Looking for competitive wholesale prices on household energy storage solutions in Johannesburg? This guide breaks down market trends, pricing factors, and smart purchasing strategies for bulk buyers. Government. With Eskom's latest 18. 65% tariff hike approved in February 2025 and rolling blackouts lasting up to 10 hours daily, South African households are facing an energy perfect storm. But here's the kicker – solar power installation costs have dropped 42% since 2020 while battery storage efficiency has. In 2009, when I first traveled to South Africa for Scatec Solar to develop the market for solar PV, the price of a solar panel was $2,2 per watt. 2 billion by 2031, registering a CAGR of 23.