Simpa Networks makes modern energy simple, affordable, and accessible for everyone. Simple, maybe; lofty, indeed. Affordability is the heart of the problem when it comes to providing the over one and a half billion people in the world who don’t have energy, with energy. Using flexible and scalable data-driven pricing, buying solar energy is akin to sending a simple SMS. Simpa Networks calls this pricing system “Progressive Purchase.” How does it work? Customers first make a small down payment for a solar PV system and then the rest works much like a pay-as-you-go cellphone service: customers pre-pay for energy and then can “top up” in small installments that they set. All of this can be done through a cellphone. Each time a user pays, it goes toward the end price, which, once completely paid off (that usually takes a family 3 to 5 years), opens up the system for energy.