Nature has given sunlight
in abundance to mankind. Solar energy and wind energy are mostly
available throughout the year. An equipment working on solar
and wind called Wind- Solar Hybrid System can generate electricity.
Solar energy is available only during day-time whereas wind
energy is available throughout the day depending upon the atmospheric
Wind and solar energy are complementary to each
other, which makes the system to generate electricity almost throughout
the year. The main components of the Wind-Solar Hybrid System are
wind aero generator and tower, solar photovoltaic panels, batteries,
cables, charge controller and inverter. The Wind -Solar Hybrid System
generates electricity that can be used for charging batteries and
with the use of inverter we can run AC appliances. Wind aerogenerator
is installed on a tower having a minimum height of 18 mtrs. from the
ground level. Because of the height, the aerogenerator gets wind at
higher speed and thereby generates more power.
Wind aerogenerator starts generating power
at a cut-in speed of 3.1 m/s. The aerogenerator generates three
phase AC power, which is converted into DC through the charge
controller. The solar photovoltaic panels generate DC power,
which is connected to the charge controller. The generated DC
power is then stored in the battery bank. The batteries require
minimum maintenance and their life is around 5-6 years. The
stored power of the batteries is connected to utility through
pure sine wave high efficiency inverter, which converts D.C.
power into A.C.. Various instruments are incorporated in the
system for controls, safety and indication.
The energy meter displays power consumed by various
gadgets. Necessary precautions are taken to protect the aero generator
from damage due to excessive wind speed. Both the aero generator and
PV system are regulated through EZ wire control module to control
battery charging. Over charging and deep discharge of batteries are
regulated in the control module and overcharge is diverted into DUMP
LOAD for protection. Electricity stored in the battery is converted
into AC through inverter and is utilized for light, fan, computer,
fax machine etc.
The Wind-Solar Hybrid System is particularly
useful where conventional power is difficult to procure due
to high costs and where power failures are frequent. It has
proved to be a boon at such places. It has different capacities
ranging from 400 Watts to 10 KW . On clear sunny days, the system
will produce 2.5 to 3.0 units per KW of the installed capacity.
However, it depends on the wind speed and solar radiation available
at the particular site. The approximate cost of the system is
Rs.2.25 to 2.50 lakhs per KW. MNRE provides subsidy of 40 to
65% of total cost for different categories of beneficiaries.
The Wind-Solar Hybrid System is
particularly useful where conventional power is difficult to procure
due to high costs and where power failures are frequent. It has proved
to be a boon at such places. It has different capacities ranging from
400 Watts to 10 KW . On clear sunny days, the system will produce
2.5 to 3.0 units per KW of the installed capacity. However, it depends
on the wind speed and solar radiation available at the particular
site. The approximate cost of the system is Rs.2.25 to 2.50 lakhs
per KW. MNRE provides subsidy of 40 to 65% of total cost for different
categories of beneficiaries.
Total of 981 KW capacity (157 Nos.)
systems are installed in Maharashtra since inception of this programme
from 1998 to 31/03/2011 and In the financial year 2010-11 MEDA has
installed 307 kw capacity wind hybrid systems at 31 sites in state
of Maharashtra. During the year 2011-12, work for 431.14 kw capacity
at 32 sites is in progress. In addition to this MEDA’s target
for the year 2011-12 is to install the 110 kw capacity wind solar
hybrid systems at various Ashram School/ Hostels and Rural Hospitals.
Also Proposals of 272.8 kw capacity under market mode has been submitted
to MNRE by various manufacturers to MNRE for sanction of CFA. The
beneficiaries who have installed the Wind-Solar Hybrid System include
the Govt., Semi-Govt., trusts, private institutions, academic institutions
etc. The demand for the system is on rise and it is becoming popular
as an alternate system for conventional power. MEDA has installed
a system of 11.2 KW capacity (wind - 3.2 KW and SPV -8.0 KW). It generates
around 25 units per day. It was commissioned in December 2001. 14
Nos of computers and 5 printers, one display board and 22 CFL’s
and are connected with it.
Wind Solar Hybrid System State Poilcy
Yearwise List of Installation of Wind Solar Hybrid System in Maharashtra
and List of registered Manufacturer /Dealers