2. Medors.in DESCRIPTION Off-grid refers to not being connected to a grid generally National grid Off-the-grid homes are autonomous, they do not rely on municipal water supply, sewer, natural gas, electrical power grid, or similar utility services On 13 April 2006, USA reported that there were some 180,000 families living off-grid

3. GROWTH OF off GRID SYSTEM Medors.in

4. components  Roof mounted solar panels  Array DC disconnect  Charge controller  Battery  System meter  Main DC disconnect  Rectifier  Inverter  Solar junction box

5. How it works  PV cells are made of special materials called semiconductors and in this case, silicon.  When a photon (a light particle) hits the panel, it has enough energy to knock an electron loose, allowing it to flow freely.  The panel then has several electrical fields to force the electrons to move in a certain direction, creating a current which can be used to do work. Medors.in

6. Types FLAT ROOF MOUNTEDINTEGRETED ROOF MOUNTED

7. Medors.in CURRENT DEMMAND IN WORLD Around 0.1% of primary energy demand Solar electric installations total 200MW in 1999, 280MW in 2000 and 340MW by 2001 and 427MW in 2002

8. Medors.in PROS AND CONS PROS  Very clean, sustainable, durable, low cost for maintenance.  Solar energy at selected uses (off-grid) already is quite competitive among other energy sources.  The solar energy cost is coming close to the grid connected at some region. In Japan, there is a sign of self-sustaining growth of market.  Although still with subsidies, solar energy is expanding at the fastest rate among other energy sources.

9. Medors.in CONS  Expensive for Consumers and Producers  Two years output needed to just equal the amount of energy used in production  Large land areas needed to produce energy on a power plant scale  Limited by intermittence. Stable grids require traditional generating facilities or costly backup to ensure uninterrupted supply.  Due to PV efficiency and low market demand, technological progression is slow.  Environmental concerns in production and disposal

10. Medors.in WELCOME OFF GRID IN YOUR TOWN THANK YOU