Archive for the ‘Electricity’ category

Say What About Natural Gas Prices?

December 14, 2012

I read a story in the media today where an electric utility is justifying a large rate increase based on the notion that  the price of natural gas for electricity generation has risen by 20% in the past 2 1/2 months.    Hmmm.  Price data for natural gas for electricity production isn’t available in NH because of the small number electricity producers means releasing it would violate disclosure regulations.  Price data for the U.S. and for Massachusetts is available though, and while it does stop at the end of September 2012, it suggests that natural gas prices for electricity generation have been substantially lower for the most of the past two years.   As of September 2012, the year-over-year change in natural gas prices for electricity production in the U.S. and in Massachusetts averaged -30% for the preceding 12 months.  It is hard to see how a 2 1/2 month increase will negate average reductions of 30% over the preceding 12 months.  But a lot of the calculations used in setting electric rates doesn’t conform to mathematical laws.

Nat gas for electrticty 12 mos MA

One would think years of natural gas price declines would have prompted greater  price reductions if  a 2 1/2 month rise warrants a large increase.  Looking at price changes over the same month of the prior year year (to avoid any seasonal distortions that can occur), you can see the prices fell by as much as 40% or more  in 2012.  Prices do vary by state but not enough to negate these trends.  Sure, prices do rise and have very recently, but not enough to offset the tremendous drop they have experienced over the past several years.

nat gas prices for electricity no moving avg

The Disconnect Between the Cost of Generating Electricity and Retail Prices

October 24, 2012

It is hard for consumers of electricity to understand why retail prices are what they are and how they are determined.  It is beyond one blog entry to fully describe the process but in overview, the suppliers  of electricity (generating companies) in a region offer to supply electricity to the market at a given price and the offers are accepted beginning with the lowest cost providers first, until enough energy is supplied to meet expected demand in the region.  The price of electricity offered by the last electricity generator needed to meet the regional demand determines the market price paid by companies that supply the electricity to businesses and consumers.  Retail prices are a function of the market price of electricity, plus many other costs such as transmission, special infrastructure charges, and profits by suppliers, among others.  Much of these costs are determined at the state level by regulators, as well as the characteristics of the retail electricity market in the state (competition) and the practices and policies of the companies that supply electricity to retail markets.

The end result is that retail prices for electricity in any state bear only a limited relationship to the cost of generating electricity in the state.  The chart bellow shows that the cost to generate 1 million BTUs of electricity in New Hampshire is about in the middle of all 50 states.  Vermont is also relatively low.  Both states have a relatively lower generating cost per million BTUs because a significant portion of the electricity produced in their state is from nuclear generators.

The correlation between the fuel costs to generate electricity in a state and retail prices per 1 million BTUs is modest, explaining less than one-third of the price per million BTU at the retail level.  The chart below show that despite fuel costs that are in the middle of the pack,  NH, VT and CT have high retail prices per million BTU of electricity.   The regional nature of electricity markets along with the policies of state governments and the actions of individual retail sellers of electricity all play a role in disconnect between costs for generating electricity  and prices at the retail level.  We don’t have much control over the  supplies of electricity beyond our state but we do have some control over the mix of suppliers of electricity which determine the cost of fuel for generation and we have a lot of control of the structure of retail markets and many other factors that determine the non-generating costs of electricity in the state and ultimately prices at the retail level.

What’s the Breaking Point for Oil Prices in Northern NE?

October 17, 2012

Because the Northeast is the one region of the country where a high percentage of households heat with oil, high oil prices can take a particularly heavy  toll on household budgets in the region.  Not all states in the region are similarly affected however.  Maine get hits hard because of its weather, the fact that its industrial mix is more energy dependent than say NH , MA, or CT, and even VT.  Plus their extensive tourism industry gets hurt when gas prices rise.  In NH, a lot of economic activity also depends on travel to the state which is hampered by high gasoline prices, and overall, NH has a relatively high rate of non-discretionary driving (that is we have a bit longer average commutes and a higher percentage of commuters traveling further) that hurts budgets when gas prices rise but our industrial base uses less energy per dollar of GDP than most states (MA and CT are lower in NE).  I’ve done some econometric modeling to see how sensitive employment changes are in New England to changes in the price of oil and gasoline.  All states are affected by higher oil and gasoline and all energy prices but the MA economy is somewhat less sensitive (the elasticity of employment with respect to oil prices is lower) than any of the  Northern New England states.  In Northern NE, NH is the least sensitive to oil prices but as the chart below shows, even at current oil prices, or at the average price during all of 2012 (about $96), employment in NH is 2,000-3,000 lower than it would have been if oil prices had remained at 2010 levels.

Higher oil prices act like a tax increase on the consumer, reducing disposable income and resulting in a shift in  purchases away from some goods and services to pay for higher energy costs.  In addition, high energy prices (especially gasoline prices) have a tremendous negative psychological impact on household and consumers confidence and sense of economic well being.  How much is too much of an increase in oil prices in Northern NE?  At what point do higher oil prices (which largely determines gas prices) tip the region into recession?  Based on the same models used above, the point at which slower job gains or actual job losses would occur is probably at a sustained price (for months on end) of at least $130 to $135 bbl.  But that changes depending on economic conditions and is also a function of the energy intensity of each state.   Strong economies can take more shocks without falling into recession.  In a weak economy it takes a smaller oil price increase to induce recession.  In NH, the breaking point price is now probably closer to $125 – $130 bbl, and in Maine a bit lower, while in Massachusetts, the price that would induce recession is probably closer to $140.

Burn More Gas to Burn Fewer Dollars

October 15, 2012

The National Oceanic and Atmospheric Administration is forecasting over 20 percent more heating degree days for East of the Rockies and depending on your fuel, heating costs could be up by as much as 19%  over last year (if you heat with oil).  That’s bad news for the almost 50% of NH households that heat with oil  (compared to just 6% nationally).

The growing disparity between oil and natural gas prices during the past decade ( graph above) has led to greater use of natural gas in the commercial, industrial, and electric industries in NH and elsewhere,  but NH still lags in natural gas usage as a percentage of all energy use in the state.

That is unfortunate because later this decade growth in domestic supply of natural gas (led by dramatic increases in the supply of shale gas) is forecast by the U.S. Energy Information Agency to outstrip growth in demand.  Prices, although expected to rise gradually, are still forecast to be lower in 2035 than they were in 2005.

Stable natural gas prices should make investment in natural gas conversions more attractive to NH  households. Lending programs by NH banks and credit unions, directed at energy efficiency,  could facilitate that.  But it is in transportation that conversion to natural gas could have the biggest impact on NH’s and the nation’s energy expenditures and our need for oil imports.  The last time I checked, however,  there were no dealerships in NH offering the one natural gas powered passenger vehicle produced by major auto manufacturers, there are less than a dozen natural gas “filling stations” in the state, and there are no rules and regulations in place for homeowners to make use of the natural gas lines to their homes by installing already commercially available residential natural gas auto refilling equipment.