Sunday, August 11, 2013

Electricity is confusing...


I learned that when I was a project manager for a general contractor in Chicago. Electrical contractors used it to their advantage. If they said an expensive change order was required, they usually won, because electricity is confusing. Of course, that was Chicago, where corruption permeates every level of society. That wouldn’t happen here in Colorado, would it?

Electricity is also political.  Governor Hickenlooper recently signed Senate Bill 252, which increases the amount of renewable energy produced for Colorado. Seems like a good idea. After all, once you build a wind tower or solar panel, the electricity is free, right? Why should there even be a question? Is there something more to it?

Let’s try to unpack some of the mystery and reduce the confusion.

Renewable Portfolio Standards (RPS)

Colorado’s investor-owned utilities (Xcel Energy and Black Hills Energy) are required, by 2020, to produce 30% (the Renewable Portfolio Standard or RPS) of their electricity by renewable means. Renewable energy, as a political matter, means wind and solar. As a practical matter, it should also include nuclear and hydroelectric. But as I said, electricity is political.

To meet the RPS, Xcel Energy has been installing lots of wind towers. They have 17 wind farms and are preparing to build another one. Because of federal subsidies, improving manufacturing processes, and an abundant supply of wind towers, the next wind farm is going to be relatively inexpensive to build. The federal subsidy is a major factor in wind’s affordability, reducing the cost by almost half. But the federal government doesn’t have any of its own money. It gets it from taxpayers. Us. We Coloradans send a portion of our earnings to Washington, and the politicians send it back to Colorado as a subsidy for wind towers. Do we get a fair share of it back? Perhaps. Xcel Energy has been very aggressive at getting those subsidies. Do you, as a ratepayer benefit? Not a chance.

Legislation generally caps rate increases for renewable energy at 2%. If renewable energy were actually cheaper, there would be no rate increase for it.  Your electric bills are increasing because of the RPS. Further complicating the matter, not all of the costs for renewable energy are included in that 2% cap.

Selling your old car

Let’s say that you wanted to get a new car. When you do that, you might want to sell your old car. After all, if it’s not the one you prefer to drive, why keep it?

When the legislature demanded that Xcel build new renewable energy sources, they didn’t take into account that we didn’t need enough new electricity production to account for the new wind towers and solar panels. In other words, we’ve got a bunch of new plants and can’t get rid of the old ones. Xcel still pays for the old ones, running or not. The cost to build them is amortized over several years, and ratepayers continue to pay that cost. It’s in a part of your bill that isn’t capped at 2%. In fact, in 2011, Xcel requested a $53 million rate increase to cover the carrying costs of 300 megawatts that it couldn’t use. You’re paying for idle plants. And Xcel is about to build 550 megawatts more. Xcel will do the math for us, but I’m willing to bet that it costs more to idle 550 megawatts than 300 megawatts.

You and I, the ratepayers, end up paying to build the new wind farms, and for the old plants. It’s like having old cars that work, but that you aren’t allowed to sell or drive, but you still have to pay off the loans, taxes and insurance. Great, if you’re a car collector. I’m not a power plant collector.

Limited options and excess capacity

The Renewable Portfolio Standard (RPS) limits the other kinds of electricity production available to us. Once the RPS is fully implemented at 30%, barring a hoped-for advancement in electricity storage technology, about 2/3 of our electricity will come from natural gas. Nuclear and coal will not be an option. Here’s why:

There is no technology available to store huge amounts of electricity. Once those electrons start moving, they gotta go somewhere and get to work.

The output of coal and nuclear plants can’t be varied quickly. It takes a while to ramp up, or back off. Nuclear and coal are typically used for baseload electricity demands, the level at which demand never goes lower. Demand above that level must come from sources that can be turned on and off quickly. That’s natural gas.

Now here’s where it gets a bit tricky.

Wind and solar sources produce roughly 1/3 of their rated capacity over time, because the wind don’t always blow, and the sun don’t always shine (see US Energy Information Administration, 2013 Early Release Overview.)  So a wind farm rated at 100 megawatts only produces 33 megawatts. To produce 30% of our electricity from wind and solar, Xcel will need to have renewable capacity at 90% of anticipated demand. That means they must also build a complementary 90% capacity in natural gas. And that’s all stuff they’re gonna build, and you’re gonna pay for.

