Curtailment payments to wind farm operators in the UK are likely to exceed £80m in 2015 (up from £53m in 2014). In China 15.2% of wind-generated electricity was curtailed in the first half of 2015 (compared to 6.8% for the first half of 2014). This picture is repeated across the world due to grid capacity constraints and provides an opportunity for storage to time-shift the generation.
The Global Wind Energy Council forecasts the cumulative GW of wind generation to increase by 80% from 370GW at the end of 2014 to 666GW by the end of 2019.
Commercial solar in the UK is also facing curtailment and postponed approvals due to grid network constraints. The UK has 8.3GW solar PV installed capacity (source: DECC, October 2015) so is now the 6th largest solar PV generator in the world, behind China (45GW), Germany (40GW), Japan (33GW), US (26GW) and Italy (19GW). The cumulative solar PV installations globally are forecast by Solar Power Europe to more than double from 178GW at end 2014 to 468GW by end 2019.
Infrastructure we see as a clear market for the future rather than now, due to the need for a clear energy storage policy, business models that recognise the value energy storage brings to the grid, a clear and distinct definition of energy storage, standards and protocols to enable grid-connection. To facilitate and influence this we are members of Gridstor, the Renewable Energy Association, Electricity Storage Network and the California Energy Storage Association.
Energy Intensive Industries
“UK factories shut down to avoid high power costs” is the Financial Times headline on 18/2/14. Sheffield Forgemasters, Tata Steel, Celsa Manufacturing and SSI (Sahaviriya Steel Industries) are all mentioned in the FT article as some of 100,000 UK companies in energy intensive industries that take the risk of high electricity prices if they produce during one or more of the 3 annual ‘triad’ periods, in return for lower prices for the rest of the year. Triads are the 3 half-hours with the maximum national electricity demand each year that typically happen Nov-Feb between 16.00 and 19.00, but they are not announced in advance. To avoid being penalised, in some cases by several £m, these and other firms frequently shut down or adjust their production programme.
The above article focuses on the UK, however there is a global opportunity to improve energy management and drive down energy costs for energy intensive industries across the world.
Customer Interest Group
CES has formed a powerful customer interest group to ensure what we design and manufacture is what customers want to purchase. Members include E.ON, National Grid, UKPN, Sheffield Forgemasters, Evalu8, Solar South West, Siemens, Costain, S&C Electric Europe, University of Sheffield, Knowledge Transfer Network. The people within each of these organisations are responsible for energy storage.