It happened again Saturday. I was in a room of about thirty people eager to hear about the Sierra Club’s Cool Cities program. These thirty people appeared to be well educated. We were all certainly well feed because the meeting was at an Irish Pub. I thought about speaking up. Maybe it was the pint of Guinness. Maybe it was the weekend. At any rate, I bit my tongue and sat on my hands to avoid climbing on my soap box and alienating the few remaining friends I have.
Well meaning speakers got on the subject of net metering, wind power and hydro-electric energy generation. They were making the kind of statements that make uneducated crowds cheer and utility executives barf.
Here are some of the comments. “We have wind resources that should be used to replace dirty coal fired power plants”. “Solar energy systems are available that can be built into your house and power your home without the need for dirty coal fired power plants”.
Man, if it were only that simple.
Yes, there are wind resources throughout the United States that could be developed to provide power into the grid. Yes, there are integrated solar photo-voltaic systems that can be built into your house to provide clean energy. Yes, there are low head and small hydro-electric opportunities across the USA that contribute power to the nationwide electric grid. These things exist today and people are actually doing them, but there is more to the story. I believe that blindly repeating these cheer leader statements creates a climate of distrust between utilities and consumers that destroys the working relationships needed to really solve our electric energy problems.
The future of all of these technologies is exiting and optimistic. Yet, there are some very valid reasons that utilities might balk at massive expenditures to bring these technologies into the system today.
Wind Power- Wind power has seen exponential growth in construction and development, but it is still a small portion of the generating resource that keeps all of our lights on. In many areas the wind blows hard enough to get your attention but not hard enough to make a financially viable resource. The obvious limitation is that we expect electricity all the time, but the wind doesn’t blow all the time even in the Dakotas. Yes, some day there may be enough wind generation equipment well connected and spread out over a big enough area that system managers can “schedule” reliable power to load centers (like your neighborhood). Today however, utilities know that you will not wait to have electricity until the wind is blowing. This means that while wind can make a growing contribution to the grid, utilities feel that they must have base load reliable power generation that they can schedule to meet your power needs. So now, they are building and paying for wind facilities and coal fired facilities at the same time. This is part of the reason that generation utilities grimace in a crowd that’s screaming for more wind power. The other limitation to wind power is that people don’t usually like to live in a good wind resource area. While Chicago may be an exception, wind resources aren’t located near major population centers. So now we are talking major transmission facility construction and the people that are usually pro- wind, seem to be Not in My Back Yard (NIMBYS) when it comes to building transmission systems. Studying your wind resource for a full 12 months is the only way to find out what the wind power potential is for your site. You can get a rough idea about wind resources national wide from the National Renewable Energy Laboratory (NREL).
Solar Power-New developments in thin film construction for solar panels promise to make collectors that will turn 50 percent of the light that hits them into power instead of the 10 to 25 percent efficiency of panels in service today. Today you can buy solar roofing materials that do double duty. These new products have been commercially available for years and protect your roof like shingles while making electricity at the same time. Thousands of homes across the nation are using solar panels called photo-voltaic systems to power their homes. So why not just go solar now? -Two reasons. First they aren’t going to power my home unless I make major (read expensive) changes to my home’s building envelope (walls, attic insulation, windows) and appliances (refrigerator, well pump, stock tank heater, etc). Second, no one wants to be in the dark when the sun goes down, so making central station solar generation, puts us in the dark just when we get home and want the power. The exception to that is business and air conditioning loads. Here again we run into a “disconnect” between wishful thinking and reality. A simple Photo voltaic system with controls and equipment will set you back $10,000 to $20,000 for a modest system capable of generating 1.5 KW (kilo-Watts) and every five to seven years you get to replace batteries at about $4- 5 K a wack. When I go through my house and add up the load demands my appliances and equipment require, I’m in trouble and I’ll bet your home and business is in the same situation. It takes a very large and very expensive system to supply the 500 kWh per month average energy demand of homes in the USA. If you are serious about going solar you have to get a copy of the Real Goods Source book. It’s a product catalogue and a how to manual rolled into one book.
Hydroelectric power- Big dams have gotten a lot of bad press lately. Never mind that customers in big dam areas have some of the lowest power bills in the nation. Big dams create a host of other environmental problems that have their own opponents. Small hydro facilities in the 500 KW range are springing up nation-wide MARK FIND OUT FACTS. These facilities have real potential to contribute to the electric grid in regions that have the resource. So why aren’t utilities knocking down the doors to license and build these facilities? Well, there are two reasons, licensing and building. Each permit to build generation equipment requires a long drawn out battle because of all of the conflicting issues. Why go through multiple battles 500 to 1000 KW at a time when you can fight one 100 or 500 Megawatt battle and build the facility closer to the load demanding the power?
Even the smallest hydroelectric system can use more water and more water fall than you think. If you think you have a small hydroelectric resource you must do the research and study of your water resource to find out the potential to make electricity. The Real goods catalogue can help, but other hydroelectric education resources are available.
So, there you have it. I know it’s confusing. I know that in one sentence I sound like a democrat and the next sounds more republican. I had one women read my stuff and get real confused about which side I was on, and that is the problem today. It seems we have to pick sides and one side is for dirty coal and the other side is for clean renewable energy. The truth is both sides want electricity 24 hours a day 7 days a week. Utilities are mandated by law to do two things. First they have to supply the amount of power you want when you want it. Second, they have to do it at the least possible expense. If that wasn’t hard enough, they have to get permits and design approval ten years before you want the power. No wonder some of those executives are cranky.
My next blog will explain why most utility executives hate net-metering.
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