“Love me some sun,” says Philip Warburg.
Well, not exactly—the longtime environmental lawyer and former president of New England’s half-century old Conservation Law Foundation titles his new book Harness the Sun: America’s Quest for a Solar-Powered Future (Beacon Press, September 2015). But like the expression, the book’s import carries the most weight for the newest generations. Harness the Sun calmly shatters the power industry’s status quo.
Bloomberg New Energy Finance predicts unprecedented record-breaking this year for renewable power. It favors solar energy as the basis of this transformation. Amory B. Lovins, physicist, internationally known energy expert, and esteemed founder and head of the Rocky Mountain Institute, recently reviewed Harness the Sun in the top-rated magazine Science. He compared the rise of solar technology to the instant success of cellular phone production.
Warburg himself makes a simple, grounded comparison of fossil-fueled power plants with sustainable renewable power technologies:
“[A] power plant that relies on a carbon based fuel like coal gas or oil creates an energy deficit from the moment its fuel is extracted from the earth…. Every kilowatt-hour of power is dependent on the burning of a polluting climate-changing nonrenewable energy source.”
Harness the Sun is a compellingly quick and comprehensible read not only because of Warburg’s graceful and effort-free writing style, but also for its deeply researched footnotes, which appear at the end of the book, and weighty index. Its central tenets:
- World citizens and politicians share solar energy as a common cause despite views that span the ideological spectrum.
- Diverse groups of people across mainstream America have committed to solar.
- In essence, generating solar power is a fundamentally democratic process associated with basic independence.
Chapter One: Our House, Your House reflects the personal bridge Warburg immediately constructs between author and reader. The author begins by retelling his own experience of coming to understand solar power by trying to harness the sun in personal ways, starting with powering the house where he lives with rooftop solar panels that now meet 75% of his family’s electrical needs, and keeping their hybrid car perpetually loaded with a tankful of sunshine.
Warburg branches out from there to discuss solar photovoltaic systems on homes of varying sizes and scales, from those that improve life in previously underserved areas to systems that can help stabilize grid resources for an increasingly power-hungry middle class. And he clarifies the astonishing reach of solar energy.
In the next two chapters, “Ballfields and Boxtops” and “Local Communities Capture the Sun,” the author moves forward to individual commercial, industrial, and institutional installations—Gillette Stadium, home of the New England Patriots, for example. He also spotlights solar strides at many big-box stores (although increased efforts by these companies at the point of manufacture would yield far more impressive results). Pointing out diverse and significant local, state, and other subregional efforts, Warburg focuses on community solar. Interesting tales include that of the conservative mayor of Lancaster, California, who wants to make his locality “the solar capital of the world.”
Warburg’s energy travelogue then extends to reuse of the nation’s brownfields, damaged industrial and military areas potentially contaminated with pollution and hazardous wastes. These sites, previously thought virtually useless, offer great potential for development of renewable energy. Lovins even takes Warburg to task for underestimating the potential of parking lots.
Deserts and Native American territory also offer unexpected expansion space for land-gobbling renewable projects, especially for large solar projects. Tribal lands comprise 2% of the US, but offer 5% of our solar potential. The only hitch is that tribal land ownership disputes, like those of the Navajo and Hopi, may complicate matters.
Warburg segues here from a central focus on solar panels to a discussion of solar on the macro scale, which currently requires a lot of space. He uses southern Nevada’s Crescent Dunes Solar Energy Project, a sprawling 110MW concentrated solar power plant in the Nevada high desert near Tonopah, to focus on this other side of solar. Nowhere near as publicly recognized as PV panels, utility-scale plants like Tonopah use thousands of heliostatic mirrors to focus intensive thermal energy, converting sunlight to heat to produce steam and generate electricity. At nighttime when the sun doesn’t shine, the parabolic trough systems can keep generating power for up to 10 hours. This solar thermal capability gets past the often cited intermittency of photovoltaic and wind technologies.
Chapter Eight: Cradle to Grave follows the life cycle of photovoltaics at Solar World’s factory near Portland, Oregon. Warburg also delves into tales of First Solar and SunPower, two other important companies in today’s renewable world. Highlights of this discussion include the vital concept of conversion efficiency and limits on solar energy uses. A critical suggestion Warburg contributes to the dialogue is that manufacturers and importers of solar power should report on the life-cycle carbon footprint of their projects.
