http://hdl.handle.net/2292/2857 2017-07-14T11:13:35Z 2017-07-14T11:13:35Z Harnmeijer, A Lipp, J Wlokas, H Hicks, J Wizelius, T Soerensen, H http://hdl.handle.net/2292/34243 2017-07-14T06:56:25Z 2012-07-01T00:00:00Z

WWEC 2012: A bird's-eye view of community renewable energy across the world Harnmeijer, A; Lipp, J; Wlokas, H; Hicks, J; Wizelius, T; Soerensen, H

2012-07-01T00:00:00Z Harnmeijer, A Bhopal, V Cross, J Harnmeijer, J Palit, D Biswal, P Mahapatra, S http://hdl.handle.net/2292/34242 2017-07-14T06:28:42Z 2015-04-01T00:00:00Z

Urjaa Samadhan : Towards Self-Sustaining Solar Economies in Orissa , India Harnmeijer, A; Bhopal, V; Cross, J; Harnmeijer, J; Palit, D; Biswal, P; Mahapatra, S Urjaa Samadhan is a collaborative project that commenced in April 2014, and aspires to contribute to the resilience of rural off- grid renewable energy ecosystems in Orissa, India. This paper aims to summarise the delivery rather than research aspects. Broadly speaking, Urjaa Samadhan aims to empower communities in Orissa to take control and ownership of renewables infrastructure by leveraging the latent potential of local and regional technical and supply chain capacity. It seeks to do this by facilitating engagement between end-users on the one hand, and relevant ‘providers’ – parts and service suppliers and NGO's – on the other. Specifically, our project seeks to pilot a unified messaging platform service with a web-map interface designed to achieve a step change in end-user – provider engagement in the fledgling off-grid renewables sphere in Orissa. The Urjaa Samadhan Gateway will be designed to facilitate user requests and supplier provision for parts and services, and will accommodate technology- specific system faults and failures for the full range of solar PV technologies currently installed in South and North-East Orissa. The Gateway will be pilotted in Koraput and Mayurbhanj districts in conjunction with a credit scheme and a technical training programme for local parts and service providers. Pending a successful pilot, the potential exists to tailor the gateway for other renewable technologies, and expand functionality beyond the notification of simple technology failure towards financial-, user rated product and service quality-, and waste collection information. Our hope is that Urjaa Samadhan contributes to increasing transparency and reducing information asymmetries and transaction costs that are currently preventing the development of functional rural renewables markets.

2015-04-01T00:00:00Z Harnmeijer, AL http://hdl.handle.net/2292/34241 2017-07-14T06:00:20Z 2015-09-05T00:00:00Z

The state of community energy in the UK: prospects for a civic renewable energy transition Harnmeijer, AL

2015-09-05T00:00:00Z Hernmeijer, AL http://hdl.handle.net/2292/34239 2017-07-14T04:37:20Z 2016-05-20T00:00:00Z

Institutional preconditions for mutuality in clean energy markets Hernmeijer, AL

2016-05-20T00:00:00Z Bujalance, E Cirre, FJ Conder, MDE http://hdl.handle.net/2292/34238 2017-07-14T04:32:52Z 2017-02-01T00:00:00Z

On automorphism groups of Riemann double covers of Klein surfaces Bujalance, E; Cirre, FJ; Conder, MDE If G is a group of automorphisms of a compact Klein surface X, then the direct product G × C2 is a group of automorphisms of the Riemann double cover X+ of X. In this paper we analyse the relationship between G and the full groups of automorphisms Aut(X) and Aut(X+) of X and X+ respectively, in the special case where the group G is uniformised by a non-Euclidean crystallographic group with quadrangular signature (2, 2, 2, n). There is a difference in what happens between bordered surfaces and unbordered non-orientable surfaces, and so we consider those cases separately (including the special situation for n = 4 in the unbordered case).

