SEPA’s Top Ten Solar Utilities Report Shows Strong Solar Growth

Yesterday, the Solar Electric Power Association (SEPA) unveiled its third-annual top ten utility solar rankings. The organization said that overall growth in solar integration by utilities defined 2009, but named many of the usual suspects to its list.

PG&E, the biggest solar integrator of 2008 again topped the 2009 list of utilities with the most solar megawatts (MW).  It installed or interconnected 85.2 MW in 2009 (in 2008, the number was 85 MW). 

The report showed that in 2008, the top ten utility solar MWs totaled 169, whereas in 2009 the number was 279 MW, a growth of 66%. These ten utilities represented 80 percent of the survey total and represent the utilities that are showing leadership in solar activity across the country.  The results of SEPA’s research suggest that this growth was sparked in part by a drop in price for photovoltaic modules and systems worldwide.

“One thing is clear from these results,” said SEPA Executive Director Julia Hamm. “Now is a great time to take another look at solar electric power. If a utility’s pricing perceptions are even 12 months old, they are out of date.”

Many of the utilities that were leaders in 2008, remain leaders in 2009 but joining the top ten this year (shown in the chart below) are Florida Power & Light Company at number 4 (29.5 MW, not ranked in 2008), Salt River Project at number 8 (5.8 MW, ranked 25th in 2008) in Arizona, and the Los Angeles Department of Water and Power at number 10 (4.889 MW, ranked 12th in 2008).

All in, however, utilities across the country are strengthening their solar portfolios, according to SEPA’s survey results. The Top Ten utilities’ share of overall solar generation in the survey actually dropped from 88 percent in 2008 to 80 percent in 2009, indicating increasing solar activity by utilities outside of the top ten.

SEPA said that one of the report’s key conclusions is that utilities’ solar portfolios are on the cusp of significant changes. Traditionally, solar electric markets have been distributed, consumer-focused, and solar industry driven but 2009 marked the beginning of change in market dynamics. The 2009 rankings were impacted in part by several centralized or aggregated distributed solar projects that were built or began construction, and several utilities that were directly involved in owning new solar projects. Installations on the utility side of the meter increased 267 percent from around 18 MW in 2008 to 65 MW in 2009 and made up 19 percent of the survey’s total, up from 9 percent the previous year.

You can download the full report here.

Previous articleBuilding the Next Generation
Next articleOff-grid solar: PV industry survivor
Jennifer Runyon has been studying and reporting about the world's transition to clean energy since 2007. As editor of the world's largest renewable energy publication, Renewable Energy World, she observed, interviewed experts about, and reported on major clean energy milestones including Germany's explosive growth of solar PV, the formation and development of the U.S. onshore wind industry, the U.K. offshore wind boom, China's solar manufacturing dominance, the rise of energy storage, the changing landscape for utilities and grid operators and much, much, more. Today, in addition to managing content on POWERGRID International, she also serves as the conference advisory committee chair for DISTRIBUTECH, a globally recognized conference for the transmission and distribution industry. You can reach her at

No posts to display