Are we on the brink of a Solar Revolution?

Are we on the brink of a solar revolution? Over the past couple of years, there have been some significant breakthroughs in solar energy, specifically in reducing production costs of solar. During this time, the cost of photovoltaic panels has dropped by around 25-30% each year and this price drop shows no sign of slowing down.

In fact, if anything it is speeding up. A few companies have been working on more advanced amorphous panels that have much lower production costs. These have been in production for the past few months, with a cost point of around $0.60 per watt (about 40% cheaper than what we see today). Once production has ramped up, these manufacturers are saying they will be able to sell these panels for around one sixth of that cost.

So what does this mean for solar power? Quite simply, it will become the cheapest means of generating electricity available. At a wholesale cost of $100 per kilowatt (as opposed to around $1,000 today) we could see solar being incorporated into almost anything. Self-charging mobile phones, MP3 players, netbooks and laptops would be standard and the cost of fitting solar power to homes would be so cheap it would offer a payback in only a few months, no matter where in the world you lived. Warehouses and factories would all have photovoltaic roof panels, generating most – if not all – the power they need to operate by themselves. Electric cars would all have photovoltaic roof panels, providing up to 3,000km (1,800 miles) of self-generating power every year. Power companies could set up new regional power stations in just a few weeks instead of the several years it takes now.

The ability to generate electricity at an affordable price would be limited only by the amount of space you have. Got a big enough roof? You need never want for electricity again.

Solar

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Of course we still need some way of storing the energy produced so we can release it when we need it rather than just when the sun is shining, but nevertheless, this is an exciting opportunity. Incidentally, in terms of energy storage, I still have high hopes for ultra-capacitors, but as yet we have seen a lot of speculation and hype and very little in the way of practical usable products. Let’s just wait and see.

In effect, solar has the potential to do two things in the next decade: decarbonise much of our electricity generation and make electricity so cheap that it is effectively free to use.

This changes the whole dynamics of how we view and use power. If electricity is so cheap that it is effectively free, everything starts to change. How are you going to heat your home? Expensive gas or free electricity? Are you going to have a car with an internal combustion engine using expensive fuel, or an electric car with free fuel? If solar power becomes the cheapest way of generating electricity, businesses and individuals won’t choose solar “because it’s green” but “because it is so cheap, you’d be daft not to”.

Michael Boxwell is a technical architect and designer. He is the author of a number of books including the Solar Electricity Handbook and The Electric Car Guide series of books

 

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