Revenue has shown a year-over-year increase from $21.73 billion in 2023 to $24.26 billion in 2025, with noticeable quarterly fluctuations. Operating income margins have slightly strengthened, reflecting improving operating efficiency despite increasing costs in cost of revenue and other operating expenses.

Revenue growth is driven primarily by regulated rate base expansions and increasing energy demand across the company's service areas. However, energy market volatility and cost pressures on fuel expenses have impacted gross profits, resulting in variable gross margin ratios quarter-to-quarter.

Gross profit margins have ranged broadly, with a recent quarter showing decline due to higher costs, although the annual gross margin remains around the 28%-41% range. Operating margins consistently hover around 16%-22%, supported by disciplined cost management. Net income margins are more volatile, affected by interest expense and other non-operating costs.

Earnings reflect underlying stability of regulated operations but are influenced by other expenses such as depreciation and interest costs, which compress net income margins. The reported EPS is consistent with net income trends, suggesting earnings quality is steady though sensitive to external expense variability.

Year-over-year revenue growth from 2023 to 2025 averaged around 5-7%, reflecting steady expansion in utility operations and rate base adjustments. 2026 quarter-to-quarter comparisons show mixed growth with a decline from Q1 to Q2 2026 (approximate 17.5% revenue QoQ decrease).

Net income and EPS show accelerated growth in early 2026 quarters, with EPS rising from approximately $0.39 in Q2 2025 to $0.91 in Q1 2026, before moderating to $0.43 in Q2 2026. This pattern illustrates volatility likely due to seasonality and expense fluctuations.

Regulated utility rate base increases, clean energy investments, and infrastructure modernization support revenue and earnings growth. Energy price recovery and improved operational efficiencies also contribute to profitability improvements.

Growth is primarily organic, rooted in regulated operations with incremental rate hikes and customer base expansion. The lack of R&D expense underlines the capital-intensive, regulatory-driven growth rather than innovation-led expansion, favoring sustainability but limiting rapid scaling potential.

Operating margins improved modestly from about 18.5% in 2023 to above 21% in recent quarters of 2025, although Q2 2026 shows a drop to approximately 16.4%. Gross margins have fluctuated between 28% and over 40%, indicating sensitivity to cost volatility.

Return on equity and assets are not provided but improved net income and EPS growth imply stable to improving returns aligned with operating income expansion. Operating income ratio improvements suggest better asset utilization across the periods.

Margins face pressure from fluctuating fuel costs and rising interest expenses. However, regulatory frameworks provide some protection enabling rate adjustment mechanisms to preserve margins over time, suggesting medium-term sustainability.