From global to local: a transition. Juliet Davenport

Transcription

1 From global to local: a transition Juliet Davenport

2 Good Energy - who are we?

3 Good Energy - what do we do?

4 Why are renewables important? We need to get over the peak of fossil within the next 5-8 years Figueres and Stern, 2016

5 UK generating capacity the speed of change 120, ,000 80,000 Renewable capacity + 30GW 60,000 40,000 20, Nuclear Coal and oil CCGT Pumped storage Other Hydro Wind Solar Bioenergy Other Renewables

6 UK generating capacity

7 UK home generation capacity In 2000, electricity came from ~1,000 sites, now closer to 1,000,000! Cumula&ve Installa&ons confirmed on FITs at end of March 2016 Photovoltaics Wind Anaerobic digestion Hydro MicroCHP pilot 800, , , , , , , ,000 Number of Installations Apr Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun Aug Oct Dec Feb Largely thanks to solar PV, with 853,387 installations (rooftop solar alone now >1% of UK electricity supply).

8 Changing grid From centralisation 100MW notification 50 MW and below

9 Changing grid to decentralisation majority of solar capacity is below 50MW.

10 Good Energy trading 100% renewable Forecasters predict the difference between our customer demand and our renewable supply and it looks something like this in the Spring. Traders balance the difference between supply and demand over each half hour of the day with the wholesale market.

11 Good Energy pro-sumers The average rooftop solar will generate ~4MWh a year whilst the average household will consume ~4MWh a year Power (kw) :00 01 :00 02 :00 03 :00 04 :00 05 :00 06 :00 07 :00 08 :00 09 :00 10 :00 11 :00 12 :00 13 :00 14 :00 15 :00 16 :00 17 :00 18 :00 19 :00 20 :00 21 :00 22 :00 23 : Solar generanon Solar self-consumpnon Household consumpnon Grid import But solar self-consumption = 25-30%.

12 And where does this leave heat and Transport? Mainly Transport 29% 12% Electricity ResidenNal Business Other 14% Mainly heat

13 Complexities of the market make it difficult to always know which is the best way to go.

14 More predictable renewables Fleet of 6 lagoons could provide 8% of UK power requirement With predictable power, that can provide either baseload or baseload with some flexibility adding this to the current renewable mix would provide some stability to the system.

15 Maximising the value of local generation and domestic demand side response Intelligent battery storage with the inbuilt capability to manage load and balance home loads could provide a simpler demand load for the grid % % % Power (kw) % 40% 20% SOC 0.0 0% :00 01 :00 02 :00 03 :00 04 :00 05 :00 06 :00 07 :00 08 :00 09 :00 10 :00 11 :00 12 :00 13 :00 14 :00 15 :00 16 :00 17 :00 18 :00 19 :00 20 :00 21 :00 22 :00 23 : Solar generanon Solar self-consumpnon Household consumpnon Grid import BaRery SOC (%) The cost of lithium ion batteries has decreased from > $3,000/kWh in 1990 to < $200/ kwh today.

16 Storage for business demand side response Avoiding consuming in red DUoS / Triad periods LV HH Metered - Red Usage LV HH Metered - Amber Usage LV HH Metered - Green Usage

17 Grid scale Storage stacking Ancillary services increase grid resilience

18 Electricity to the transport and heat markets via Hydrogen Around 7% of wind power is constrained off the system in high wind periods. We could see constraint on solar in the future. Power to Gas offers the potential to use which use excess electricity to create hydrogen by electrolysing water. The hydrogen can then: 1. power fuel cell vehicles - provide a range of over 400 miles from one tank, refuel in less than five minutes, and the only emission is water vapour. 2. Be mixed into our gas grid - up to about 5% - without the need to modify boilers, thereby decarbonising the gas.

19 Greater interconnection

20 Reduction of demand All areas of work are improved with an increase of energy efficiency. However, we should not restrict the order of these things. 60% of our recent survey showed that householders increased their energy efficiency measures once they installed solar on their roofs. We should encourage all customers, householders, businesses, government and communities to start a conversation with energy wherever they can

21 Thank you Juliet Davenport