Whereas going off-grid may have been a niche or trendy choice 2 decades ago, today an urban property that relies solely on the grid is becoming less attractive. In the Namibian real estate market, especially in major centres and developments like Osona Village, homes with integrated, functional solar systems are increasingly viewed as premium assets. A “solar-ready” property is no longer optional; it is a strong selling point that helps protect long-term value.

Rethinking the grid
Cities account for more than two-thirds of global energy consumption and over 70% of carbon emissions, according to the International Energy Agency in its report Empowering Cities for a Net Zero Future. As a result, urban energy planning is evolving rapidly.

Traditionally, solar installations were limited to rooftops. Today, planners are considering the entire building envelope. Technologies such as building-integrated photovoltaics (BIPV) allow solar generation to be embedded directly into construction materials. This includes solar windows that capture UV light, as well as solar facades that replace conventional cladding. While these innovations are not yet widely adopted in Namibia, they represent a clear direction for future development.

The bottom line has improved
The cost of solar hardware (panels, inverters and mounting systems) has dropped by roughly 80% since 2010. This has significantly improved affordability for property owners. Depending on sunlight availability and local electricity tariffs, most urban solar systems now pay for themselves within 5 to 9 years, often sooner in high-tariff areas.

Maintenance requirements remain relatively low. However, dust and pollution can reduce efficiency by 10% to 25%, making periodic cleaning essential. Annual inverter inspections are also recommended to ensure optimal performance.

Policies support solar adoption
Namibia’s National Renewable Energy Policy (NREP) aims to increase the share of renewable energy by 2030. One of its key mechanisms is net metering, which allows households and businesses to feed excess electricity back into the grid for a credit.

The Electricity Control Board (ECB) has introduced a 2 MW threshold for small-scale embedded generation projects and streamlined licensing processes. These changes make it easier for property owners to invest in solar.

However, the real financial benefit of net metering lies not in the credits earned, but in reducing grid consumption. With the City of Windhoek proposing electricity tariff increases exceeding 10% and NamPower seeking similar bulk increases for 2026/27, every kilowatt-hour generated and used on-site becomes increasingly valuable.

Budget for batteries
Batteries remain the most significant long-term cost in solar systems, but technology has improved substantially. Modern lithium iron phosphate batteries are typically rated for 6,000 to 10,000 cycles. At one cycle per day, this equates to a lifespan of approximately 15 to 25 years.

According to local EPC Solsquare, lithium batteries introduced to the Namibian market around 2016 are still performing reliably after a decade.

Older technologies, such as gel or deep-cycle batteries, generally last only 1,500 cycles (around 3 to 5 years). While cheaper upfront, they are significantly more expensive over time due to frequent replacement.

To manage costs, homeowners can expand battery capacity incrementally or opt for grid-tied systems without storage. While this removes backup power during outages, it eliminates battery replacement costs entirely.

Your sustaining sanctuary is worth this investment.