DESCRIPTION OF COMPANY	6 Months Ended
DESCRIPTION OF COMPANY	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF COMPANY	DESCRIPTION OF COMPANY Nature of Business Piedmont Lithium Inc. (“Piedmont Lithium,” “we,” “our,” “us,” or “Company”) is a development stage company centered on building a multi-asset, integrated lithium business which will provide lithium hydroxide, a critical material, to the electric vehicle and battery manufacturing supply chains in the United States (“U.S.”), support the creation of a clean energy economy in North America and help secure America’s energy independence. Our projects are strategically located in Canada, Ghana, and the southeastern U.S. Our wholly owned, Carolina Lithium Project is located on the renowned Carolina Tin-Spodumene Belt in North Carolina. Our investments in Canada and Ghana add geographic diversity and provide the opportunity for near-term production and revenue. We plan to develop and integrate our resources and operations with the aim of bringing production online consecutively in 2023 (Quebec, Canada), 2024 (Ghana), 2025 (LHP-2) and 2026 (Carolina Lithium). The location of our domestic and international lithium assets, combined with our two planned U.S. lithium hydroxide plants, uniquely positions Piedmont Lithium to be a large, low-cost, sustainable producer of lithium products. Change in Fiscal Year-End Effective January 1, 2022, we changed our fiscal year end from June 30 to December 31. The six-month period from July 1, 2021 to December 31, 2021 served as a transition period. Our fiscal year for 2022 commenced on January 1, 2022 and will end on December 31, 2022. See our Transition Report on Form 10-KT (“Transition Report”) filed with the Securities and Exchange Commission (the “SEC”) on February 28, 2022. Basis of Presentation The accompanying unaudited consolidated financial statements and related notes have been prepared on the accrual basis of accounting in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) and in conformity with the rules and regulations of the SEC applicable to interim financial information. The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Unless otherwise indicated, all references to “$” are to U.S. dollars, and all references to “AUD” are to Australian dollars. Our reporting currency is U.S. dollars. Certain information and note disclosures normally included in the consolidated financial statements prepared in accordance with U.S. GAAP have been omitted pursuant to such rules and regulations. Therefore, these unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-KT for the six-month transition period ended December 31, 2021. These unaudited consolidated financial statements reflect all adjustments and reclassifications that, in the opinion of management, are considered necessary for a fair statement of the results of operations, financial position and cash flows for the periods presented. The current period’s results of operations will not necessarily be indicative of results that ultimately may be achieved for the year ending December 31, 2022, for any other interim period or for any other future fiscal year. Certain prior period amounts have been reclassified to conform with the current period presentation. Piedmont Lithium acquired all of the issued and outstanding ordinary shares of Piedmont Lithium Limited (“Piedmont Australia”), our Australian predecessor and currently a wholly-owned subsidiary, pursuant to a Scheme of Arrangement under Australian law, which was approved by Piedmont Australia’s shareholders on February 26, 2021 and by the Supreme Court of Western Australia on May 5, 2021 (collectively referred to as “Redomiciliation”). As part of the Redomiciliation, we changed our place of domicile from Australia to the state of Delaware in the United States, effective May 17, 2021. Piedmont Australia’s ordinary shares were listed on the Australian Securities Exchange (“ASX”), and Piedmont Australia’s American Depositary Shares (“ADSs”), each representing 100 of Piedmont Australia’s ordinary shares, were traded on the Nasdaq Capital Market (“Nasdaq”). Following the approval of the Redomiciliation, we moved the primary listing of our shares of common stock from the ASX to Nasdaq and retained an ASX listing via Chess Depositary Interests (“CDIs”), each representing 1/100th of a share of common stock of Piedmont Lithium Inc. All issued and outstanding shares of our common stock and per share amounts have been retroactively adjusted in these consolidated financial statements to reflect the 100:1 ratio and share consolidation. Shares of our common stock issued in connection with the Redomiciliation trade on Nasdaq under the symbol “PLL.” Risk and Uncertainties We are subject to a number of risks similar to those of other companies of similar size in our industry, including but not limited to, the success of our exploration and development activities, construction and permitting delays, the need for additional capital or financing to fund operating losses, competition from substitute products and services from larger companies, protection of proprietary technology, litigation, and dependence on key individuals. We have accumulated deficits of $111.4 million, and $92.7 million as of June 30, 2022 and December 31, 2021, respectively. We have incurred net losses and utilized cash in operations since inception, and we expect to incur future additional losses. We have cash available on hand and believe