If you have
a swimming pool, the fastest and largest environment return at the lowest cost
is probably a Pooled Energy System.
and returns for various options are shown below:-
As a home owner, you have four basic choices:
Improve Efficiency. For example: replace energy inefficient devices with more efficient ones, for example, replace incandescent lamps with LEDs;
Generate Electricity. For example: install solar PV panels to generate electricity;
Transfer Stored Energy to Peak Times. For example: install batteries for home storage of solar power or off-peak energy and transfer that energy to peak times; or
Do all of the above in a bundle. For example: use Pooled Energy if you have a pool.
All of these choices, apart from Pooled Energy, take significant time to recover the cost of the investment. With the state of the technology at the time of writing, the times in ascending order, are:-
Pooled Energy: pay-back time - 0 years.
Your pool is typically about 30% of your household electricity, so this is probably the largest improvement you can make and the one that pays back the fastest. You will start saving as soon as the pool equipment is installed and operating as there are no net up-front cost (other than chemicals or repairs you may need).
LED Lights: pay-back time - about 2 years
Solar PV panels: pay-back time - about 10 years
Storage Batteries: pay-back time – never (currently)
Batteries are currently not cost effective in urban settings. At current pricing, they cost (considerably) more to install, operate and maintain than buying power from the Grid.
Your Pooled Energy system will provide substantial savings in energy, chemicals maintenance and time looking after your pool, while giving you a better, cleaner, heathier, automatic pool.