If you just need the energy for the pool, a small setup without battery is all you need. Saves you half the price. Panels and inverters are around 900€ in Germany. Putting a battery on it makes another 1,200€ and it makes sense only, if you need power in the evening.
I‘m not sure how GDP is measured for an international company such as Google. Does the entire Revenue count cos the HQ sits in the US? Or is the license fees that it pays to Bahama‘s (in order to avoid taxes) is substracted from the US GDP? Does somebody know how that is measured?