Duke Energy has received the first two regulatory approvals to proceed with its acquisition of Piedmont. The annual average residential electricity sales will drop 0.5% in 2016, but the prices increase will offset the impact of unfavorable weather conditions. Duke Energy is trading at very reasonable valuation and offers a very attractive dividend yield of 4.58% at current levels. Duke Energy (NYSE: DUK ) has received the first two regulatory approvals to proceed with its acquisition of Piedmont Natural Gas (NYSE: PNY ). Now the approval of Piedmont’s shareholders and permission from the N.C. Utilities Commission is required to complete the transaction. So far the process has progressed smoothly, and Piedmont’s shareholders will meet on January 22, for that purpose. Duke Energy will become the largest gas utility in the state and N.C. Utilities Commission could raise concern over the dominance position, but the management expects to complete the transaction on time. Duke Energy, like most of the other utility stocks, underperformed during 2015 primarily due to uncertainty over interest rate hike. Now finally, Fed has raised the rate and would continue to hike steadily during 2016. The only downside of interest rate increase for Duke Energy is that incremental financial burden could restrict the earnings growth. In this scenario, the investor might be concern over the sustainability of future dividend payments. However, consistently growing regulated electric & gas operations and stout cash flow position will enable Duke Energy to bear the shock and continue to return cash to shareholders. So far this year, Duke Energy has delivered satisfactory performance despite very rough weather conditions. In the coming quarters, the outlook of unregulated utilities is likely to remain challenging primarily due to declining power and natural gas prices and soft electricity demand. On the contrary, regulated utilities will benefit from the supportive regulatory environment, resulting in steady operating earnings growth in 2016. While overall sector earnings are likely to grow 3.7% during, Moody’s (NYSE: MCO ) expects that regulated utilities will witness better operating earnings growth. Source: Factset Duke Energy’s regulated utilities segment recorded operating revenue of $17.09 billion, an increase of only $16 million year-over-year. The flat top-line was due to unfavorable weather during the first half of 2015, but the segment revenue increased 2.7% during the third quarter on the back of mid-single digit increase in electricity demand. Currently, the regulated electricity business is 91.3% of total revenue flowed by 6.4% nonregulated and 2.3% regulated natural gas. Going forward, the addition of approximately $1.4 billion annual sales from Piedmont will significantly increase the revenue contribution of Duke Energy’s existing regulate natural gas business. In the advantageous scenario, the aggressive acquisition of regulated assets will fuel the company’s earnings. (click to enlarge) Source: Company Presentation The commercial and industrial demand is steadily rising, but the mild weather is negatively impacting the demand for residential electricity. The Energy Information Administration (EIA) estimates that annual average retail residential sales will drop 0.5% in 2016, but electricity sales to the commercial and industrial sector will increase by 0.7% and 1.4%, respectively. Source: EIA Duke Energy may continue to witness flat residential usage per customers owing to stable demand and improving efficiency level, but an increase of 0.7% in residential electricity prices will support the growth during 2016. Moreover, the diversified customer base and the addition of new residential customer at a low single-digit, the company added 1.3% new customer over the past twelve months, will boost the top-line at a steady pace. On the other hand, the potential ease in currency headwind and divestiture of poor performing assets could also improve the revenue from international operations. Thus, the trickling down of revenue growth, solid gross margins, and a massive $10 billion investment in gas & electric infrastructure will enable Duke Energy to accelerate an average long-term earnings growth of 4% – 6%. Duke Energy pland to invest approximately $20 billion in new generations and infrastructure development between 2015 and 2019. So far, the company has spent $4.64 billion in CAPEX during 2015, while it generated $5.4 billion in operating cash flow with cash & cash equivalent of $1.37 billion cash. The cash flow position looks pretty healthy, which depict that the company would be able to manage CAPEX and dividend payments without any cut if the interest rate increases further. Duke Energy increases dividends each year, and it has paid the quarterly dividend for 89 consecutive years. Duke Energy is one of the high yield utility stocks and currently, it offers a yield of 4.58%, significantly higher than the average 3.90% yield of large-cap electric utilities in the U.S. Duke Energy has increased the dividend at a CAGR of approximately 2% between 2009 and 2014. Now, the company has recently boosted the increase rate to 4%. The management expressed the intention to increase the future dividend more in line with the long-run earnings growth, which is 4% – 6%. Though interest rate is a threat, the healthy balance sheet will enable the company to maintain the dividend growth. Source: Finviz The balance sheet of the company is very sound with total assets of $121 billion. In contrast, the company has a total debt of $40.2 billion. The debt would increase in 2016 owing to partial debt financing to complete the acquisition and additional debt from Piedmont. Despite the substantial debt, the company’s financial health is likely to remain rigorous as it invests in quality assets to generate growing cash flows, and its total debt to asset ratio, excluding goodwill, is only 0.38 times. Currently, the total debt to equity ratio of Duke Energy is 1.07 times, which seems quite high but is significantly lower than the large-cap electric utilities average and median of 1.38 times and 1.21 times, respectively. Moreover, the interest coverage ratio of 3.85 times depicts that Duke Energy is in a very comfortable position to cover the future interest expense while raising the dividend in line with the earnings growth. Duke Energy delights the investors by raising dividends, which are backed by consistently growing earnings. Unfortunately, Duke Energy is one of the stocks to lose double-digit value during 2015 primarily due to interest rate turmoil throughout the year. On the flip side, Duke Energy is now trading at very reasonable valuation, and its yield has increased due to a steep decline in share price. Duke Energy is currently trading at forward PE of 15.31x, which is slightly less than the utility sector forward PE of 15.5x. That said, Duke Energy is a very decent utility stock to hold for growing dividends and investors should not worry about the interest rate as it is already priced-in.