Pieter Muller
Founder, FlowLeads · Durban, South Africa
Pieter Muller is the founder of FlowLeads, a Durban-based solar lead-generation platform for South Africa. A software engineer by background, he built FlowLeads to give SA homeowners honest, data-backed solar guidance — combining PVGIS satellite irradiance with live municipal tariff data, and matching qualified leads with SAPVIA-registered installers.
Articles by Pieter Muller
- Solar guides 15 April 2026 7 min readSolar payback period in South Africa: city-by-city breakdown (2026)
How long does solar take to pay for itself in Cape Town, Johannesburg, Durban and 20 other SA cities? We crunch the PVGIS data and 2026 tariffs.
Read article - Tax & finance 10 April 2026 6 min readHow to claim the SARS solar tax rebate in 2026
The Section 12B incentive lets you deduct 125% of solar panel costs. Here's exactly how to claim it on your ITR12 return.
Read article - Solar guides 5 April 2026 8 min readWhat size solar system do I need? A South African guide
3 kW, 5 kW or 10 kW? This guide explains how to size a solar system for your SA home based on your electricity bill.
Read article - Solar guides 28 March 2026 9 min readBattery backup for load-shedding: the complete 2026 guide
LiFePO4 vs lead-acid, correct sizing, loadshedding stages — everything SA homeowners need to know before buying a battery.
Read article - Product reviews 20 March 2026 10 min readBest solar inverters in South Africa 2026: Deye, Sunsynk, Growatt compared
We compare the most popular hybrid inverters available in SA, with pricing, features and what installers actually recommend.
Read article - Data & analysis 10 March 2026 5 min readEskom tariff increases 2010–2026: the full history
Eskom has raised tariffs by over 600% since 2010. See the year-by-year data and what it means for your solar ROI.
Read article
Want a personalised solar quote?
Same data Pieter writes about, applied to your suburb and bill.
Get my free quote →