I'm well advanced on building a home office / lab in the garden of our bungalow we moved in to this year. It happens to be next to the garage, which has about 8 square metres of roof, angled at a suitable pitch and facing the right way for some solar power. It has been calling me to find some pre-loved solar panels to help power my rather energy-hungry hobbies of computers, music and electronics, and the UK have today announced changes to the rules on feed-in tariffs for new installs, which means there will be some spare panels coming on the market soon. That got me thinking about energy storage, and I quite literally did a search for "DIY Powerwall" on Google. That led me to the Motherboard article on DIY Powerwall builders using recycled laptop batteries, which led here.
I intend staying.