Most people probably don’t think too much about where their electricity comes from. We certainly expect it to be there, and we also grumble when our rates go up. I think that there is a large disconnect between what is really going on in the energy world, and the public perception/non-perception of the challenges that we face. When we fully understand our energy predicament, energy conservation becomes a necessity.
For this thought experiment, we’re going to become an employee of a power company, but don’t worry, it’s only a temporary job. For the next few minutes you’ve just been hired on as an engineer working for a power company. After a brief job introduction and a cup of coffee, your boss comes in to give you your first assignment: “We’re expecting 50,000 new homes in our service area two years from now. We have enough excess capacity to get us through the next year, but after that, we’re going to have to find a way to provide electrical service to all these new customers. I’d like you to look at all the options.”
So, this sounds like an interesting job. Let’s start to think about some of the options that we have:
Nuclear - Very expensive to build, and would take years. Environmental permits, waste disposal, and public opposition are just some of the problems. Not a good option, probably won’t even bring it up.
Hydroelectric - All of the rivers are already dammed up. If a hydroelectric plant can be built, it already has, so this option is also a no-go.
Coal power plant - This is possible, but there will still be some public opposition. People are concerned about mercury contaminating the environment, and then there’s the CO2 emissions. Maybe the carbon dioxide can be stored underground, but this will triple the cost of producing the energy, and no one has done it yet. Suggesting an unproven technology probably isn’t the best bet, so we’ll move on to some other options, and keep dirty coal as an inexpensive, but sure to be unpopular, option.
Wind - Now here is a somewhat affordable alternative, and the public would be pretty happy with it. There might be some location issues, but let’s just assume that we can work that out. But, what will we do on days when there’s no wind? People want electricity no matter the weather. So, we’ll have to buy back-up generators (maybe natural gas) to meet the demand when there is no wind. This will increase the expense.
Solar - Still very expensive, but also has some of the same issues as wind. How do we provide power on cloudy days? How do we provide power at night? This solution requires back-up power as well. At night, when there is no solar power, the back-up generators would have to supply all of the power.
Natural gas turbine - Somewhat affordable, but supply of natural gas is an issue. Prices for natural gas are going up, and a good investment would have to be made in infrastructure to pipe in the natural gas. It produces greenhouse gases, but this might be my best choice so far. But if I need it as a back-up to wind or solar power, then it doesn’t make sense to have the wind or solar. It makes more sense just to get the natural gas turbine, and not invest additional money in wind or solar.
Well, that’s pretty much all the options available. The choices are pretty limited, and this is exactly the problem that we are facing. This exercise has been done over-and-over in real life (in much more detail), and power companies are running out of good options for producing power.
And right then, another idea hits you - “If I could have the other customers use energy more efficiently, then there would be enough energy to meet the new demand.” This is increasingly the solution that power companies are coming to. However, getting people to change their habits has become a challenge. Even getting people to change their lightbulbs to something 75% more efficient has been difficult. Power companies have tried to motivate people through rebate programs, but sadly, these are rarely taken advantage of.
It’s imperative that we reduce our energy use. It’s good for the environment, and it can be one of the best financial investments that you can make. As you can see, there aren’t any great solutions for increasing energy production. Conservation allows us to work together to meet the energy needs of our communities while minimizing the environmental impact of energy production. Okay, your work is done here. You can go home now and think about how you can make your home more energy-efficient.