Solar Power: Brighter Long-Term Investment Outlook

(page 3 of 3)

Capital equipment makers are also a fairly safe bet, with attractive returns on invested capital, says Osborne. Applied Materials (AMAT) and GT Solar (SOLR) both make the semiconductor equipment that deposits chemicals on large polysilicon cell surfaces. Applied Materials also makes equipment that cuts silicon wafers, while GT Solar makes polysilicon and wafers. Osborne sees them as "the arms merchants to the sector," which is attracting new customers in such countries as Korea and India.

If utility-scale installations grow as analysts expect, photovoltaic technologies will in time be outshone by concentrated solar thermal power, or CSP, which uses rotating mirrors to reflect the sun toward parabolic troughs carrying a liquid heat conductor or to so-called "power towers" with hot water boilers on top. The concentrated sunlight superheats the liquid heat conductor or the water, producing steam that drives turbines and generates electricity.

The companies that make materials for solar thermal installations such as mirrors and receiver tubes are now privately held. Turbines are made by public companies, however, and Siemens (SI) is one manufacturer whose turbine orders may increase as solar thermal power gets commercialized. BrightSource Energy, the privately held developer of Ivanpah, a 392-megawatt complex consisting of three CSP plants in California, is using Siemens turbines; the first of those plants is scheduled to begin operation in 2012.

By 2020, 6Gw of Solar Capacity

Still, photovoltaic systems are the backbone of the U.S. market, now and for the foreseeable future. In the U.S., 29 states and Washington now have mandatory Renewable Portfolio Standards, while a further six states have set voluntary goals. Most of the solar development is occurring in the 16 states that have "carve-outs," which establish a minimum percentage of electricity that retailers must provide from solar or distributed generation by a certain date, says Justin Barnes, a policy analyst for the Database of State Incentives for Renewables & Efficiency (DSIRE).

Total capacity for grid-connected PV installations was 1.26Gw at the end of 2009. Total solar capacity must reach 6Gw by 2020, and 9.5Gw by 2025, in order for the 16 states with solar carve-outs to meet their targets, according to projections by the Lawrence Berkeley National Laboratory, which is part of the U.S. Energy Dept. That's expected to be a key driver of revenue growth for manufacturers of PV panels and related materials.

Apart from companies that serve the PV panel market, there isn't yet much of a solar industry for retail investors to buy into. That will change in the next couple of years, says Nancy Pfund, a managing partner at DBL Investors, a San Francisco venture capital firm that was spun out of a JPMorgan equity fund in 2008 and which has invested in the Ivanpah complex. "There's going to be a lot more choice very soon," she says, citing the coming of gigawatt-sized solar projects by 2016.

Eventually, manufacturers of solar mirrors used in CSP plants will either go public or be acquired by public companies, she says. She foresees the same trajectory for makers of concentrated photovoltaics, which boost the efficiency of energy conversion from silicon on the panels by focusing on how the silicon is arranged alongside glass.

Solar Financing Options

Solar installation financing is another potentially big area for investment, Pfund believes. She sits on the board of SolarCity, the only full-service solar installation company in the U.S. In January, SolarCity signed a deal with Pacific Gas & Electric (PCG) under which the California utility will provide $60 million in tax equity financing for solar installations in U.S. homes and businesses in exchange for lease revenue from SolarCity customers, as well as federal investment tax credits and local rebates. SolarCity's financing options let homeowners and businesses switch to solar power with no up-front investment, so they can start saving on energy costs right away. The company's goal is to be a national brand and become publicly traded, although that's a few years away, says Pfund.

Banks such as Rabobank have also begun to establish tax equity funds. As solar energy becomes more prevalent, Pfund believes more utilities will be attracted to the financing model in order to avoid losing some of their biggest customers, who will move to solar because of how much power they consume.

Investors need to maintain a lengthy time horizon in betting on the growth of the solar industry, says Mark Burger, a principal at Kestrel Development, a consulting firm for renewable energy policy, markets, and technologies.

Solar is "the new 30-year Treasury bond," Burger says. "It's a nice, conservative investment. And you'll get a better return than owning a Treasury bond."

Bogoslaw is a reporter for Bloomberg Businessweek's Finance channel.

Business Exchange

Track and share business topics across the Web.