Smart Meters (Do they go far enough?)

I am convinced that a major revolution is about to occur in the way electrical grids operate. I am worried that the groups running the Smart Meter pilots in Ireland could miss an opportunity to be ahead of the curve.

Electricity generation and supply has, since the time of Edison, been about meeting inflexible but predictable demand with flexible supply. This inflexible demand has been met by huge generation plant which is dispatched in synchronisation with the predicted demand. This description of electricity networks is about to change.

1) A growing percentage of energy will be generated by non dispatchable supply such as wind, wave and solar.

2) Microgeneration at the domestic level is going to make demand less predictable.

3) Electricity consumption will increase dramatically. As we move away from fossil fuels in our homes we will use more electricity for heat pumps and for automotive (EV and PHEV). This will result is a doubling of our electrical consumption, even if we hold our overall energy consumption static, by the time we achieve our 33% renewable target in 2020. These new loads will be shiftable in time because of the use of hot water and battery storage.

These three changes will make the electrical grid partially inflexible on the suppply side. To compensate for this inflexibility on the supply side flexibility on the demand side will be required. So I believe that the Electric Grid 2.0 will look like this.

1) There will be a realtime price for electricity broadcast and available to every consumer in real time. Currentlyy the wholesale markets operate in this way. Soon the retail markets will follow suit.

2) There will be a spread between the purchase and sale price for electricity. You can decide to produce and sell or buy and consume at any time.

3) Standard time of day tariffs (STOD) will completely disappear. It will make more sense to have tariffs based on wind availablility. For example on 30 March and 16 April this year the wholesale price profile was inverted. On those days wholesale electricity was dearer at night than during the day.

4) Realtime response based on frequency will be widely implemented across the grid to stabilise short term supply and demand mismatch while price signals are being propogated.

5) Demand response will be mostly automated and not depend on user behaviour.

An unusual visionary in this change is Google.

“I could imagine a smart garage where I would plug in my car and the computer handles it. I could even make money by cost shifting….  It solves energy security, energy prices and job creation… and by the way, climate change.”  Eric Schmidt CEO of Google.   Google and GE have formed an alliance to exploit smart grid concepts.

It is vital that Ireland install smart meters that have 15minute power measurement intervals and can cope with real time pricing and not STOD tariffs.

Even though these ideas will apply globally, Ireland is aspecial case. We will, by 2020, have 30% of our energy coming from wind and we ahave a tiny grid size. We cannot copy others in thisregard. We must lead.

I am afraid that we will miss an opportunity.

Which heating fuel is cheapest

This is a great post… I just wish I had got there first

http://wood-pellet-ireland.blogspot.com/2008/09/winter-heating-costs-league-table.html

Fair play Tom

Comparing standby power

Thanks to the good energy magazine for this one. Considering your own energy rates are probably significantly hight than theirs, factor in you own local multipliers. Click on the pic to supersize.

Energy Saving Tips – Switch off

Most modern cars are really efficiency at starting and stopping. That means that if you are stopping the car, it can be worthwhile to actually switch off the engine. Guidance from SEI says that for a 30 second stop it can be worthwhile switching off.

For other car tips check out

Energy Saving Driving Tips – Summer Driving Season 1 Tyre Pressure

Energy Saving Driving Tips 2 – Close the windows

Energy Saving Driving Tips 3 – Take Off Roof Racks/Boxes

National Road Pricing Scheme – Motor Tax

I like cool drinks – most energy efficient option

I’m a fan of having my drinks cold, and have been trying to figure out what is the most energy efficient way to do it. As I see it the options are

Leave the bottle in the fridge

This is a good option because the refrigerator is relatively efficient when compared to the freezer.

The drawback (perhaps) is that you will be keeping a large amount of the liquid (lets say pepsi max… I’m not a coke man) cool for a long time, when you really only need it cool at the time your drinking it.

Use ice cubes

Ice-cubes have the benefit of meaning you have less in the fridge, and so are trying to keep less cool. I mean keeping air cool is less challenging than liquid. Also they give greater flexibility on what drink you may want cooled.

The main drawback is that the freezer is relatively less efficient than fridge (since the bigger the difference between room temperature and the target temperature, the more energy required to achieve it)

At the moment I’m beginning to think leaving the bottle in the fridge is the correct option (which I never do), but I’m interested in getting other suggestions.

Irish Home Energy Scheme – Grants for Insulation

The post your looking for is here

Following up from my post on the HES scheme (a scheme that grant aids insulation, windows, draft proofing etc), could I alert people that the pilot scheme is still running. Following all that cuts talk from the government earlier this week, I suggest to all this blog’s readers that they apply to the scheme now, as it may not be around in January

Plastic Bags – I never realised how funny they can be

Energy Wasting Day

Purchasing carbon – is there an alternative?

Well… I think so… I think Jon Stewart does too…

Energy Saving Driving Tips – Summer Driving Season 1

Summer Driving Season is here. So if you must drive somewhere follow these tips

Tyres 0.5 bar below manufacturers recommended pressure increase wear and fuel consumption by 2-3%. That equates to saving 4cent/litre on the pumps.

Remember – every bit helps

For more on driving -see here