Investing in sustainable solutions could save you thousands per year

Did you know that heating and cooling your home, along with the hot water you use for showers and the washing up, are the two biggest contributors to household energy bills?

Renewable energy at home

Heating and cooling make up approximately 34 per cent of a household's energy use. Water heaters are the second biggest contributors, at around 29 per cent.

When it comes to solar options, Stephen Cranch, General Manager of Solahart says there are two main categories to consider: solar hot water and solar panels.

Stephen says that installing solar hot water is a great starting point for households looking to reduce their environmental footprint and cut their energy bills.

"Solar hot water systems use energy free from the sun to heat water, which is then stored in a tank to use when needed," he says.

Stephen says switching to solar hot water could reduce hot water energy consumption by up to up to 75 per cent in summer and 25 to 45 per cent in winter, so is a great starting point for your solar journey.

The second option available to Kiwis is solar power, also referred to as photo-voltaic (PV) solar panels. Solar PV systems produce electricity from sunlight that can be used by the home, and any excess could be stored in a battery or smart-electric water heater. If there is no storage system installed, excess solar energy could be sent back into the grid.

Installation of a 6kW PV solar power system could help reduce a typical family’s greenhouse gas emissions and save on annual energy bills, ultimately paying for itself after only a few years.

A 6kW PV system with quality components and a professional installation will start from $13,000. This can vary depending on where you live and should be an important part of the research you undertake before installing solar,” says Stephen.

Optimise your home for the climate

While there are steps you can take to reduce your bills and reliance on fossil-fuel energy, there are also steps you can take to significantly the need for power in the first place.

Around 40 per cent of a home's warmth can be lost, and 80 per cent gained, through windows alone. Making your windows more energy efficient will go a long way to reducing your reliance on heating and cooling.

Glass technology has come a long way in recent years, offering a huge range of options to improve your home's efficiency. From glazing to film coatings to simple shade cloths, there's something for every household and every budget.

On the lower end of the cost spectrum, consider installing shading over windows in summer to reduce the amount of heat directly entering the home, and ensure windows are properly sealed to prevent heat loss in winter months.

With a slightly higher budget, you can look to film coverings and laminated glass which are more expensive than shades, but more effective too. They also carry the benefit of improving the efficiency of your windows without sacrificing views or obstructing light.

Double glazing is a very heat efficient option that will yield big savings, but requires a larger upfront investment.

Double glazed windows use two panes of glass with air in between to act as insulation, reducing the amount of energy required to heat and cool the home.

The cost for double glazed windows can start as low as $210 per square metre.

Of course, this price varies based on your location, installation costs, and number of windows you are installing. However, if you are working on a smaller budget, start with retro-fitting south facing windows first as these will generally get the least amount of sun and lose far more heat than they gain.

Better for the planet, better for your wallet

Heating and cooling your home and hot water systems are the two biggest contributors to household energy consumption, but did you know that household electric appliances and home lighting are responsible for approximately 20 per cent and 13 per cent of your bills, respectively?

Here are some other helpful tips for cost saving, green solutions:

• Switch lightbulbs in the home to energy efficient LEDs
• When it comes time to replace appliances, compare energy rating stars
• Explore water-saving options such as in-ground rainwater tanks and greywater systems
• Install smart meters for electricity and water to closely monitor your usage and track your progress via a smartphone

The opinions expressed in this article are the opinions of the author(s) and not necessarily those of Resimac.