Singapore reviewing regulations for energy sources like solar and wind

I think hybrid energy sources may make sense - to supply energy to the houses.

Solar energy is provided by the sun and wind is provided by the nature, wind (backend energy resources are nature – and is free).

Though solar and wind energy are intermittent as it depends on
environmental conditions, it does give a good complement to traditional source of energy – be it fossil or natural gas.

Also if the energy generated by solar and wind has surplus – it can sell back to the national grid – to fund the solar panel cell and the windmill (front end infrastructure).

Overall, this will reduce the cost of energy – nationwide.

Also to ensure reliable supply of energy (instead of solely depending on intermittent energy sources – like solar and wind) – traditional energy source of energy and fossil or natural gas – can kick it to ensure reliability of energy supply without causing disruption of electrical energy to the home.

Most important – the “handover” from intermittent energy source and traditional energy source and vice versa – must be seamless – and must not cause an electrical spike, brownout, surge or electrical blackout – that cause damages to home electrical appliances such as computer, TV, air-con, lighting, fridge, washing machines etc.

Otherwise a central UPS (Uninterruptible Power Supply) (or even backup power generator) need to be implemented in each HDB block to ensure a graceful cutover of power supply from intermittent energy source and traditional energy source and vice versa – to ensure all home appliances will not be impacted by electrical irregularities.

I think the challenging part is the metering of the energy usage – how much is attested to using the traditional energy source, how much is used through solar energy, how much is sell back to National Grid through surplus solar energy sending energy to the National Grid.

Thus a proper metering system and software must be available to accurately meter the energy usage for how much, how long, at what time and this is translated to correct billing.

The billing system must be able to translate the correct energy usage and bill correctly.

I believe a slew of energy meter, energy sensor etc will be required.