Comments on: Solar Photovoltaic Electricity to hit the Power Grid? http://secondlawoflife.wordpress.com/2008/02/24/solar-photovoltaic-electricity-to-hit-the-power-grid/ Energy, Technology, and the Future of Earth As We Know It Thu, 05 Nov 2009 19:23:44 +0000 http://wordpress.com/ hourly 1 By: How to Get Six Pack Fast http://secondlawoflife.wordpress.com/2008/02/24/solar-photovoltaic-electricity-to-hit-the-power-grid/#comment-1395 How to Get Six Pack Fast Wed, 15 Apr 2009 14:35:56 +0000 http://secondlawoflife.wordpress.com/?p=108#comment-1395 Hey, nice tips. I'll buy a bottle of beer to that man from that forum who told me to go to your site :) Hey, nice tips. I’ll buy a bottle of beer to that man from that forum who told me to go to your site :)

]]> By: John http://secondlawoflife.wordpress.com/2008/02/24/solar-photovoltaic-electricity-to-hit-the-power-grid/#comment-1372 John Mon, 16 Mar 2009 21:06:24 +0000 http://secondlawoflife.wordpress.com/?p=108#comment-1372 Hi KS, Here a few comments: 1) Average prices are taken because of the large spread in local electricity prices. Thus it are not so much averages in terms of time but in terms of localization 2) Yes this is indeed a fair consideration. What does it costs to add new capacity. 3) I am not 100% that I understand your point. Perhaps you can ellaborate? Thanks for your comments. Rgds, John Hi KS,

Here a few comments:
1) Average prices are taken because of the large spread in local electricity prices. Thus it are not so much averages in terms of time but in terms of localization
2) Yes this is indeed a fair consideration. What does it costs to add new capacity.
3) I am not 100% that I understand your point. Perhaps you can ellaborate?

Thanks for your comments. Rgds, John

]]> By: KS http://secondlawoflife.wordpress.com/2008/02/24/solar-photovoltaic-electricity-to-hit-the-power-grid/#comment-1366 KS Thu, 05 Mar 2009 00:29:04 +0000 http://secondlawoflife.wordpress.com/?p=108#comment-1366 John, There are several items in the data & graph that need clarification. 1. grid parity should compare PV cost to current cost, not avg price. Comparing PV' cost with the current avg price is apples & oranges, except that cost better be lower the price. 2. from the utility perspective, the cost of PV needs to be compared to the cost of the next power plant. We should compare the cost of incremental supply - the next plant to produce power. 3. For a fair comparison, PV should be compared to a peaker plant (say a gas turbine) since PV cannot run all the time (although PV's peak power roughly coinsides with peak demand). John,

There are several items in the data & graph that need clarification.

1. grid parity should compare PV cost to current cost, not avg price. Comparing PV’ cost with the current avg price is apples & oranges, except that cost better be lower the price.

2. from the utility perspective, the cost of PV needs to be compared to the cost of the next power plant. We should compare the cost of incremental supply – the next plant to produce power.

3. For a fair comparison, PV should be compared to a peaker plant (say a gas turbine) since PV cannot run all the time (although PV’s peak power roughly coinsides with peak demand).

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