Building a Robust Solar Economy, the next chapter, comes to the heart of Warburg’s excellent argument. The graph he reproduces from the Solar Energy Industries Association, which shows the averages of home solar in 25 states and the District of Columbia, makes his point without using words.
Here Warburg ventures into the politics of solar power and the energy independence it can enable. Discussing private-sector initiatives, he points out serious financial commitments from companies like Wal-Mart, Walgreen’s, Apple, and Google, highlights comments from different manufacturing concerns, and extends his international analysis. Very important here are his direct comparisons with petroleum (especially much-touted natural gas), coal, and nuclear energies. The price drop in solar is compelling.
The title of the last chapter, Disrupting the Utility Status Quo, is probably the hardest for industrial dinosaurs and heavily petro-invested politicians to get hold of, even though the verb “disrupt” has taken on a more civilized and acceptable bent these days. Lovins describes the present-day US as “a society rife with solar myths, many deliberately manufactured.”
Though it’s hard to fault Warburg for what he doesn’t do—especially considering his thorough coverage of the many issues he does discuss—I feel that he could have elaborated more on the denial side of the story. Consider the impact of recent revelations by the press about ExxonMobil’s 40-year manipulation of the public’s trust about the environmental and atmospheric effects of fossil fuel use. As a reporter and pundit of world climate change, I’m a bit saddened by the author’s lack of attention there.
But Warburg does get into other challenges of solar adoption, such as grid, nongrid, and grid-free distribution of energy, recycling of PV modules, and impacts of solar on other species such as birds, and competition and trade wars between international solar concerns. He resists pigeonholing people into conventional party politics, recalling such efforts as Barry Goldwater’s early environmentalism.
And Lovins points out that in terms of significance, a little goes a very long way, thinking about highly disruptive occasions such as solar power production upending business models and market value of major European utility companies—before it reached even 5% of German power generation.
The epilogue to Harness the Sun discusses Warburg’s optimism about the immense potential for solar power in our future. Warburg details how every consumer can profit through leases or power purchase agreements, which currently cover almost three-quarters (72%) of rooftop solar installations. He also mentions system loans, cash, self-financing, local innovation, private-sector initiatives, and national policy reform. More on these trends for our future energy system would have been welcome.
Lovins faults the author for failing to discuss flexible loads, distributed thermal storage, and other cheap substitutes for bulk electrical storage. However, Warburg and Lovins both feel sure that the US can re-attain global status as a leader in solar production. Warburg says:
“As one of the biggest producers of the greenhouse gases that threaten our global environment, America has a duty to lead the way, rather than lag behind, in making these momentous shifts [toward solar power]. Through the personal choices we make, the policies we adopt, the technical genius we apply, and the entrepreneurial spirit we engage, we can make a difference.”
He makes it clear that the final path for solar involves widening our electricity mix, moving toward a lower-carbon economy, and actually driving future economic development with a multiplicity of jobs in solar manufacturing, sales, installation, and project development.
As solar technology has improved, the legislative atmosphere has begun to catch up to it, and the financial returns have multiplied. Warburg concludes:
“A new generation of entrepreneurs and engineers is weighing in with vision and creativity, opening up new frontiers for solar development, and politicians across the political spectrum are waking up to the opportunities that accompany a genuine commitment to renewable energy. The tools for advancing a more sustainable energy future are within reach. It is our obligation and privilege to use them.”
I don't like paywalls. You don't like paywalls. Who likes paywalls? Here at CleanTechnica, we implemented a limited paywall for a while, but it always felt wrong — and it was always tough to decide what we should put behind there. In theory, your most exclusive and best content goes behind a paywall. But then fewer people read it! We just don't like paywalls, and so we've decided to ditch ours. Unfortunately, the media business is still a tough, cut-throat business with tiny margins. It's a never-ending Olympic challenge to stay above water or even perhaps — gasp — grow. So ...
Sign up for daily news updates from CleanTechnica on email. Or follow us on Google News!
Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.