6. Installation. We will contact you to schedule installation of your System. During installation, we might choose to make minor repairs commonly needed to install the System at no additional cost to you (like simple electric upgrades and roof preparation). We promise to repair or pay for damage we directly cause to your home or your property during installation of your System. If we fail to do that, please let us know, and we will make the repair (or have someone repair it) at our cost (and that will be your only remedy). But you need to let us know in writing and within a certain amount of time following the damage: within 10 years for Solar System installations, 4 years for Powerwall installations and 1 year for anything else.