
Debt Instrument, Unamortized Discount																				$ 40,120		$ 40,120
Notes Payable, Current																														100,000	100,000
Conversion of Stock, Shares Converted | shares														169,886					169,886
Class of Warrant or Right Exercised in Period | shares															831,168
10% Promissory Note Due March 31, 2017 [Member] | Common Stock [Member]
Conversion of Stock, Shares Converted | shares																			169,886
Promissory Note Due April 21, 2017 [Member]
Debt Instrument, Face Amount																										$ 38,500
Debt Instrument, Convertible, Conversion Price | $ / shares																			$ 0.60
Debt Instrument, Unamortized Discount																										$ 3,500
Conversion Price, Percent of Lowest Trading Price																										65.00%
Stock Issued During Period, Shares, New Issues | shares																	30,000									20,000
Amortization of Debt Discount (Premium)																			$ 26,707														15,293
Conversion of Stock, Amount Issued																	$ 35,000
Promissory Note Due April 21, 2017 [Member] | Restricted Stock [Member]
Debt Instrument, Unamortized Discount																										$ 11,793
Promissory Note Due March 31, 2017 [Member]
Debt Instrument, Face Amount																								$ 38,500
Debt Instrument, Convertible, Conversion Price | $ / shares																			$ 0.60
Debt Instrument, Unamortized Discount																								$ 3,500
Conversion Price, Percent of Lowest Trading Price																								65.00%
Stock Issued During Period, Shares, New Issues | shares																	20,000							20,000
Amortization of Debt Discount (Premium)																			$ 24,101														17,898
Conversion of Stock, Amount Issued																	$ 35,000
Promissory Note Due March 31, 2017 [Member] | Restricted Stock [Member]
Debt Instrument, Unamortized Discount																								$ 14,398
Promissory Note Due October 1, 2017 [Member]
Debt Instrument, Face Amount																							$ 125,000
Interest Expense, Debt																															49,914
Debt Instrument, Unamortized Discount														$ 61,950									$ 12,000										61,950
Conversion Price, Percent of Lowest Trading Price																							60.00%
Amortization of Debt Discount (Premium)																																	59,935
Total Debt Discount																							$ 121,886
Convertible Debt, Current														63,050																			63,050
Repayments of Short-term Debt												$ 174,914
Total Convertible Debentures [Member] | Securities Purchase Agreement [Member]
Debt Instrument, Face Amount																									$ 450,000
Debt Instrument, Interest Rate, Stated Percentage																									10.00%
Debt Instrument, Unamortized Discount																									$ 50,000
Debt Instrument, Term																									3 years
Long-term Debt, Gross																									$ 500,000
Convertible Debentures, First Tranche [Member] | Securities Purchase Agreement [Member]
Debt Instrument, Face Amount																									$ 150,000
Interest Expense, Debt																															45,000
Debt Instrument, Convertible, Conversion Price | $ / shares																									$ 0.65
Debt Instrument, Unamortized Discount														109,294											$ 15,000								109,294
Conversion Price, Percent of Lowest Trading Price																									65.00%
Stock Issued During Period, Shares, New Issues | shares																									50,000
Amortization of Debt Discount (Premium)																																	24,573
Repayments of Short-term Debt													$ 195,000
Proceeds from Issuance of Debt																									$ 135,000
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction																									6,000
Debt Instrument, Convertible, Beneficial Conversion Feature																									74,530
Convertible Debt, Noncurrent														40,706																			40,706
Convertible Debentures, First Tranche [Member] | Restricted Stock [Member] | Securities Purchase Agreement [Member]
Debt Instrument, Unamortized Discount																									$ 38,337
Ten Percent Promissory Note Due November 3, 2017 [Member]
Debt Instrument, Face Amount																					$ 103,000
Debt Instrument, Interest Rate, Stated Percentage																					10.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																					50,000
Interest Expense, Debt																															41,129
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																					$ 0.60
Class of Warrant or Right, Term																					3 years
Debt Instrument, Unamortized Discount														58,794							$ 89,337												58,794
Conversion Price, Percent of Lowest Trading Price																					40.00%
Amortization of Debt Discount (Premium)																																	33,543
Repayments of Short-term Debt										$ 144,129
Debt Issuance Costs, Net																					$ 3,000
Debt Instrument, Unamortized Discount (Premium), Net														44,206																			44,206
The 10% Secured Convertible Promissory Notes [Member]
Debt Instrument, Face Amount																$ 2,500,000
Debt Instrument, Interest Rate, Stated Percentage																10.00%
The 10% Secured Convertible Promissory Notes [Member] | AIP Note Purchase Agreement [Member]
Debt Instrument, Face Amount																$ 2,500,000
Debt Instrument, Interest Rate, Stated Percentage																10.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																2,500,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																$ 1
Class of Warrant or Right, Term																5 years
Ten Percent Secured Convertible Promissory Notes 1 [Member] | AIP Note Purchase Agreement [Member]
Debt Instrument, Face Amount																														2,151,640	2,151,640
