| Cover | Oct. 27, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 27, 2021 |
| Entity File Number | 000-31972 |
| Entity Registrant Name | TELKONET, INC. |
| Entity Central Index Key | 0001094084 |
| Entity Tax Identification Number | 87-0627421 |
| Entity Incorporation, State or Country Code | UT |
| Entity Address, Address Line One | 20800 Swenson Drive |
| Entity Address, Address Line Two | Suite 175 |
| Entity Address, City or Town | Waukesha |
| Entity Address, State or Province | WI |
| Entity Address, Postal Zip Code | 53186 |
| City Area Code | 414 |
| Local Phone Number | 302.2299 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
