Accounting Internship - Accounts Payable; Summer

About One Energy Renewables

One Energy’s mission is to make clean energy the #1 source of electricity for consumers and utilities. We develop solar energy and battery energy storage (BESS) projects across the United States in community solar, distributed generation, and large utility scale project segments. Our diverse project pipeline, multiple locations across the US, and unique multidisciplined team sets us apart.

One Energy’s mission is to make clean energy the #1 source of electricity for consumers and utilities. We develop solar energy and battery energy storage (BESS) projects across the United States in community solar, distributed generation, and large utility scale project segments. Our diverse project pipeline, multiple locations across the US, and unique multidisciplined team sets us apart.

One Energy is seeking an Accounts Payable Intern for the summer of 2027. This position will support the Accounting & Finance team in processing vendor invoices, maintaining vendor records, and assisting with employee expense programs for development, construction, and operating projects. This role provides hands-on experience in the full accounts payable lifecycle while exposing the intern to renewable energy project development, corporate operations, financial controls, and month-end accounting processes.

The intern will collaborate with cross‑functional teams to help ensure accurate, timely, and compliant financial transactions across One Energy's growing solar portfolio.

• Review and process vendor invoices.
• Validate invoice documentation, coding, approvals, and supporting records prior to entry into the accounting system.
• Assist with purchase requisition review and purchase order administration.
• Support weekly payment runs by preparing payment documentation and reviewing supporting materials.
• Respond to internal and external inquiries regarding invoices, vendors, payment status, and accounts payable processes.
• Assist with vendor onboarding, including collection and review of W-9s, banking information, and required vendor documentation.
• Support maintenance of vendor records and master data within company systems.
• Assist with employee expense and corporate card administration, including transaction reviews and policy compliance checks.
• Monitor invoicing and approval workflows and follow up with project managers, spend owners, and business stakeholders as needed.
• Help prepare account reconciliations and support month-end close activities.
• Assist with filing, auditing, and organization of accounts payable documentation and records.
• Participate in process improvement initiatives focused on efficiency, automation, and internal controls.
• Support annual reporting, audit requests, and special accounting projects as assigned.
• Gain familiarity with renewable energy project cost structures, construction payment processes, lease payments, and project accounting concepts.
• Perform other accounting and finance-related duties as assigned.

• Currently enrolled in an associate or bachelor’s degree program in Accounting or Finance.
• Interest in an Accounting or Finance career path.
• Strong attention to detail with the ability to maintain accuracy while handling large volumes of information.
• Effective organizational and time‑management skills with the ability to manage multiple priorities and deadlines.
• Strong verbal and written communication skills and the ability to work professionally with internal and external stakeholders.
• Demonstrated analytical and problem‑solving abilities.
• Proficiency in Microsoft Excel, Outlook, and other Microsoft 365 applications.
• Comfortable learning new software systems and business processes.
• Ability to handle…