Here is a photo I took of a house around the corner from me. As you can see, it has solar panels on 2 separate roof areas. In solar jargon, you would say there are 2 “strings” of solar panels. The main string is facing North, which is the best roof orientation for solar panels. […]
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News that the Perth-based renewable energy company Hyperion Energy is planning to build a solar tower in mid-west Western Australia sent your correspondent scurrying to the research files this week. According to the company website, Hyperion have purchased a 127,000 hectare site near the town of Tuckanarra. The site is near mines and an airport and […]
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In Part #1 I went into great detail about why the “Max Power” quoted on your solar panel specification sheet and the real max power you will actually get from that panel are very different numbers. I showed you how to calculate a more accurate max power by using some little known temperature specs. In this post […]
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Does a solar panel specification with “Max Power” rated at, say 190W, really produce a maximum power of 190W when it is on your roof in the blazing sun? Short Answer: Not on your nellie! The max power rating (in Watts) that your solar panels are rated at is the figure that everyone quotes when […]
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I got this email today: “Hi Finn, I’ve got a quote for a 1.5kW solar system for $2500 and a 3kW system for $6000. I want 3kW. Why don’t I just buy 2 x 1.5kW systems??? Cheers, Bob” Bloody good question Sir! In fact I can’t believe more people don’t ask this question. But, as […]
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Fascinating article this. The UK’s only Green MP, Caroline Lucas, takes to the pages of The Guardian to launch a broadside against the UK Government’s investment policy in relation to solar energy. The UK Government this week lost an appeal in the High Court against a lower court’s ruling that its retrospective attempt to change […]
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In my last blog post I explained how to find an inverter’s real-world efficiency instead of relying on the inverter manufacturer’s numbers. The CEC or European Efficiency numbers that I talked about are a much better number to use when comparing solar inverters. And for most people they will be all you need. However if […]
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Solar inverter efficiency is a critical specification that directly affects the efficiency of your entire solar system. It is almost always a much more important consideration than solar panel efficiency. All the power generated by your solar panels has to go through your inverter before you can either use the power in your home or export […]
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Thinking of buying a solar power system to kill your electricity bill? Then this one simple action could shave a whole kW off the size of solar system that you need to buy to get that magical zero dollar electricity bill.
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The British-based solar energy charity organisation SolarAid has teamed up with Cambridge-based solar technology company Eight19 to provide solar energy at affordable prices to poorer people in rural parts of Africa. SolarAid are a charity group working in rural areas throughout eastern and southern Africa with a bunch of great ideas. According to their website […]
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