challengemining.com

Here's what it says on the challengemining.com website:

One of the disadvantages of solar power is the huge upfront cost. When building new solar systems, we will have to pay for the panels, batteries, wiring, and the workers that install them, and so on. And we invest the solar grid system to store batteries so that specialized machines can operate at night when the sun is no longer illuminated to ensure smooth mining operations. And we want to use the capital contributed by the investors, we borrow and installment over time. Because of the fact that solar panels will pay back their own and save a lot of money by not having to pay electricity bills from power companies like traditional coin mining. Solar energy is a technique that uses radiant light to generate electrical energy and has been used by human to provide power since about 1880. Many people have been mining bitcoin with solar energy, as discussions about miners using solar power to mine online came back in 2012, and every year thereafter. On July 1st, 2012, in a conversation at the bitcointalk.org forum, revealed how bitcoin miners used solar energy: "I have a 1.7kw off the grid solar power setup where I am , it's a remote mining town in Lightning Ridge Australia, " explained by a bitcoin miner in 2012."You couldn't run a GPU farm economically, but FPGAs work fine. I get 1.5GH / sec at 100w from the FPGAs and 350MH / sec at 100w from the GPU. I also have wireless internet, so I'm not connected to any form of power or land line internet." Those are technologies from 2012, but now we have made great progress both in terms of technology and the cost of mining coins with solar energy. With the SHA-256 algorithm, along with modern specialized mining machines, cards running at 24/24 full capacity, we can bring many times more profits than before despite the algorithms of bitcoin are increasingly complex. And above all you will understand that solar energy - the green energy source will really make you money. Join with us, you will no longer be alone in your search for green renewable energy. And we can all be proud that you are using clean and safe energy for the earth and safe for your finance.