Mia Barron-D'Souza

Mia specializes in the utilities sector, with extensive experience leading Cost Allocation and Overhead Capitalization Studies, regulatory accounting assessments, and the preparation of expert witness reports to support regulatory filings and proceedings across Canada.

Her expertise includes rate-regulated accounting, renewable energy purchase agreement accounting, IFRS and US GAAP application, and the capitalization of cloud computing and software implementation costs under various accounting and regulatory frameworks.

In addition, Mia leads complex accounting advisory and capital markets engagements for large public and multinational organizations, providing guidance on acquisitions, divestitures, carve-outs, and GAAP conversions. Whether supporting clients through complex transactions, capital markets activities, regulatory proceedings, or financial reporting challenges, Mia combines deep technical accounting expertise with a practical understanding of utility regulation to deliver solutions that are aligned with both business objectives and regulatory requirements.

Mia spent two years on secondment to the PwC US Complex Accounting and Regulatory Services team where she delivered expert reports for FERC regulated utilities. Prior to public accounting, she worked in crude oil scheduling at a large Canadian oil and gas exploration and production company.

Mia serves as Secretary of PwC's Global Rate-Regulated Corporate Reporting Working Group and Co-Chair of PwC's Global IFRS 20 Accounting Advisory Group, where she drives thought leadership and guidance on the application of IFRS 20 and ASC 980 across PwC's global network.