BOOT Model

Currently wide-scale deployment of this solar water heater systems is on newly constructed buildings to comply with municipal norms. The end user is not involved in the selection of such systems because of which solar water heaters are not looked upon as a utility.

A typical floor plan.

Electrical load for such a floor

  Fixture Loads Hrs Wh %
Bedrm1 Lights 100 4 400 5.52
  Fan 80 4 320 4.41
  5 Amp 1000 0.25 250 3.45
  PC/AV 120 2 240 3.31
Toilets Light 25 2 50 0.69
  Geyser 1800 0.5 900 12.41
  5 Amp 1000 0.25 250 3.45
Bedrm2 Lights 100 4 400 5.52
  Fan 80 4 320 4.41
  PC/AV 120 2 240 3.31
Toilets Light 25 2 50 0.69
  Geyser 1800 0.5 900 12.41
Kitchen Exhaust 40 2 80 1.10
  Light 100 4 400 5.52
  Fridge 120 6 720 9.93
  W/M 300 1 300 4.14
  5 Amp 1000 0.25 250 3.45
Living Lights 100 4.5 450 6.21
  Fan 80 3 240 3.31
  TV 150 3 450 6.21
  AV 40 1 40 0.55
TOTAL    (Watt)   7250 100.00

Hot water consumption per household



25 lts @ 60°C + 2 Parts Normal Water = 3 Parts bathing water.

Standard water consumption per person/day = 125 lts.
Drinking Water = 5 lts.
Flushing/Washing = 45 lts.
Balance for bathing = 75 lts.

Assumptions: Occupants 05 per flat with max consumption of 25 ltrs hot water per head
Total hot water consumption per flat : 125 Ltrs per day.
Max temp from solar : 60 Deg C
Input temperature : 20 deg C
Rise of temperature : 40 deg C
Total KCAL required : 125 Ltrs * 40 deg = 5000 Kcal
1KW = 860 Kcal with 80 % efficiency : 688 Kcal
To get 5000 Kcal we have to burn 7.26 units per day
Per unit cost : 1 Kw= Rs 6 , 7.26 *6= Rs.43 per day * 300 days : Rs 12900 PA.

The BOOT model is meant to reach out to existing building owners such as institutions, hotels, hospitals and residential societies. This will enable end users to select international quality solar water heater panels from BOSCH. Our objective is to provide superior technology which makes solar water heater systems an integral part of your utility at no upfront cost. Following  steps explain how this made possible.

4-Step Mechanism

BUILD – Service Provider will consult with the customer and with the help of it’s technology partner own and install solar water heater system at the customer’s site.

OPERATE– Service Provider will be operating the system for the period of engagement. It will be responsible for the general maintenance of the system to ensure delivery of service.

OWN– Service Provider will continue to own the system for the period of engagement unless the customer decides to purchase the system at which time the system will be transferred to the customer at an agreed price.

TRANSFER- At the end of the period of engagement, the ownership of the system will be transferred to the customer at a nominal cost.

Pay For Service
The customer will only have to pay for the services rendered by the system. A minimum quantity of water will supplied to the customer at a specified temperature.

Benefits of going from Compliance to Utility
1. Adoption of latest and greatest in technology with no upfront cost.
2. Monthly payment is comparable or less than cost paid by the customer for heating water using electricity, diesel or Natural Gas.
3. No maintenance hassles, operation of system by trained professionals ensures a good quality service.

Time is right to adopt an ecologically friendly way to save resources for our future generations.


Click here to send us your requirements >