At least on smaller solar systems, the energy is usually stored in 12 Volt DC batteries. While you can use 12 Volt directly for some light bulbs and a few appliances, it is usually easier to transform the energy to 220 Volt AC – just like the one from a regular power outlet.
This is what you need an inverter for 🙂
The following inverters are pure sine inverters, which is like the royal class of inverters, as they produce power identical to that what you get from the grid, as such most appliances and device should work without any troubles, especially as our units run with 60 Hz – watch out for other imports that only do 50 Hz (which is globally way more common)
- 500W inverter – 12 Volt DC-in 220 Volt 60 Hz AC out: Php 5500 (lowered from Php 6500)
- 1000W inverter – 24 Volt DC-in 220 Volt 60 Hz AC out: Php 11500
There are also much cheaper (around P1000) inverters on the market, but they have modified sine wave and run only limited devices (no refrigerator for example) and have a tendency to die in stress situations.
Still we will try to stock these also, as they might do the trick for occasional use of a small laptop or such.
Grid-Tie Inverter systems
If you want get serious with solar power for your home, we also carry grid-tie hybrid inverters.
These inverters are capable to work in Netmetering Setups. Here you don’t need to buy a costly battery bank, but you just “sell” your energy to your Power Distributor or you spin your meter during daytime backwards (Netmetering) to end up with a lower or ideally Zero electricity bill. “Selling” solar energy to the grid is much more efficient, as you don’t lose energy in the battery storage process. Given the savings on the batteries these kind of systems can amortize quickly.
Keep also in mind that a grid tie inverter doesn’t get stressed by your appliances, as it will just collect the energy of your panels and make them available to your house and put the rest into the grid. If you are running multiple aircons or industrial tools, the grid-tie inverter doesn’t care, if energy is lacking, it will be just taken from the grid. Inverters have the bad reputation that they break if they have manage critical high loads, but that is history with a grid tie inverter!
For the grid tie inverter we use German made Sunpower SMA Sunnyboy for the ultimate in quality – they come with 5 years warranty and can be serviced within the Philippines.
The cost of the system varies depending on location and current prices, but roughly spoken you get a 3,000W system for less than P300,000 including inverter, wires and solar panels. A grid tie inverter like the Sunnyboy has a built-in high-end MPPT Solar Charge Controller for maximum power harvest.
Mentioned 3,000W system can neutralize a P4,000 electricity bill, so your annual savings are P48,000, so after less than 7 years the system can be amortized. Electricity bills are likely to increase, thus amortization will be even faster. It’s not rare for a grid tie system to run decades without need for service! Now THAT’s what we call a savings account, while doing something good for the environment and your local power utility.
You might also think of getting a slightly larger system than currently needed, as in our case for example, we shifted to electric cooking and daily bread baking and removed expenses for LPG as well. Electric driving is the next topic to be considered as E-scooters, mono-wheels and even cars are becoming widely available these days…
We offer inverters between 1300-7000W to match your needs. You can also run multiple units in a system.
Please keep in mind that we are not installers, but a German engineer will visit your site, deliver the items and give your workers exact directions what to do and do trouble shooting if needed until the system is up and running. This has for you and for us the advantage that aside from lower installation cost if minor things need fixing you don’t need an out-house expert.
You might be surprised that a grid tie solar system DOES NOT protect you from brown out. If there is a power outage, the grid tie inverter is required by law to also switch off to not endanger the lives of the people fixing the grid plus it can not provide a steady supply of energy without secondary source (eg. grid or batteries).
We solve this problem by installing a secondary small solar system that powers just some essential lights, Internet router and other gadgets – see our solar systems page. But keep in mind that the more grid tie systems are installed the less likely it is that the Philippines will suffer from brown-outs, especially during the critical dry season!