2017-02-01T00:00:00Z Conder, M Širáň, J http://hdl.handle.net/2292/34236 2017-07-14T04:18:59Z 2016-12-01T00:00:00Z

Orientably-regular maps with given exponent group Conder, M; Širáň, J We prove that for every integer d ≥ 3 and every group U of units mod d, there exists an orientably regular map of valency d with exponent group U.

2016-12-01T00:00:00Z Harnmeijer, J Harnmeijer, AL Bhopal, V Robinson, S Phimister, E Roberts, D Msika, J http://hdl.handle.net/2292/34235 2017-07-14T04:08:50Z 2015-07-01T00:00:00Z

The Comparative Costs of Community and Commercial Renewable Energy Projects in Scotland Harnmeijer, J; Harnmeijer, AL; Bhopal, V; Robinson, S; Phimister, E; Roberts, D; Msika, J The purpose of this study is to identify any differences in the costs faced by community and commercial renewable energy projects in Scotland. The Scottish Government has expressed a commitment to support the development of community renewable energy, including a target to establish 500 megawatts of community and locally-owned renewable energy by 2020. Given this aspiration, it is important to understand any cost barriers faced by community projects that are not faced by equivalent commercial projects. The study compares the costs and cost factors faced throughout the lifecycle of projects under three different ownership categories: commercial, community and commercial-community partnerships. Key findings: Community and commercial renewable energy sectors have evolved separately to some extent and have therefore faced different cost factors. This has resulted in costs that are more variable, with some facing significantly higher costs than others. Costs have become less variable over time and have decreased over the last decade. The aggregate data showed that there is no statistical difference in the costs of more recently developed community owned projects. While communities spend more in the pre-planning stages, this is not generally reflected in overall costs, pre-planning costs typically make up a minor proportion of total development costs (e.g. 50% of capital costs incurred through technology acquisition. Pre-planning barriers represent both costs and risks that may be addressed through policy measures. It is important to note that communities face a much higher risk of failure during this time.

2015-07-01T00:00:00Z Conder, MDE Zhang, W-J http://hdl.handle.net/2292/34234 2017-07-14T03:47:10Z 2017-05-01T00:00:00Z

Abelian covers of chiral polytopes Conder, MDE; Zhang, W-J Abstract polytopes are combinatorial structures with certain properties drawn from the study of geometric structures, like the Platonic solids, and of maps on surfaces. Of particular interest are the polytopes with maximal possible symmetry (subject to certain natural constraints). Symmetry can be measured by the effect of automorphisms on the ‘flags’ of the polytope, which are maximal chains of elements of increasing rank (dimension). An abstract polytope of rank n is said to be chiral if its automorphism group has precisely two orbits on the flags, such that two flags that differ in one element always lie in different orbits. Examples of chiral polytopes have been difficult to find and construct. In this paper, we introduce a new covering method that allows the construction of some infinite families of chiral polytopes, with each member of a family having the same rank as the original, but with the size of the members of the family growing linearly with one (or more) of the parameters making up its ‘type’ (Schläfli symbol). In particular, we use this method to construct several new infinite families of chiral polytopes of ranks 3, 4, 5 and 6.

2017-05-01T00:00:00Z Harnmeijer, AL Harnmeijer, J McEwen, N Bhopal, V http://hdl.handle.net/2292/34229 2017-07-14T02:18:25Z 2012-05-01T00:00:00Z

A report on community renewable energy in Scotland Harnmeijer, AL; Harnmeijer, J; McEwen, N; Bhopal, V

2012-05-01T00:00:00Z Harnmeijer, A Engels, R http://hdl.handle.net/2292/34228 2017-07-14T02:08:01Z 2009-03-01T00:00:00Z

Cookbook for the (sustainable) university: 14 innovations in practice Harnmeijer, A; Engels, R This online booklet was presented at a symposium in The Netherlands called Greening the Ivory Tower in March 2009. It includes a wide range of practical advice from non-governmental organization experts to university staff and students on topics such as student led initiatives, campus climate solutions, curriculum, facility management and administration, and community involvement.

2009-03-01T00:00:00Z