A comparative study has been carried by Gensol on Solar-Wind Hybrid Policies issued by Central Government, Gujarat State & Andhra Pradesh (A.P.) in terms of following: 1) Incentives & Pertinent Charges 2) Evacuation & Metering Scheme 3) Energy Accounting & Banking 4) AC-DC Integration & other important clauses.

1. S.No Clause National Gujarat Andhra Pradesh (A.P.)
1 Agency National Wind-Solar Hybrid Policy
Gujarat Wind-Solar Hybrid Power
Policy-2017 by Gujarat Energy
Developer Agency (GEDA)
Andhra Pradesh Wind-Solar Hybrid
Power Policy -2018 by New &
Renewable Energy Development
Corporation of
Andhra Pradesh Ltd. (NREDCAP)
2 Region(s) - Saurashtra, Kutch & North Gujarat Rayalaseema Belt
3 Operative Period
Remain in force till withdrawn,
modified or outmoded by the
Government.
Effective from the date of issuance till
period of 5 years
Effective for a period of five (5) years
from the date of issuance and/ or shall
remain in force till such time policy is
withdrawn, modified or superseded by
the Government.
4
Eligibility for Incentives
or Benefits
-
The Project(s) developed during
Operative Period of this Policy for 25
years from the date of
commissioning.
The Project(s) developed during
Operative Period of this Policy for 10
years from the date of
commissioning.
5 Project Sizing
The small size of the solar PVs
capacity can be added as the solar-
hybrid component where the wind
power density is quite good.
The small size of the solar PVs capacity
can be added as the solar-hybrid
component where the wind power
density is quite good.
The small size of the solar PVs capacity
can be added as the solar-hybrid
component where the wind power
density is quite good.
Gensol Engineering Pvt. Ltd
Policy Review: Solar-Wind Hybrid

2. 6
Rated Capacity of Wind
or Solar Projects
The rated capacity of one resource
should be at least 25% of the rated
power capacity of other resource.
Consumers may set up Hybrid Project
to extent of meeting RPO without limit
of Contracted Demand/Sanctioned
Load.
For captive and third party models,
the power contracted from the hybrid
project shall be 50% of the sanctioned
load of consumer for each solar and
wind respectively.
The rated capacity of one resource
should be at least 25% of the rated
power capacity of other resource.
7 Evacuation Voltage - -
Both Wind and Solar project(s) should
connect to grid in the same region at
132 KV and above either through
individual or common pooling station.
8
AC Integration
DC Integration
The AC output of the both the wind
and solar systems is integrated
either at LT side or at HT side.
In case HT integration, both system
uses separate step-up transformer
and HT output of the system is
connected to common AC Bus-bar.
The DC output of the is connected to
a common DC bus and a common
invertors suitable for combined
output AC capacity is used to convert
this DC power in to AC power.
Only AC integration will be permitted.
The AC output of the both the wind and
solar systems will be integrated at the
pooling/ sending-end sub-station.
n the absence of a common RPO :
Only AC integration will be allowed.
Separate electrical lines and meters
need to be laid for both until the
pooling or sending-end substation of
the hybrid project
In the presence of a common RPO :
AC or DC integration will be allowed.
Common electrical lines may be used
up to the pooling substation of the
hybrid project.
The AC output of the both the wind and
solar systems is integrated either at LT
side or at HT side.
In case HT integration, both system
uses separate step-up transformer and
HT output of the system is connected
to common AC Bus-bar.
The DC output of the both the wind
and solar PV plant is connected to a
common DC bus and a common
invertors suitable for combined output
AC capacity is used to convert this DC
power in to AC power.