Debt Instrument, Unamortized Discount																$ 375,000														348,361	348,361
Amortization of Debt Discount (Premium)																															1,533,913		168,562
Debt Instrument, Convertible, Beneficial Conversion Feature																250,000
Convertible Debt, Noncurrent														617,727																			617,727
Debt Issuance Costs, Net																175,833
Debt Instrument, Unamortized Discount (Premium), Net														1,882,274																			1,882,274
Ten Percent Secured Convertible Promissory Notes 1 [Member] | AIP Note Purchase Agreement [Member] | Warrant [Member]
Debt Instrument, Unamortized Discount																1,250,000
Nine Percent Convertible Promissory Notes [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares			100,000	100,000		100,000	100,000
Nine Percent Convertible Promissory Notes [Member] | Private Placement [Member]
Debt Instrument, Face Amount																		$ 899,999												859,999	859,999
Debt Instrument, Interest Rate, Stated Percentage																		9.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																		1,279,998
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																		$ 0.60
Class of Warrant or Right, Term																		5 years
Debt Instrument, Convertible, Number of Equity Instruments					101,010			60,606
Debt Instrument, Convertible, Conversion Price | $ / shares					$ 0.2475			$ 0.2475
Debt Instrument, Unamortized Discount																		$ 107,999												0	0
Conversion Price, Percent of Lowest Trading Price																		60.00%
Amortization of Debt Discount (Premium)																															793,332		226,666
Proceeds from Issuance of Debt					$ 25,000			$ 15,000
Debt Instrument, Convertible, Beneficial Conversion Feature																		$ 339,656
Convertible Debt, Noncurrent														106,667																			106,667
Debt Issuance Costs, Net																		12,000
Debt Instrument, Unamortized Discount (Premium), Net														793,332																			793,332
Nine Percent Convertible Promissory Notes [Member] | Private Placement [Member] | L2 Capital LLC [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares															447,552
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares															$ 0.60
Class of Warrant or Right Exercised in Period | shares															831,168
Nine Percent Convertible Promissory Notes [Member] | Warrant [Member] | Private Placement [Member]
Debt Instrument, Unamortized Discount																		$ 560,343
Senior Secured Promissory Note [Member] | SolBright Renewable Energy, LLC [Member]
Debt Instrument, Face Amount														2,000,000		$ 2,000,000																	2,000,000
Debt Instrument, Interest Rate, Stated Percentage																15.00%
Convertible Promissory Note [Member]
Debt Instrument, Face Amount																					$ 103,000
Debt Instrument, Interest Rate, Stated Percentage																					10.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																					50,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																					$ 0.60
Class of Warrant or Right, Term																					3 years
Convertible Promissory Note [Member] | SolBright Renewable Energy, LLC [Member]
Debt Instrument, Face Amount														$ 6,000,000																			$ 6,000,000
Convertible Promissory Note [Member] | SolBright Renewable Energy, LLC [Member] | Series A Preferred Stock [Member]
Debt Instrument, Convertible, Number of Equity Instruments									4,000,000
Nine Percent Two Secured Convertible Promissory Notes [Member]
Debt Instrument, Face Amount												$ 70,000
Debt Instrument, Interest Rate, Stated Percentage												9.00%
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares												$ 0.60
Class of Warrant or Right, Term												5 years
Debt Instrument, Unamortized Discount												$ 17,000
Conversion Price, Percent of Lowest Trading Price												60.00%
Amortization of Debt Discount (Premium)																															66,136
Proceeds from Issuance of Debt																															50,000
Debt Issuance Costs, Net												$ 3,000
Class of Warrant or Right Issued in Period | shares												233,332
Convertible Note Payable Due October 18, 2018 [Member]
Debt Instrument, Face Amount		$ 237,600																												62,193	62,193
Debt Instrument, Interest Rate, Stated Percentage		8.00%
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 0.60
Class of Warrant or Right, Term		3 years
Debt Instrument, Convertible, Number of Equity Instruments		30,000
Debt Instrument, Unamortized Discount		$ 20,000
Amortization of Debt Discount (Premium)		202,626																													27,218
Proceeds from Issuance of Debt		200,000
Debt Issuance Costs, Net		$ 17,600
Debt Instrument, Unamortized Discount (Premium), Net																														175,407	175,407
Class of Warrant or Right Issued in Period | shares		300,000
Conversion of Stock, Conversion Price | $ / shares		$ 0.60
Convertible Note Payable Due October 18, 2018 [Member] | Restricted Stock [Member]
Debt Instrument, Convertible, Beneficial Conversion Feature		$ 165,026
Convertible Note Payable Due February 2, 2019 [Member]
Debt Instrument, Face Amount	$ 150,000																													34,280	34,280
Debt Instrument, Interest Rate, Stated Percentage	10.00%
Debt Instrument, Unamortized Discount	$ 3,000
Conversion Price, Percent of Lowest Trading Price	60.00%
Amortization of Debt Discount (Premium)	$ 123,142																														7,422
Proceeds from Issuance of Debt	147,000
Debt Instrument, Convertible, Beneficial Conversion Feature	$ 120,142
Debt Instrument, Unamortized Discount (Premium), Net																														$ 115,720	$ 115,720