Showing posts with label Eskom. Show all posts
Showing posts with label Eskom. Show all posts

Tuesday, June 14, 2011

Google backs Renewables. Why don't we?

"If you had the choice to pay less for clean power than you currently pay for dirty power. Wouldn't you do it?"...


Unless you own major shares in a coal fired power station, you would probably answer, "Hell, yes!". If not, I fear you may have stumbled upon the wrong blog. If not for the obvious chance to combat climate change, the question is essentially asking would you be interested in paying less for the power you consume today! This is what Google are now offering to US citizens. Google has just invested $280 million to create a fund that will be used to finance solar installations. In partnership with SolarCity, a company that helps homeowners make the transition to solar energy by leasing the cost of the installation and maintenance of the solar system. What is more, is that SolarCity guarantees the maintenance, warranty and power output of the panels. This effectively removes two of the major issues for homeowners when deciding to make the transition to renewable energy, High initial start up cost and whether it will deliver as promised.  The concept and investment is best described in the video below.



I know that I am an Apple fanboy and all things Google should be considered  'Anti-Jobs', but I would expect nothing less from a company that has continued to push the boundary of innovtion especially in the environment of cloud computing . This investment brings the total investment made by Google in the renewable energy sector to $ 680 million. Google.org is the charitable sector of Google and they are in essence ensuring the success of their company by investing heavily to combat climate change thereby ensuring that they still have customers in the years to come. Whereas most corporations talk green, Google has already invested a further $168 million in a Mojave Desert solar energy plant and have recently purchased 20 years of wind power to power one of its data centres in Oklahoma. Their most innovative plan for the future has to be the patent they recently applied for, for floating data centres powered by wave power! This is what can be achieved when you foster a culture of innovation in your organisation. A book that talks about this culture in detail is 'The Google Story' by David A Vise and I would unwaveringly recommend it to both geeks and non geeks alike.



Lets put these figures in perspective, shall we. The cost for the Medupi Power station in South Africa is estimated to be in the region of R 125 Billion and Kusile will cost Eskom (i.e. the taxpayer) a further R 140 Billion. Assuming a very conservative exchange rate of R10/ $ that gives the total investment we as a country are making in the next 8 years for dirty power as $ 26,5 Billion. Of course this excludes and carbon tax that may be levied by the government in the future because although that will not increase the cost of the power stations, it will definitely increase the cost that you and I pay for power. Remember also that this does not include all associated projects that would be required i.e. strengthening of transmission infrastructure.

For as long as Eskom is left in control of our country's Demand Side Management Program, I cannot see us progressing in the right direction. The country insists that Eskom needs to be efficient and function as a business, making profits to fund future capital expansion and yet we ask them to convince people to use electrical power ( their only product) sparingly and less wastefully. Is the conflict apparent to you? I believe the time has come for us to start thinking out of the box. No. I am not asking for something that extreme. I am just saying isn't it time we at least start pursuing some of the proven technologies and funding models out there. Instead of continuing to chase short term solutions that would result in long term problems.

Sunday, February 13, 2011

The Solar Water Heater Investment

Most of you, who know me will know that I am a tree hugging idealist which is rather ironic when one considers that I am presently employed by the largest contributor of carbon emissions in the world. Although I have tried to convince (and failed to convince) many people on why now is the time to invest in a solar water geyser, I have hypocritically (not until now that is) found the time to install one myself. I always found some excuse to delay the installation and honestly the cost of the installation was always a factor in the back of my mind. It is easy to go around talking green and using CFL globes at home but when it comes to actually making a R20 000 investment, excuses to delay are easy to come by.

Fate decided to force my hand when I awoke one morning to find my geyser with a minor leak. My insurance said they would pay for it to be replaced and I hastily made the decision to replace my geyser with a solar water geyser.  The time just seemed right so with little shopping around I called a company I had made contact with previously and ordered my new solar water geyser. Since I was driving solo at the time, I started to think about my decision and whether it was the correct choice financially. A few simple assumptions and I was be able to dispel the myth (propagated by most plumbers), "That it is just too expensive and makes no financial sense".


Modern day solar water heaters are not an eyesore and the unit comes supplied with a geyser blanket for the tank and 8m of thermoflex piping which will insulate the first few metres of your hot water piping. The price quoted of R18 500 is all inclusive incl. the electrical installation and accompanying certificate of compliance. The keypad installed in your home allows you the opportunity to manually over-ride the system, set the minimum temperature required and observe both the temperature of the water in the geyser and the water in the exposed pipes. As may be observed, one can expect temperatures in excess of 60 degrees celsius on a hot Durban day.

In my calculations below I was very conservative, so in reality, I believe that the payback time will be even sooner than indicated by my calculations. I assumed a monthly electricity bill of R700 and a geyser consumption of 30% (which is the lower end of the range which goes up to 50% in some studies). I have also conservatively assumed that Eskom would be granted a 20% increase in MYPD3 (this is the agreement between Eskom and NERSA that determines the electricity price increase from 2013 to 2015). I believe this to be conservative because Eskom was granted a 25% increase during MYPD2 and this was before Eskom accepted a R1,5 Billion loan from abroad. Since Eskom earns revenue from electricity sales, tariff increases are the only viable means of repaying those debts in the future. If anybody deisagrees with my assumptions, I would love to hear form you as my aim here is to promote understanding and not sell solar water geysers.

I also understand and appreciate that this is not an entirely accurate financial justification because it did not for example take into account things like  'Future Value' and 'Net Present Value' but I hope that someone with a better understanding of these concepts than I have could rework these and let us know the results. All I know is that in a relative short period of time, I will be getting a return on investment. TAX FREE! The normal calculation is shown below. It shows that you should expect to start seeing a return on investment in around 3.5 years time.


Total Cost
R 18,500.00

Eskom Rebate
R 6,098.00

Amount remaining
R 12,402.00






Average Electricity Bill
R 700.00

Percentage due to Water heating
30

Price increase MYPD2
25

Assumed price increase MYPD3
20







Year 1 Year 2 Year 3 Year 4
Monthly savings R 210 R 263 R 328 R 394
Annual Savings R 2,520 R 3,024 R 3,938 R 4,725
Capital repayment R 9,882 R 6,858 R 2,921 R-1,805


The calculation below shows the return on investment period for a situation like mine, when you can also factor in the geyser replacement payment from the insurance company. I assumed an amount of R5000 for this payment as a typical geyser replacement would cost in the region of R6000 with an additional R1000 being deducted for a rebate. This shows that you would pay back your initial capital investment in about 2 and a half years.



Total Cost
R 18,500
Eskom Rebate
R 6,098
Geyser replacement cost
R 5,000
Amount remaining
R 7,402




Average Electricity Bill
R 700
Percentage due to Water heating
30
Price increase MYPD2
25
Assumed price increase MYPD3
20





Year 1 Year 2 Year 3
Monthly savings R 210 R 263 R 328
Annual Savings R 2,520 R 3,024 R 3,938
Capital repayment R 4,882 R 1,858 R-2,080
 
I hope that these calculations give you the necessary clarity to wade through the bullshit next time you discuss this topic with anyone. I went with a company called SOLARIZE (031 579 2043) and I found them to be very efficient and professional even taking the time to help us with the rebate application. All that we effectively had to do was insert our details, affix a postage stamp and post. There are other companies registered with the Eskom rebate program and you can obtain the details for a regional supplier from www.eskom.co.za/dsm or call the solar programme help desk (011 800 4744).