But isn’t it cheaper?

Cost comparisons between various types of electricity generation can be misleading, because they don’t take into account the money that was already paid or committed (sunk costs) for a facility that has already been built. To compare new wind power to existing coal powered plants, one should subtract the amortized capital cost of the existing power plant. According to the US Energy Information Administration, wind power costs $86.60 per megawatt hour. Traditional coal costs $100.10. But consider, for example, a coal plant that is halfway through its economic life. When you subtract half of the amortized capital cost, the cost is $67.25. (Capital costs, or the cost to build the plant, are amortized in all figures.)

It’s like buying a pair of practical shoes. You probably only need one pair, because they are just practical shoes – not your party shoes or Sunday go-to-meetin’ shoes. You can buy a new pair for $86.60, or keep using your half worn but serviceable shoes that originally cost $100.10. If you’ve got a budget, you’ll just keep using the old pair that you’ve already paid for.


Don’t forget the profit

I like profit. I think it’s a great way to encourage efficiency in free markets. But it isn’t necessarily good in a monopolized market, where the consumer is forced to pay what the producer demands. Xcel Energy commands a monopolized market, and makes 10% on everything they do. Everyone benefits - except most people. Xcel stockholders benefit, and politicians benefit because they spin this as something they are doing that’ s good for us. And because electricity is confusing, they get away with it. Keep in mind, that Xcel is not to blame – seeking profits is their obligation to their stockholders. The blame lies with the legislature.

Other ways we pay

“Anything that requires a subsidy probably doesn’t deserve it.” I’m not sure who first said that. I wish it had been me.

I already mentioned the federal wind production tax credit, without which the wind industry probably wouldn’t survive. Even with it, they’ve been having their fair share of troubles. Subsidization often spells disaster for a company.

A business succeeds and grows because it creates some kind of efficiency that makes it more valuable than its competitors or alternatives. But a company that needs a subsidy obviously lacks that efficiency in the first place. Then the subsidy reduces the urgent need to become more efficient.

Let’s also look at whence the subsidies come. As mentioned earlier, you and I pay for it. Government and businesses merely handle the transaction. Xcel Energy lists 36 categories of subsidies available through them. THIRTY SIX! These subsidies (rebates) are not complete giveaways – you have to spend more money than the rebate provides. For instance, a $120 rebate is available for installing a high efficiency furnace in your home. Such a furnace will cost several thousand dollars. Ratepayers that can’t afford that pay more on their utility bills to provide a subsidy to those who can afford it.  Even though it’s not called a tax, it functions very much like a regressive tax, a tax that creates a larger burden on those who can least afford it. And with the legislature’s support, Xcel makes 10% profit on it.

Subsidies can lead to waste

Xcel’s subsidy program is meant to encourage energy conservation.  However, that high efficiency furnace means homeowners can get more heat for the same utility bill. It does not necessarily follow that they will use less gas or electricity – they might just decide to be more comfortable in cold weather. Conservation may not happen if giveaways encourage greater consumption.

Reliability is at risk

The electrical grid has a sort of “shock absorber” built into it. As long as electrical production matches demand within a certain range, the system works. If a production facility shuts down suddenly, immediate action is required to ramp up other systems to prevent overloads that can cause blackouts. I’ve toured the “command center” where a staff monitors the output and demand, watching numbers to make sure the system stays within that narrow band. Unfortunately, renewable energy is unreliable. Winds can die quickly. Solar panels don’t work when it’s cloudy or at night time.  As more of our electricity comes from these unreliable sources, our entire system is at risk.

So to recap:

We pay for renewable production capacity we don’t need. We pay for more production capacity we don’t need to complement the renewable production capacity we don’t need. We lose the ability to use less expensive clean sources of electricity. Poor ratepayers subsidize wealthier ratepayers through Xcel’s subsidy program. We send our tax money to Washington so they can send it back to us as wind towers we don’t need. And your appliances and air conditioner don’t care where those electrons came from.  They just want them to keep coming. If the grid becomes less reliable because of its dependence on unreliable renewable sources, those electrons may not move when they are most needed.

Still confused?