What are the challenges of procuring a renewable energy electricity system?

Building your own electricity generation off the grid is an attractive idea – freedom, self-sufficiency and connection to nature. But many people are surprised by the amount of detail and technical choices required to make a successful system. So what are the most common challenges to be aware of when procuring a renewable energy electricity system?

Variation in solar panel output

Solar panels are an excellent means of generating electricity, but the energy they produce varies greatly depending on the weather and the seasons:

• Cloudiness, shadows on branches and short days reduce yields significantly.

• From November to February, the yield in Finland is very low – which is why an aggregate is often an essential backup system.

Wattium’s energy-efficient solution requires fewer panels, allowing you to save wood around the cottage and reduce fuel consumption in the winter season.

Battery – the heart of the system and the challenge

The battery stores energy for use when the sun is not shining. Herein lies the biggest challenge for many off-grid systems:

• Lead-acid batteries wear out quickly and cannot tolerate deep discharges.

• AGM and gel batteries offer an improvement, but even they have a limited lifetime.

• Lithium iron phosphate (LiFePO₄) batteries are superior in terms of durability, capacity and safety.

Wattium uses a special LiFePO₄ battery that can be charged even at temperatures below 0°C – a crucial advantage in Finnish conditions.

Inverter – the cornerstone of power quality

The inverter converts the direct current from the batteries into 230V alternating current suitable for home appliances. Here again, quality and technology are key:

• Modified sine wave is not suitable for sensitive devices.

• High-Frequency inverters can limit power, especially during start-up peaks.

• Low-Frequency inverters provide a reliable, clean sine wave and can withstand demanding applications.

The Wattium combines high output power with low self-consumption, allowing you to run several high-powered devices simultaneously without worrying about battery drain.

Installation and safety

Self-built systems require careful planning and installation skills. An incorrectly constructed electrical system can create a fire hazard or damage equipment.

The Wattium is pre-assembled and encased, ensuring fire and electrical safety and a neat appearance – ready to use.

Ease of use and monitoring

Energy management is an essential part of off-grid life. Many systems offer applications, but they can be technical and complex to use.

Wattium’s user interface has been developed with the user in mind: energy consumption, charging status and settings are displayed at a glance in the mobile app. Important functions such as setting the sleep mode are also easy to perform.

Aggregate – backup power for the dark seasons

Since solar is not always enough, an aggregate is an important part of a reliable system. The important thing is to choose:

• An inverter-aggregator that produces high quality electricity and is quiet.

• Remote start, allowing automatic or mobile control of the aggregate.

Wattium recommends a carefully selected, high-quality model that works seamlessly with the system and minimizes fuel consumption.

The purchase of a renewable energy system involves many important choices: panels, batteries, inverters, commissioning and monitoring. Once these things are done right, you can enjoy truly worry-free and sustainable electricity – all year round, whatever the weather.

Wattium is designed for just that: a simple, safe and reliable solution that takes the convenience of everyday life where the grid doesn’t reach.