Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to solar power your home [title] Call a professional. [step] Grid tied systems are probably your best bet, especially if you live in an area with reliable power. By having a grid tied system, you are eligible for tax credits, plus you'll be able to sell your excess power back to your power company.

Ending1: [substeps] Solar backed systems are not as reliable as back-line systems, but they are still fairly cheap. Do research to find the best one for your needs. Ending2: [substeps] It's a good idea to do your searches on the local areas association or such to find the proper grid tied system. For example, you could do a search on www.yelp. Ending3: However, in order to take advantages of these benefits, you'll have to have it installed by a licensed professional. While you may be excited to install the system yourself, it really is better to do it this way, as the high voltage associated with the systems can cause serious injury. Ending4: Don't forget to update your grid connected system at least once a year. [substeps] If you're new to solar power, figure out how often you're going to solar connect your home.

Answer format: ending1/ending2/ending3/ending4