The Utilities sector (XLU) held steady during a trading day that saw the S&P 500 grow 0.3%.

As a proxy for the sector, the ETF tracked closer to the overall market today than over the past month. Entering today's trading, XLU was up 4.2% over the last thirty trading days. The S&P 500, in comparison, went up 6.5%.

Clean Energy Fuels (CLNE) was a major gainer in the sector, rising 4.9% (+77 cents) to close at $16.27 with 1.9 million shares moving. The stock traded in a range of $15.19 to $16.33. Shares have been on an upward trajectory over the past month, rising $3.41 (26.5%) from a price of $12.86 on June 1, 2012.

U.S. Geothermal (HTM) was one of the sector's big losers, as its price dropped 2.5% (-1 cent) to close at 39 cents. 305,599 shares of the stock moved. The stock traded in a range of 38 cents to 42 cents. The stock has fallen over the last three months, dropping 9 cents (-18.7%) from 48 cents on April 4, 2012.

EnerNOC (ENOC) fell 2.3% to close at $7.07, crossing its 50-day moving average of $6.31. Meanwhile, South Jersey Industries (SJI) climbed 2% to close at $52, moving past its 200-day moving average of $51.17.

Markwest Energy Partners (MWE) rose 2% to close at $50.32, approaching its 50-day moving average of $50.40. It has also moved closer to its 200-day moving average of $54.95. Crosstex Energy L.P (AES) fell 2.1% to close at $16.06, moving closer to its 50-day moving average of $16.04. Also, the stock moved closer to its 200-day moving average of $12.47.

Aqua America (WTR) hit a new 52-week high today, reaching $25.63 to top the previous high of $25.17.