3. 9
Rated Capacity of
Wind or Solar Projects
The rated capacity of one resource
should be at least 25% of the rated
power capacity of other resource.
Consumers may set to extent of
meeting RPO without limit of
Contracted Demand/Sanctioned Load.
The power contracted from the
project shall be 50% of the sanctioned
load of consumer for each solar and
wind respectively for captive and third
party models.
The rated capacity of one resource
should be at least 25% of the rated
power capacity of other resource.
10
Performance
Obligation
- -
Each 1 MW of contracted project
should achieve a minimum CUF of
40%.
11
Transmission Line
Laying Cost
Developers shall undertake
addition/augmentation in the
system up to the receiving end sub-
station at their own cost.
Developers shall undertake
addition/augmentation in the system
up to the receiving end sub-station at
their own cost.
Developers shall undertake
addition/augmentation in the system
up to the receiving end sub-station at
their own cost.
12
Metering
AC Integration
DC Integration
By apportioning the reading of main
meter installed at the receiving
station on the basis of readings of
ABT meters installed on LT or HT side
of the wind and solar PV plant as the
case may be.
By apportioning the reading of main
meter installed at the receiving
station on the basis of readings of DC
meters installed at the DC output of
the wind and solar PV plant.
At Pooling Sub-Station:
In 15-minute time block by installing
ABT compliant meters separately by
the Project Developers.
At receiving end Sub-Station:
On the basis of meter reading of
common meter installed at receiving
end sub-station appropriately
apportioned as per the respective
meter reading of wind and solar
meters.
By apportioning the reading of main
meter installed at the receiving station
on the basis of readings of ABT meters
installed on LT or HT side of the wind
and solar PV plant as the case may be.
By apportioning the reading of main
meter installed at the receiving station
on the basis of readings of DC meters
installed at the DC output of the wind
and solar PV plant.
13 Wheeling of Power
(a) captive purpose (b) sale to third
party through open access (c) sale to
the distribution company (ies) either
Captive use or third-party sale or sale
of power to the DISCOMs.
(a) captive purpose (b) sale to third
party through open access (c) sale to
the distribution company (ies) either at

4. at tariff determined by the
respective SERC or at tariff
discovered through transparent
bidding process and (d) sale to the
distribution company (ies) at APPC.
project specific tariff determined by
the APERC or at tariff discovered
through transparent bidding process
(d) sale to the distribution company
(ies) at APPC under REC mechanism
and avail RECs.
14 Reactive power -
The drawl of reactive power will be
charged as per the GERC Orders
-
15 Transmission Charges
No additional connectivity capacity
charges will be levied for
hybridisation at existing wind/solar
PV plants if already granted
transmission connectivity/ access is
being used.
Transmission charges may be
applicable for the additional
transmission capacity/ access
granted as per prevailing regulation.
Existing Projects :
Where open access is already granted
to the extent of rated capacity of
transmission line/ sub-station of
GETCO and injection of power from
additional wind/ solar capacity to be
set up is restricted up to rated capacity,
transmission charges are not
applicable on such additional capacity.
In the cases where there is capacity
margin in the existing transmission
system/ sub-station of GETCO after
taking into account open access already
granted to the existing wind/solar
project of transmission capacity for
allowing additional capacity, the
transmission charges shall be
applicable on such additional
sanctioned/allocated
New Projects :
Transmission charges shall be
applicable on the basis of sanctioned/
allocated transmission capacity.
Transmission and Distribution charges
shall be exempted upto 50% of the
applicable charges for wheeling of
power generated from new Wind –
Solar Hybrid Power Projects within the
State.
No additional connectivity capacity
charges will be levied for hybridisation
at existing wind/solar PV plants if
already granted transmission
connectivity/ access is being used.
Transmission charges may be
applicable for the additional
transmission capacity/ access granted
as per prevailing regulation.

5. 16 Tariff -
Existing Projects:
The purchase of power from existing
wind/solar capacity shall be in
accordance with the respective PPAs
with GUVNL.
The sale and purchase of power
from additional/ new wind/solar
capacity shall be at the tariff
discovered through competitive
bidding (reverse bidding whenever
required) undertaken by DISCOMs
separately for wind and solar power
purchase.
New Projects:
The purchase of wind/solar power
shall be at the tariff discovered
through competitive bidding (reverse
bidding whenever required)
undertaken by DISCOMs separately
for wind and solar power purchase
until a common tariff mechanism
and RPO for the hybrid project is
evolved.
-

6. 17 Wheeling Charges -
For Captive Use:
In case of injection at 66 KV and drawl
at 11 KV voltage level, 50% of
wheeling charges and 50% of
distribution losses of the energy fed to
the grid at the receiving end sub-
station of GETCO, as applicable to
normal Open Access Consumers.
For Third-Party Sale:
Wheeling charges and losses of energy
fed to the grid as measured at
receiving-end sub-station of GETCO will
be applicable
Hybrid Projects availing open access
for captive use/ third-party sale under
REC mechanism
Such projects will be allowed to wheel
the electricity on payment of
applicable transmission charges/
losses, wheeling charges/ losses and
other charges as applicable to other
normal Open Access Consumers.
-
18
Cross Subsidy
Surcharge
-
For third party sale:
Concession of 50% of cross subsidy
and additional Surcharge will be given.
For projects under REC mechanism:
Cross Subsidy and Additional
Surcharge will be applicable.
50% of the Cross subsidy surcharge will
be paid for third party sale provided
the source of power is from projects
setup within the State.
19 Electricity Duty -
Electricity generated and consumed
for self-consumption/ sale to third-
party within the State shall be
exempted from payment of electricity
duty in accordance with the provisions
50% of applicable Electricity duty shall
be exempted for captive consumption,
sale to DISCOMs and third party sale
provided the source of power is from
projects set up within the State.