this cash will be sufficient to fund our operations and meet our obligations as they come due for at least one year from the date these consolidated financial statements are issued. In the event our cash requirements change during the next twelve months, management has the ability and commitment to make corresponding changes to our operating expenses, as necessary. Until commercial production is achieved from our planned operations, we will continue to incur operating and investing net cash outflows associated with, among other things, funding capital projects, development-stage technical studies, permitting activities associated with our projects, funding our commitments in Quebec and Ghana, maintaining and acquiring exploration properties and undertaking ongoing exploration activities. Our long-term success is dependent upon our ability to successfully raise additional capital or financing or enter into strategic partnership opportunities. Our long-term success is also dependent upon our ability to obtain certain permits and approvals, develop our planned portfolio of projects, earn revenues, and achieve profitability. Our consolidated financial statements have been prepared on a going-concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions, and allocations that affect amounts reported in the consolidated financial statements and related notes. Significant items that are subject to such estimates and assumptions include, but are not limited to, long-lived assets, fair value of stock-based compensation awards, income tax uncertainties, valuation of deferred tax assets, contingent assets and liabilities, legal claims, asset impairments and environmental remediation. Actual results could differ due to the uncertainty inherent in the nature of these estimates. We base our estimates and assumptions on current facts, historical experience and various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the accrual of costs and expenses that are not readily apparent from other sources. Actual results may differ materially and adversely from our estimates. To the extent there are material differences between the estimates and the actual results, future results of operations will be affected. Significant Accounting Policies Exploration and Mine Development Costs We incur costs in resource exploration, evaluation and development during the different phases of our resource development projects. Exploration costs incurred before the declaration of proven and probable reserves, which primarily include exploration, drilling, engineering, metallurgical test-work, and compensation for employees associated with exploration activities, are expensed as incurred. We have also expensed as incurred engineering costs attributable to the evaluation of land for our future lithium hydroxide conversion plants and spodumene concentrator, development project management costs, feasibility studies and other project expenses that do not qualify for capitalization. After proven and probable reserves are declared, exploration and mine development costs necessary to bring the property to commercial capacity or increase the capacity or useful life are capitalized. Mine Development Mine development assets include engineering and metallurgical test-work, drilling and other related costs to delineate an ore body, and the removal of overburden to initially expose an ore body at open pit surface mines. Costs incurred before mineral resources are classified as proven and probable reserves are expensed and recorded to “Exploration and mine development costs” in our statements of operations. Capitalization of mine development project costs that meet the definition of an asset begins once mineral resources are classified as proven and probable reserves. Drilling and related costs are capitalized for an ore body where proven and probable reserves exist and the activities are directed at obtaining additional information on the ore body or converting mineralized material to proven and probable reserves. All other drilling and related costs are expensed as incurred. The cost of removing overburden and waste materials to access the ore body at an open pit mine prior to the production phase are referred to as pre-stripping costs. Pre-stripping costs will be capitalized during the development of an open pit mine. The removal, production, and sale of de minimis salable materials may occur during the development phase of an open pit mine and are assigned incremental mining costs related to the removal of that material. Mine development assets will be depleted using the units-of-production method based on estimated recoverable metric tons in proven and probable reserves. To the extent that these costs benefit an entire ore body, they will be depleted over the estimated life of the ore body. As of June 30, 2022, we had no projects in the production phase, and we did not record depletion expense for any of our mine development assets. For a further discussion of our significant accounting policies, see “Note 2—Summary of Significant Accounting Policies” within Part II, Item 8 of our Transition Report for the six-month period ended December 31, 2021. Recently Issued and Adopted Accounting Pronouncements We have considered the applicability and impact of all recently issued accounting pronouncements and have determined that they were either not applicable or were not expected to have a material impact on our consolidated financial statements.