A few basic guides to get you started on solar and home efficiency:
A complete DSWH system can be installed for $4,000 to $7,000, depending on its size, complexity and the climate.
Solar hot water systems come in two flavors: passive and active. In warm climates, a simple passive system can provide plenty of hot water.
For residential application, PV falls into two main categories. First is grid-tied, where the home generates its own electricity but can also draw power from the utility company at night. The second is off-grid, where the home must generate its own power, storing energy in batteries for use at night.
- Learn how to calculate the size of a grid-tied photovoltaic system by assessing your use, roof, and yard.
A kit costs around $1,500, or make one yourself by getting the materials at a local hardware store.
If you want to offset $100 a month in utility bills, the right place to start is by looking at your current home.
Basic passive solar heating and cooling is free if implemented during design, and the enhanced systems usually pay for themselves in a few years.
Wind power is collected and converted by the rotor, so the single most important characteristic of the turbine is its rotor size.
A GSHP system can save 50 to 60 percent on a typical home heating bill.
Solar energy technologies are simple, but installing an array is a complex job, calling for both technical expertise and the ability to navigate the thicket of permits and incentives to get your project approved and financed.
- Related article: How to Work with Your Installer