字幕表 動画を再生する 英語字幕をプリント MALE SPEAKER: I'd like to welcome Phil Warburg back to Google to talk about his book called "Harness the Sun". He was here earlier to talk about "Harvest the Wind" and now we're on to "Harness the Sun". As you see he's very interested in alternative energy and how it can help save the climate and why it's the future of energy in the United States. Without further introduction, I'd like the invited Phil up to talk to us about his new book. PHILIP WARBURG: It's great to be back at Google talking about my favorite subject. I can't think of a better place to talk about technological transformation than Google. I want to start by asking how many of you have solar on your homes today? And how many of you have neighbors with solar on their homes? OK, and I want to see those hands together. So that really says something to me about solar power today. And that is that it's really become part of our lives whether we've invested in it individually or whether we're part of a broader community that has decided that solar is a worthwhile investment. And by worthwhile I mean a number of things. For some people, that is simply lowering their electric bills now and thinking about future fuel prices and stability going forward in terms of their electric bills. For some, there's satisfaction in trimming at least a bit of their carbon footprint by generating at least part, or a substantial part of, their power from renewable sources. And for others there's a satisfaction in taking charge of at least some of the power that we consume in our daily lives. And that latter concept of taking charge is one that I found particularly intriguing as I traveled the country talking to different people about their own commitment to moving solar power forward. One would expect progressive politicians like former congressman Henry Waxman to be avid solar proponents-- he wrote a wonderful blurb on the back of my book-- former Head of the Energy and Commerce Committee in the House, dedicated to environmental issues. Sea solar as part of broader panoply of necessary measures we have to take to address the overwhelming challenge of climate change. But what was more surprising to me was finding that there is strong support for solar power among at least a contingent of very right-wing libertarians. People like former congressman Barry Goldwater Jr., he was Congressman from California for a number of years, he now is the chair of something called TUSK-- Tell Utilities Solar Won't Be Killed. And what that group does is it's a representation of homeowners and business owners who want to generate solar on their properties and who want fair compensation for the surplus power that they generate and they are fighting major utilities, such as Arizona Public Service, which wants to cut back on the net metering benefits that are provided to solar homeowners and solar business owners. I don't know if this is enough to bridge the gaping political chasm that exists in America today, but at least it's a sign that there is a common language that we can talk across the political spectrum in looking at some of our renewable energy opportunities. Back in 2012 when I was just wrapping up my book on wind power, people often asked me, so will your next book the about solar? And my kind of flip and dismissive comment at the time was that if I ever wrote a book about solar, I have to call it "Dim Sun". And the reason I said that was because at the time, it just struck me that solar was pricing itself out of the market and was not on the verge of becoming a mainstream power producer. Thankfully, and fairly quickly, I was proven wrong. Between the first quarter of 2012 and the first quarter of 2015 the price of residential and utility-scale solar came down about 46%. And the price of non-residential, as in commercial and public building related solar, came down about 52%. So a very dramatic drop in a very short period of time. And another powerful indicator of just where solar is today can be found in the first half of this year's new generation capacity installations. Solar, during the first half of this year, accounted for 39% of all new power generation capacity nationwide. Wind accounted for about 36%. So if you add the two of those, you're looking at 75% of our new electric generating capacity in the first half of this year coming from renewable sources. You know we all hear about natural gas as the cheaper, more convenient, accessible options-- and with fracking ever more accessible. Gas accounted for about 21.4% percent of new generated capacity during that same period. So those are all pretty powerful signs to me that solar's time really has arrived. My own solar journey began in March of 2013 when my wife and I decided to put solar on our own home's roof. And we actually found ourselves just a few days after one of Massachusetts' many heavy snow storms, not the likes of which we saw last year, but 2013 had it's share as well-- and we weren't at all sure that the installers from Sunlight Solar Energy were going to show up at all, but they did. And one member of their crew was a guy named Liam [? Madden. ?] He was a former Marine Expeditionary Unit member in Iraq-- tough guy-- but when he got out of the gleaming white Sunlight Solar Energy van and looked up at our roof, he kind of blanched. And I said, what's-- is something the matter? Have you not installed solar on a roof this steep before? And he said well, actually not. Our room has a 55 degree slope. And he and his teammates climbed the roof and in utter silence roped to the peak of the roof, they installed our solar array. Thankfully, no one was hurt and thereafter we've gotten about 75% of our total electricity needs from the sun and that includes the nightly charging of a plug-in electric hybrid vehicle. So we feel good about what we're doing and we're by no means alone in doing this. There are about 750,000 homeowners and businesses in America today who have installed solar on their rooftops. During 2014, that amounted to about one new solar installation every 2.4 or 2.5 minutes. So we're really again, seeing solar penetrate the marketplace. And one thing I should just mention, which many of you, given your work in this particular industry I'm sure know from electronic appliances, solar photovoltaics actually work better in colder weather. So some people say well gee, solar isn't a great match for Massachusetts, it's a cold climate, snowy climate, et cetera. As long as our solar panels are clear, we actually get better productivity from the sun during the winter months than during the summer months. Not overall, but at any given moment, because of the factor of colder operating conditions. But we're not just seeing solar on our homes this I'm sure is a familiar sight to you, the Mountain View headquarters of Google, where you have 30% of your peak electric demand coming from solar energy, which is pretty impressive given what must go on at that complex. And that might be expectable because again, you're a high tech company, cutting edge, et cetera. But what's interesting to me is seeing how companies like Kohl's, like Ikea, like Walmart, are going solar. Walmart now has solar on 250 of its buildings and its goal is to have solar on 1,000 of its buildings in the coming years. They want to be 100% reliant upon renewable energy at some point in the near future. Walmart isn't exactly on the cutting edge of environmentalism or energy enlightenment, but in fact, it is working toward the right ends in this particular respect. We're also seeing solar in some perhaps somewhat unpredictable places the NFL has made a commitment to solar there six NFL stadiums that either have solar today or are having it installed on their facilities.