7. of the Gujarat Electricity Duty Act,
1958
20 Demand Cut -
Exemption from demand cut to the
extent of 50% of installed capacity of in
case of captive consumption and third-
party sale within the State.
-
21 Supervision Charges - -
Exempted from paying the Supervision
charges to APTransco/Discom(s) only
in case of transmission of power from
State Transmission Utility (STU) to
Central transmission utility (CTU)
22
Deemed Public Private
Partnership (PPP)
- -
Deemed PPP status will be provided for
solar-wind hybrid project.
23
Deemed Non-
Agricultural (NA) status
-
Hybrid parks will be developed on the
same lines as solar parks
Deemed Non-Agricultural (NA) status
for the land where wind-solar hybrid
power projects will be accorded, on
payment of applicable statutory fees.
24 Pollution Clearance - -
Hybrid power projects will be
exempted from obtaining any
NOC/Consent for establishment under
pollution control laws from AP
Pollution Control Board.
25 MUST RUN STATUS - -
All Wind- Solar hybrid power projects
will be treated as “MUST RUN” power
plants and will not be subjected to
‘Merit Order Despatch (MOD)
principles’
26
Round The Clock
Power
- -
For Round The Clock (RTC) power by
Wind-Solar Hybrid projects, at least
51% of the energy requirement should
be from the Renewable Energy
projects (Solar/Wind).

8. 27
Energy Banking
/Energy Accounting
-
If the Consumer does not claim the
renewable attribute of wind/solar for
meeting its Solar/Non-Solar RPO,
energy injection worked out at the
receiving end sub-station of GETCO will
be set-off against the consumption
during the Consumer's billing cycle.
If the consumer claims the renewable
attributes of solar/wind for meeting its
solar/non-solar RPO, then energy
accounting will be based on 15-
minute time block-basis.
In both the cases, surplus power, after
giving set off, will be purchased by
DISCOM at Average Pooled Power
Purchase Cost (APPC) of the year of
commissioning of the project.
Surplus power, after giving set off, will
be purchased by the DISCOM at 85%
of Average Pooled Power Purchase
Cost (APPC) of the year of
commissioning of the project.
Banking of 100% of energy will be
permitted during all 12 months of the
year, based on the feasibility and prior
approval of APTRANSCO/APDISCOMs.
Banking charges will be adjusted in
kind at 5% of the energy delivered at
the point of drawl.
The unutilized banked energy shall be
considered as deemed purchase by
Discoms at 75% of the Average Pooled
Power Purchase Cost as determined by
the APERC for the applicable year.
28
Renewable Power
Purchase Obligation
(RPO)
Fulfilment of solar RPO and non-
solar RPO in the proportion of rated
capacity of solar and wind power in
the hybrid plant respectively.
Fulfilment of RPO by purchasing
wind/solar power at the tariff
determined by GERC or tariff
discovered through competitive
bidding process.
Fulfilment of solar RPO and non-solar
RPO in the proportion of rated capacity
of solar and wind power in the hybrid
plant respectively.

9. 29 Forecasting Schedule -
Forecast will be scheduled for day-to-
day operations, which will be
governed by regulations as passed and
amended by GERC.
Project(s) must give the common
scheduling and forecasting for the
Wind and Solar Project(s) and further
at any point of time should not exceed
the project capacity.
30 Restrictions -
Second hand WTGs/ solar modules or
other equipment shall not be eligible
for installation
-
31
Clean Development
Mechanism
(CDM)Benefit
-
The Clean Development Mechanism
(CDM) benefits will be shared on net
proceeds, starting from 100% to
Developer in the first year after
commissioning, and thereafter
reducing by 10% every year till the
sharing becomes equal (50:50)
between the Developer and the Power
Procurer, in the sixth year.
-
32 Security Deposit
Bank guarantee equivalent to
Rs.2.00 lakhs/ MW in favour of
NREDCAP.
Developer shall be required to provide
Bank Guarantee @ Rs. 3 lacs per MW
to GETCO based on allotment of
transmission capacity
-
33 Liability Charges -
Developer shall commission new
Hybrid capacity at least 10% of the
allotted capacity within 1 month of
charging of evacuation line, failing
which, the Developer shall be liable to
pay long term transmission charges for
10% of allotted capacity till such 10% of
allotted capacity is commissioned.
-
34 Proposal Fees - - Rs. 25,000/MW

10. 35 Allotment Fees - -
Rs.1,50,000/MW shall be paid at the
time of entering into agreement.
36
Project Completion
Timeline
- - 24 months from the date of allotment.